mirror of
https://github.com/sqlmapproject/sqlmap.git
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1605 lines
74 KiB
Python
1605 lines
74 KiB
Python
#!/usr/bin/env python
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"""
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Copyright (c) 2006-2020 sqlmap developers (http://sqlmap.org/)
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See the file 'LICENSE' for copying permission
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"""
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import copy
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import logging
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import random
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import re
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import socket
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import subprocess
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import sys
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import time
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from extra.beep.beep import beep
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from lib.core.agent import agent
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from lib.core.common import Backend
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from lib.core.common import dataToStdout
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from lib.core.common import extractRegexResult
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from lib.core.common import extractTextTagContent
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from lib.core.common import filterNone
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from lib.core.common import findDynamicContent
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from lib.core.common import Format
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from lib.core.common import getFilteredPageContent
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from lib.core.common import getLastRequestHTTPError
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from lib.core.common import getPublicTypeMembers
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from lib.core.common import getSafeExString
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from lib.core.common import getSortedInjectionTests
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from lib.core.common import hashDBRetrieve
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from lib.core.common import hashDBWrite
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from lib.core.common import intersect
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from lib.core.common import joinValue
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from lib.core.common import listToStrValue
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from lib.core.common import parseFilePaths
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from lib.core.common import popValue
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from lib.core.common import pushValue
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from lib.core.common import randomInt
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from lib.core.common import randomStr
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from lib.core.common import readInput
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from lib.core.common import showStaticWords
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from lib.core.common import singleTimeLogMessage
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from lib.core.common import singleTimeWarnMessage
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from lib.core.common import unArrayizeValue
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from lib.core.common import wasLastResponseDBMSError
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from lib.core.common import wasLastResponseHTTPError
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from lib.core.compat import xrange
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from lib.core.convert import getBytes
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from lib.core.convert import getUnicode
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from lib.core.data import conf
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from lib.core.data import kb
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from lib.core.data import logger
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from lib.core.datatype import AttribDict
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from lib.core.datatype import InjectionDict
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from lib.core.decorators import stackedmethod
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from lib.core.dicts import FROM_DUMMY_TABLE
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from lib.core.dicts import HEURISTIC_NULL_EVAL
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from lib.core.enums import DBMS
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from lib.core.enums import HASHDB_KEYS
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from lib.core.enums import HEURISTIC_TEST
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from lib.core.enums import HTTP_HEADER
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from lib.core.enums import HTTPMETHOD
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from lib.core.enums import NOTE
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from lib.core.enums import NULLCONNECTION
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from lib.core.enums import PAYLOAD
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from lib.core.enums import PLACE
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from lib.core.enums import REDIRECTION
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from lib.core.enums import WEB_PLATFORM
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from lib.core.exception import SqlmapConnectionException
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from lib.core.exception import SqlmapDataException
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from lib.core.exception import SqlmapNoneDataException
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from lib.core.exception import SqlmapSilentQuitException
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from lib.core.exception import SqlmapSkipTargetException
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from lib.core.exception import SqlmapUserQuitException
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from lib.core.settings import BOUNDED_INJECTION_MARKER
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from lib.core.settings import CANDIDATE_SENTENCE_MIN_LENGTH
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from lib.core.settings import CHECK_INTERNET_ADDRESS
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from lib.core.settings import CHECK_INTERNET_VALUE
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from lib.core.settings import DEFAULT_COOKIE_DELIMITER
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from lib.core.settings import DEFAULT_GET_POST_DELIMITER
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from lib.core.settings import DUMMY_NON_SQLI_CHECK_APPENDIX
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from lib.core.settings import FI_ERROR_REGEX
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from lib.core.settings import FORMAT_EXCEPTION_STRINGS
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from lib.core.settings import HEURISTIC_CHECK_ALPHABET
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from lib.core.settings import INFERENCE_EQUALS_CHAR
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from lib.core.settings import IPS_WAF_CHECK_PAYLOAD
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from lib.core.settings import IPS_WAF_CHECK_RATIO
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from lib.core.settings import IPS_WAF_CHECK_TIMEOUT
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from lib.core.settings import MAX_DIFFLIB_SEQUENCE_LENGTH
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from lib.core.settings import MAX_STABILITY_DELAY
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from lib.core.settings import NON_SQLI_CHECK_PREFIX_SUFFIX_LENGTH
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from lib.core.settings import PRECONNECT_INCOMPATIBLE_SERVERS
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from lib.core.settings import SINGLE_QUOTE_MARKER
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from lib.core.settings import SLEEP_TIME_MARKER
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from lib.core.settings import SUHOSIN_MAX_VALUE_LENGTH
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from lib.core.settings import SUPPORTED_DBMS
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from lib.core.settings import UNICODE_ENCODING
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from lib.core.settings import UPPER_RATIO_BOUND
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from lib.core.settings import URI_HTTP_HEADER
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from lib.core.threads import getCurrentThreadData
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from lib.core.unescaper import unescaper
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from lib.request.connect import Connect as Request
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from lib.request.comparison import comparison
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from lib.request.inject import checkBooleanExpression
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from lib.request.templates import getPageTemplate
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from lib.techniques.union.test import unionTest
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from lib.techniques.union.use import configUnion
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from thirdparty import six
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from thirdparty.six.moves import http_client as _http_client
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def checkSqlInjection(place, parameter, value):
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# Store here the details about boundaries and payload used to
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# successfully inject
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injection = InjectionDict()
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# Localized thread data needed for some methods
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threadData = getCurrentThreadData()
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# Favoring non-string specific boundaries in case of digit-like parameter values
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if value.isdigit():
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kb.cache.intBoundaries = kb.cache.intBoundaries or sorted(copy.deepcopy(conf.boundaries), key=lambda boundary: any(_ in (boundary.prefix or "") or _ in (boundary.suffix or "") for _ in ('"', '\'')))
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boundaries = kb.cache.intBoundaries
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elif value.isalpha():
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kb.cache.alphaBoundaries = kb.cache.alphaBoundaries or sorted(copy.deepcopy(conf.boundaries), key=lambda boundary: not any(_ in (boundary.prefix or "") or _ in (boundary.suffix or "") for _ in ('"', '\'')))
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boundaries = kb.cache.alphaBoundaries
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else:
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boundaries = conf.boundaries
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# Set the flag for SQL injection test mode
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kb.testMode = True
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paramType = conf.method if conf.method not in (None, HTTPMETHOD.GET, HTTPMETHOD.POST) else place
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tests = getSortedInjectionTests()
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seenPayload = set()
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kb.data.setdefault("randomInt", str(randomInt(10)))
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kb.data.setdefault("randomStr", str(randomStr(10)))
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while tests:
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test = tests.pop(0)
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try:
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if kb.endDetection:
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break
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if conf.dbms is None:
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# If the DBMS has not yet been fingerprinted (via simple heuristic check
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# or via DBMS-specific payload) and boolean-based blind has been identified
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# then attempt to identify with a simple DBMS specific boolean-based
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# test what the DBMS may be
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if not injection.dbms and PAYLOAD.TECHNIQUE.BOOLEAN in injection.data:
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if not Backend.getIdentifiedDbms() and kb.heuristicDbms is None and not kb.droppingRequests:
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kb.heuristicDbms = heuristicCheckDbms(injection)
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# If the DBMS has already been fingerprinted (via DBMS-specific
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# error message, simple heuristic check or via DBMS-specific
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# payload), ask the user to limit the tests to the fingerprinted
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# DBMS
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if kb.reduceTests is None and not conf.testFilter and (intersect(Backend.getErrorParsedDBMSes(), SUPPORTED_DBMS, True) or kb.heuristicDbms or injection.dbms):
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msg = "it looks like the back-end DBMS is '%s'. " % (Format.getErrorParsedDBMSes() or kb.heuristicDbms or joinValue(injection.dbms, '/'))
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msg += "Do you want to skip test payloads specific for other DBMSes? [Y/n]"
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kb.reduceTests = (Backend.getErrorParsedDBMSes() or [kb.heuristicDbms]) if readInput(msg, default='Y', boolean=True) else []
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# If the DBMS has been fingerprinted (via DBMS-specific error
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# message, via simple heuristic check or via DBMS-specific
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# payload), ask the user to extend the tests to all DBMS-specific,
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# regardless of --level and --risk values provided
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if kb.extendTests is None and not conf.testFilter and (conf.level < 5 or conf.risk < 3) and (intersect(Backend.getErrorParsedDBMSes(), SUPPORTED_DBMS, True) or kb.heuristicDbms or injection.dbms):
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msg = "for the remaining tests, do you want to include all tests "
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msg += "for '%s' extending provided " % (Format.getErrorParsedDBMSes() or kb.heuristicDbms or joinValue(injection.dbms, '/'))
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msg += "level (%d)" % conf.level if conf.level < 5 else ""
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msg += " and " if conf.level < 5 and conf.risk < 3 else ""
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msg += "risk (%d)" % conf.risk if conf.risk < 3 else ""
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msg += " values? [Y/n]" if conf.level < 5 and conf.risk < 3 else " value? [Y/n]"
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kb.extendTests = (Backend.getErrorParsedDBMSes() or [kb.heuristicDbms]) if readInput(msg, default='Y', boolean=True) else []
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title = test.title
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kb.testType = stype = test.stype
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clause = test.clause
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unionExtended = False
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trueCode, falseCode = None, None
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if conf.httpCollector is not None:
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conf.httpCollector.setExtendedArguments({
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"_title": title,
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"_place": place,
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"_parameter": parameter,
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})
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if stype == PAYLOAD.TECHNIQUE.UNION:
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configUnion(test.request.char)
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if "[CHAR]" in title:
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if conf.uChar is None:
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continue
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else:
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title = title.replace("[CHAR]", conf.uChar)
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elif "[RANDNUM]" in title or "(NULL)" in title:
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title = title.replace("[RANDNUM]", "random number")
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if test.request.columns == "[COLSTART]-[COLSTOP]":
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if conf.uCols is None:
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continue
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else:
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title = title.replace("[COLSTART]", str(conf.uColsStart))
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title = title.replace("[COLSTOP]", str(conf.uColsStop))
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elif conf.uCols is not None:
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debugMsg = "skipping test '%s' because the user " % title
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debugMsg += "provided custom column range %s" % conf.uCols
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logger.debug(debugMsg)
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continue
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match = re.search(r"(\d+)-(\d+)", test.request.columns)
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if match and injection.data:
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lower, upper = int(match.group(1)), int(match.group(2))
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for _ in (lower, upper):
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if _ > 1:
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__ = 2 * (_ - 1) + 1 if _ == lower else 2 * _
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unionExtended = True
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test.request.columns = re.sub(r"\b%d\b" % _, str(__), test.request.columns)
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title = re.sub(r"\b%d\b" % _, str(__), title)
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test.title = re.sub(r"\b%d\b" % _, str(__), test.title)
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# Skip test if the user's wants to test only for a specific
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# technique
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if conf.technique and isinstance(conf.technique, list) and stype not in conf.technique:
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debugMsg = "skipping test '%s' because the user " % title
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debugMsg += "specified to test only for "
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debugMsg += "%s techniques" % " & ".join(PAYLOAD.SQLINJECTION[_] for _ in conf.technique)
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logger.debug(debugMsg)
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continue
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# Skip test if it is the same SQL injection type already
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# identified by another test
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if injection.data and stype in injection.data:
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debugMsg = "skipping test '%s' because " % title
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debugMsg += "the payload for %s has " % PAYLOAD.SQLINJECTION[stype]
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debugMsg += "already been identified"
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logger.debug(debugMsg)
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continue
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# Parse DBMS-specific payloads' details
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if "details" in test and "dbms" in test.details:
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payloadDbms = test.details.dbms
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else:
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payloadDbms = None
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# Skip tests if title, vector or DBMS is not included by the
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# given test filter
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if conf.testFilter and not any(conf.testFilter in str(item) or re.search(conf.testFilter, str(item), re.I) for item in (test.title, test.vector, payloadDbms)):
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debugMsg = "skipping test '%s' because its " % title
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debugMsg += "name/vector/DBMS is not included by the given filter"
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logger.debug(debugMsg)
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continue
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# Skip tests if title, vector or DBMS is included by the
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# given skip filter
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if conf.testSkip and any(conf.testSkip in str(item) or re.search(conf.testSkip, str(item), re.I) for item in (test.title, test.vector, payloadDbms)):
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debugMsg = "skipping test '%s' because its " % title
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debugMsg += "name/vector/DBMS is included by the given skip filter"
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logger.debug(debugMsg)
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continue
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if payloadDbms is not None:
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# Skip DBMS-specific test if it does not match the user's
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# provided DBMS
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if conf.dbms and not intersect(payloadDbms, conf.dbms, True):
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debugMsg = "skipping test '%s' because " % title
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debugMsg += "its declared DBMS is different than provided"
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logger.debug(debugMsg)
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continue
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if kb.dbmsFilter and not intersect(payloadDbms, kb.dbmsFilter, True):
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debugMsg = "skipping test '%s' because " % title
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debugMsg += "its declared DBMS is different than provided"
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logger.debug(debugMsg)
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continue
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# Skip DBMS-specific test if it does not match the
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# previously identified DBMS (via DBMS-specific payload)
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if injection.dbms and not intersect(payloadDbms, injection.dbms, True):
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debugMsg = "skipping test '%s' because " % title
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debugMsg += "its declared DBMS is different than identified"
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logger.debug(debugMsg)
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continue
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# Skip DBMS-specific test if it does not match the
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# previously identified DBMS (via DBMS-specific error message)
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if kb.reduceTests and not intersect(payloadDbms, kb.reduceTests, True):
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debugMsg = "skipping test '%s' because the heuristic " % title
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debugMsg += "tests showed that the back-end DBMS "
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debugMsg += "could be '%s'" % unArrayizeValue(kb.reduceTests)
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logger.debug(debugMsg)
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continue
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# If the user did not decide to extend the tests to all
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# DBMS-specific or the test payloads is not specific to the
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# identified DBMS, then only test for it if both level and risk
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# are below the corrisponding configuration's level and risk
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# values
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if not conf.testFilter and not (kb.extendTests and intersect(payloadDbms, kb.extendTests, True)):
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# Skip test if the risk is higher than the provided (or default)
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# value
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if test.risk > conf.risk:
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debugMsg = "skipping test '%s' because the risk (%d) " % (title, test.risk)
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debugMsg += "is higher than the provided (%d)" % conf.risk
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logger.debug(debugMsg)
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continue
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# Skip test if the level is higher than the provided (or default)
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# value
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if test.level > conf.level:
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debugMsg = "skipping test '%s' because the level (%d) " % (title, test.level)
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debugMsg += "is higher than the provided (%d)" % conf.level
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logger.debug(debugMsg)
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continue
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# Skip test if it does not match the same SQL injection clause
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# already identified by another test
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clauseMatch = False
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for clauseTest in clause:
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if injection.clause is not None and clauseTest in injection.clause:
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clauseMatch = True
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break
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if clause != [0] and injection.clause and injection.clause != [0] and not clauseMatch:
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debugMsg = "skipping test '%s' because the clauses " % title
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debugMsg += "differ from the clause already identified"
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logger.debug(debugMsg)
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continue
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# Skip test if the user provided custom character (for UNION-based payloads)
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if conf.uChar is not None and ("random number" in title or "(NULL)" in title):
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debugMsg = "skipping test '%s' because the user " % title
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debugMsg += "provided a specific character, %s" % conf.uChar
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logger.debug(debugMsg)
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continue
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if stype == PAYLOAD.TECHNIQUE.UNION:
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match = re.search(r"(\d+)-(\d+)", test.request.columns)
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if match and not injection.data:
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_ = test.request.columns.split('-')[-1]
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if conf.uCols is None and _.isdigit():
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if kb.futileUnion is None:
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msg = "it is recommended to perform "
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msg += "only basic UNION tests if there is not "
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msg += "at least one other (potential) "
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msg += "technique found. Do you want to reduce "
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msg += "the number of requests? [Y/n] "
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kb.futileUnion = readInput(msg, default='Y', boolean=True)
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if kb.futileUnion and int(_) > 10:
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debugMsg = "skipping test '%s'" % title
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logger.debug(debugMsg)
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continue
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infoMsg = "testing '%s'" % title
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logger.info(infoMsg)
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# Force back-end DBMS according to the current test DBMS value
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# for proper payload unescaping
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Backend.forceDbms(payloadDbms[0] if isinstance(payloadDbms, list) else payloadDbms)
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# Parse test's <request>
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comment = agent.getComment(test.request) if len(conf.boundaries) > 1 else None
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fstPayload = agent.cleanupPayload(test.request.payload, origValue=value if place not in (PLACE.URI, PLACE.CUSTOM_POST, PLACE.CUSTOM_HEADER) and BOUNDED_INJECTION_MARKER not in (value or "") else None)
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for boundary in boundaries:
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injectable = False
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# Skip boundary if the level is higher than the provided (or
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# default) value
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# Parse boundary's <level>
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if boundary.level > conf.level and not (kb.extendTests and intersect(payloadDbms, kb.extendTests, True)):
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continue
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# Skip boundary if it does not match against test's <clause>
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# Parse test's <clause> and boundary's <clause>
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clauseMatch = False
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for clauseTest in test.clause:
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if clauseTest in boundary.clause:
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clauseMatch = True
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break
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if test.clause != [0] and boundary.clause != [0] and not clauseMatch:
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continue
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# Skip boundary if it does not match against test's <where>
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# Parse test's <where> and boundary's <where>
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whereMatch = False
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for where in test.where:
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if where in boundary.where:
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whereMatch = True
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break
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if not whereMatch:
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continue
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# Parse boundary's <prefix>, <suffix> and <ptype>
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prefix = boundary.prefix if boundary.prefix else ""
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suffix = boundary.suffix if boundary.suffix else ""
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ptype = boundary.ptype
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# Options --prefix/--suffix have a higher priority (if set by user)
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prefix = conf.prefix if conf.prefix is not None else prefix
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suffix = conf.suffix if conf.suffix is not None else suffix
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comment = None if conf.suffix is not None else comment
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# If the previous injections succeeded, we know which prefix,
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# suffix and parameter type to use for further tests, no
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# need to cycle through the boundaries for the following tests
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condBound = (injection.prefix is not None and injection.suffix is not None)
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condBound &= (injection.prefix != prefix or injection.suffix != suffix)
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condType = injection.ptype is not None and injection.ptype != ptype
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# If the payload is an inline query test for it regardless
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# of previously identified injection types
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if stype != PAYLOAD.TECHNIQUE.QUERY and (condBound or condType):
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continue
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# For each test's <where>
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for where in test.where:
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templatePayload = None
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vector = None
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origValue = value
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if kb.customInjectionMark in origValue:
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origValue = origValue.split(kb.customInjectionMark)[0]
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origValue = re.search(r"(\w*)\Z", origValue).group(1)
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# Threat the parameter original value according to the
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# test's <where> tag
|
|
if where == PAYLOAD.WHERE.ORIGINAL or conf.prefix:
|
|
if kb.tamperFunctions:
|
|
templatePayload = agent.payload(place, parameter, value="", newValue=origValue, where=where)
|
|
elif where == PAYLOAD.WHERE.NEGATIVE:
|
|
# Use different page template than the original
|
|
# one as we are changing parameters value, which
|
|
# will likely result in a different content
|
|
|
|
if conf.invalidLogical:
|
|
_ = int(kb.data.randomInt[:2])
|
|
origValue = "%s AND %s LIKE %s" % (origValue, _, _ + 1)
|
|
elif conf.invalidBignum:
|
|
origValue = kb.data.randomInt[:6]
|
|
elif conf.invalidString:
|
|
origValue = kb.data.randomStr[:6]
|
|
else:
|
|
origValue = "-%s" % kb.data.randomInt[:4]
|
|
|
|
templatePayload = agent.payload(place, parameter, value="", newValue=origValue, where=where)
|
|
elif where == PAYLOAD.WHERE.REPLACE:
|
|
origValue = ""
|
|
|
|
kb.pageTemplate, kb.errorIsNone = getPageTemplate(templatePayload, place)
|
|
|
|
# Forge request payload by prepending with boundary's
|
|
# prefix and appending the boundary's suffix to the
|
|
# test's ' <payload><comment> ' string
|
|
if fstPayload:
|
|
boundPayload = agent.prefixQuery(fstPayload, prefix, where, clause)
|
|
boundPayload = agent.suffixQuery(boundPayload, comment, suffix, where)
|
|
reqPayload = agent.payload(place, parameter, newValue=boundPayload, where=where)
|
|
|
|
if reqPayload:
|
|
stripPayload = re.sub(r"(\A|\b|_)([A-Za-z]{4}((?<!LIKE))|\d+)(_|\b|\Z)", r"\g<1>.\g<4>", reqPayload)
|
|
if stripPayload in seenPayload:
|
|
continue
|
|
else:
|
|
seenPayload.add(stripPayload)
|
|
else:
|
|
reqPayload = None
|
|
|
|
# Perform the test's request and check whether or not the
|
|
# payload was successful
|
|
# Parse test's <response>
|
|
for method, check in test.response.items():
|
|
check = agent.cleanupPayload(check, origValue=value if place not in (PLACE.URI, PLACE.CUSTOM_POST, PLACE.CUSTOM_HEADER) and BOUNDED_INJECTION_MARKER not in (value or "") else None)
|
|
|
|
# In case of boolean-based blind SQL injection
|
|
if method == PAYLOAD.METHOD.COMPARISON:
|
|
# Generate payload used for comparison
|
|
def genCmpPayload():
|
|
sndPayload = agent.cleanupPayload(test.response.comparison, origValue=value if place not in (PLACE.URI, PLACE.CUSTOM_POST, PLACE.CUSTOM_HEADER) and BOUNDED_INJECTION_MARKER not in (value or "") else None)
|
|
|
|
# Forge response payload by prepending with
|
|
# boundary's prefix and appending the boundary's
|
|
# suffix to the test's ' <payload><comment> '
|
|
# string
|
|
boundPayload = agent.prefixQuery(sndPayload, prefix, where, clause)
|
|
boundPayload = agent.suffixQuery(boundPayload, comment, suffix, where)
|
|
cmpPayload = agent.payload(place, parameter, newValue=boundPayload, where=where)
|
|
|
|
return cmpPayload
|
|
|
|
# Useful to set kb.matchRatio at first based on False response content
|
|
kb.matchRatio = None
|
|
kb.negativeLogic = (where == PAYLOAD.WHERE.NEGATIVE)
|
|
Request.queryPage(genCmpPayload(), place, raise404=False)
|
|
falsePage, falseHeaders, falseCode = threadData.lastComparisonPage or "", threadData.lastComparisonHeaders, threadData.lastComparisonCode
|
|
falseRawResponse = "%s%s" % (falseHeaders, falsePage)
|
|
|
|
# Checking if there is difference between current FALSE, original and heuristics page (i.e. not used parameter)
|
|
if not any((kb.negativeLogic, conf.string, conf.notString)):
|
|
try:
|
|
ratio = 1.0
|
|
seqMatcher = getCurrentThreadData().seqMatcher
|
|
|
|
for current in (kb.originalPage, kb.heuristicPage):
|
|
seqMatcher.set_seq1(current or "")
|
|
seqMatcher.set_seq2(falsePage or "")
|
|
ratio *= seqMatcher.quick_ratio()
|
|
|
|
if ratio == 1.0:
|
|
continue
|
|
except (MemoryError, OverflowError):
|
|
pass
|
|
|
|
# Perform the test's True request
|
|
trueResult = Request.queryPage(reqPayload, place, raise404=False)
|
|
truePage, trueHeaders, trueCode = threadData.lastComparisonPage or "", threadData.lastComparisonHeaders, threadData.lastComparisonCode
|
|
trueRawResponse = "%s%s" % (trueHeaders, truePage)
|
|
|
|
if trueResult and not(truePage == falsePage and not kb.nullConnection):
|
|
# Perform the test's False request
|
|
falseResult = Request.queryPage(genCmpPayload(), place, raise404=False)
|
|
|
|
if not falseResult:
|
|
if kb.negativeLogic:
|
|
boundPayload = agent.prefixQuery(kb.data.randomStr, prefix, where, clause)
|
|
boundPayload = agent.suffixQuery(boundPayload, comment, suffix, where)
|
|
errorPayload = agent.payload(place, parameter, newValue=boundPayload, where=where)
|
|
|
|
errorResult = Request.queryPage(errorPayload, place, raise404=False)
|
|
if errorResult:
|
|
continue
|
|
elif kb.heuristicPage and not any((conf.string, conf.notString, conf.regexp, conf.code, kb.nullConnection)):
|
|
_ = comparison(kb.heuristicPage, None, getRatioValue=True)
|
|
if (_ or 0) > (kb.matchRatio or 0):
|
|
kb.matchRatio = _
|
|
logger.debug("adjusting match ratio for current parameter to %.3f" % kb.matchRatio)
|
|
|
|
# Reducing false-positive "appears" messages in heavily dynamic environment
|
|
if kb.heavilyDynamic and not Request.queryPage(reqPayload, place, raise404=False):
|
|
continue
|
|
|
|
injectable = True
|
|
|
|
elif (threadData.lastComparisonRatio or 0) > UPPER_RATIO_BOUND and not any((conf.string, conf.notString, conf.regexp, conf.code, kb.nullConnection)):
|
|
originalSet = set(getFilteredPageContent(kb.pageTemplate, True, "\n").split("\n"))
|
|
trueSet = set(getFilteredPageContent(truePage, True, "\n").split("\n"))
|
|
falseSet = set(getFilteredPageContent(falsePage, True, "\n").split("\n"))
|
|
|
|
if threadData.lastErrorPage and threadData.lastErrorPage[1]:
|
|
errorSet = set(getFilteredPageContent(threadData.lastErrorPage[1], True, "\n").split("\n"))
|
|
else:
|
|
errorSet = set()
|
|
|
|
if originalSet == trueSet != falseSet:
|
|
candidates = trueSet - falseSet - errorSet
|
|
|
|
if candidates:
|
|
candidates = sorted(candidates, key=len)
|
|
for candidate in candidates:
|
|
if re.match(r"\A[\w.,! ]+\Z", candidate) and ' ' in candidate and candidate.strip() and len(candidate) > CANDIDATE_SENTENCE_MIN_LENGTH:
|
|
conf.string = candidate
|
|
injectable = True
|
|
|
|
infoMsg = "%sparameter '%s' appears to be '%s' injectable (with --string=\"%s\")" % ("%s " % paramType if paramType != parameter else "", parameter, title, repr(conf.string).lstrip('u').strip("'"))
|
|
logger.info(infoMsg)
|
|
|
|
break
|
|
|
|
if injectable:
|
|
if kb.pageStable and not any((conf.string, conf.notString, conf.regexp, conf.code, kb.nullConnection)):
|
|
if all((falseCode, trueCode)) and falseCode != trueCode:
|
|
conf.code = trueCode
|
|
|
|
infoMsg = "%sparameter '%s' appears to be '%s' injectable (with --code=%d)" % ("%s " % paramType if paramType != parameter else "", parameter, title, conf.code)
|
|
logger.info(infoMsg)
|
|
else:
|
|
trueSet = set(extractTextTagContent(trueRawResponse))
|
|
trueSet |= set(__ for _ in trueSet for __ in _.split())
|
|
|
|
falseSet = set(extractTextTagContent(falseRawResponse))
|
|
falseSet |= set(__ for _ in falseSet for __ in _.split())
|
|
|
|
if threadData.lastErrorPage and threadData.lastErrorPage[1]:
|
|
errorSet = set(extractTextTagContent(threadData.lastErrorPage[1]))
|
|
errorSet |= set(__ for _ in errorSet for __ in _.split())
|
|
else:
|
|
errorSet = set()
|
|
|
|
candidates = filterNone(_.strip() if _.strip() in trueRawResponse and _.strip() not in falseRawResponse else None for _ in (trueSet - falseSet - errorSet))
|
|
|
|
if candidates:
|
|
candidates = sorted(candidates, key=len)
|
|
for candidate in candidates:
|
|
if re.match(r"\A\w{2,}\Z", candidate): # Note: length of 1 (e.g. --string=5) could cause trouble, especially in error message pages with partially reflected payload content
|
|
break
|
|
|
|
conf.string = candidate
|
|
|
|
infoMsg = "%sparameter '%s' appears to be '%s' injectable (with --string=\"%s\")" % ("%s " % paramType if paramType != parameter else "", parameter, title, repr(conf.string).lstrip('u').strip("'"))
|
|
logger.info(infoMsg)
|
|
|
|
if not any((conf.string, conf.notString)):
|
|
candidates = filterNone(_.strip() if _.strip() in falseRawResponse and _.strip() not in trueRawResponse else None for _ in (falseSet - trueSet))
|
|
|
|
if candidates:
|
|
candidates = sorted(candidates, key=len)
|
|
for candidate in candidates:
|
|
if re.match(r"\A\w+\Z", candidate):
|
|
break
|
|
|
|
conf.notString = candidate
|
|
|
|
infoMsg = "%sparameter '%s' appears to be '%s' injectable (with --not-string=\"%s\")" % ("%s " % paramType if paramType != parameter else "", parameter, title, repr(conf.notString).lstrip('u').strip("'"))
|
|
logger.info(infoMsg)
|
|
|
|
if not any((conf.string, conf.notString, conf.code)):
|
|
infoMsg = "%sparameter '%s' appears to be '%s' injectable " % ("%s " % paramType if paramType != parameter else "", parameter, title)
|
|
singleTimeLogMessage(infoMsg)
|
|
|
|
# In case of error-based SQL injection
|
|
elif method == PAYLOAD.METHOD.GREP:
|
|
# Perform the test's request and grep the response
|
|
# body for the test's <grep> regular expression
|
|
try:
|
|
page, headers, _ = Request.queryPage(reqPayload, place, content=True, raise404=False)
|
|
output = extractRegexResult(check, page, re.DOTALL | re.IGNORECASE)
|
|
output = output or extractRegexResult(check, threadData.lastHTTPError[2] if wasLastResponseHTTPError() else None, re.DOTALL | re.IGNORECASE)
|
|
output = output or extractRegexResult(check, listToStrValue((headers[key] for key in headers if key.lower() != URI_HTTP_HEADER.lower()) if headers else None), re.DOTALL | re.IGNORECASE)
|
|
output = output or extractRegexResult(check, threadData.lastRedirectMsg[1] if threadData.lastRedirectMsg and threadData.lastRedirectMsg[0] == threadData.lastRequestUID else None, re.DOTALL | re.IGNORECASE)
|
|
|
|
if output:
|
|
result = output == "1"
|
|
|
|
if result:
|
|
infoMsg = "%sparameter '%s' is '%s' injectable " % ("%s " % paramType if paramType != parameter else "", parameter, title)
|
|
logger.info(infoMsg)
|
|
|
|
injectable = True
|
|
|
|
except SqlmapConnectionException as ex:
|
|
debugMsg = "problem occurred most likely because the "
|
|
debugMsg += "server hasn't recovered as expected from the "
|
|
debugMsg += "error-based payload used ('%s')" % getSafeExString(ex)
|
|
logger.debug(debugMsg)
|
|
|
|
# In case of time-based blind or stacked queries
|
|
# SQL injections
|
|
elif method == PAYLOAD.METHOD.TIME:
|
|
# Perform the test's request
|
|
trueResult = Request.queryPage(reqPayload, place, timeBasedCompare=True, raise404=False)
|
|
trueCode = threadData.lastCode
|
|
|
|
if trueResult:
|
|
# Extra validation step (e.g. to check for DROP protection mechanisms)
|
|
if SLEEP_TIME_MARKER in reqPayload:
|
|
falseResult = Request.queryPage(reqPayload.replace(SLEEP_TIME_MARKER, "0"), place, timeBasedCompare=True, raise404=False)
|
|
if falseResult:
|
|
continue
|
|
|
|
# Confirm test's results
|
|
trueResult = Request.queryPage(reqPayload, place, timeBasedCompare=True, raise404=False)
|
|
|
|
if trueResult:
|
|
infoMsg = "%sparameter '%s' appears to be '%s' injectable " % ("%s " % paramType if paramType != parameter else "", parameter, title)
|
|
logger.info(infoMsg)
|
|
|
|
injectable = True
|
|
|
|
# In case of UNION query SQL injection
|
|
elif method == PAYLOAD.METHOD.UNION:
|
|
# Test for UNION injection and set the sample
|
|
# payload as well as the vector.
|
|
# NOTE: vector is set to a tuple with 6 elements,
|
|
# used afterwards by Agent.forgeUnionQuery()
|
|
# method to forge the UNION query payload
|
|
|
|
configUnion(test.request.char, test.request.columns)
|
|
|
|
if len(kb.dbmsFilter or []) == 1:
|
|
Backend.forceDbms(kb.dbmsFilter[0])
|
|
elif not Backend.getIdentifiedDbms():
|
|
if kb.heuristicDbms is None:
|
|
if kb.heuristicTest == HEURISTIC_TEST.POSITIVE or injection.data:
|
|
warnMsg = "using unescaped version of the test "
|
|
warnMsg += "because of zero knowledge of the "
|
|
warnMsg += "back-end DBMS. You can try to "
|
|
warnMsg += "explicitly set it with option '--dbms'"
|
|
singleTimeWarnMessage(warnMsg)
|
|
else:
|
|
Backend.forceDbms(kb.heuristicDbms)
|
|
|
|
if unionExtended:
|
|
infoMsg = "automatically extending ranges for UNION "
|
|
infoMsg += "query injection technique tests as "
|
|
infoMsg += "there is at least one other (potential) "
|
|
infoMsg += "technique found"
|
|
singleTimeLogMessage(infoMsg)
|
|
|
|
# Test for UNION query SQL injection
|
|
reqPayload, vector = unionTest(comment, place, parameter, value, prefix, suffix)
|
|
|
|
if isinstance(reqPayload, six.string_types):
|
|
infoMsg = "%sparameter '%s' is '%s' injectable" % ("%s " % paramType if paramType != parameter else "", parameter, title)
|
|
logger.info(infoMsg)
|
|
|
|
injectable = True
|
|
|
|
# Overwrite 'where' because it can be set
|
|
# by unionTest() directly
|
|
where = vector[6]
|
|
|
|
kb.previousMethod = method
|
|
|
|
if conf.offline:
|
|
injectable = False
|
|
|
|
# If the injection test was successful feed the injection
|
|
# object with the test's details
|
|
if injectable is True:
|
|
# Feed with the boundaries details only the first time a
|
|
# test has been successful
|
|
if injection.place is None or injection.parameter is None:
|
|
if place in (PLACE.USER_AGENT, PLACE.REFERER, PLACE.HOST):
|
|
injection.parameter = place
|
|
else:
|
|
injection.parameter = parameter
|
|
|
|
injection.place = place
|
|
injection.ptype = ptype
|
|
injection.prefix = prefix
|
|
injection.suffix = suffix
|
|
injection.clause = clause
|
|
|
|
# Feed with test details every time a test is successful
|
|
if hasattr(test, "details"):
|
|
for key, value in test.details.items():
|
|
if key == "dbms":
|
|
injection.dbms = value
|
|
|
|
if not isinstance(value, list):
|
|
Backend.setDbms(value)
|
|
else:
|
|
Backend.forceDbms(value[0], True)
|
|
|
|
elif key == "dbms_version" and injection.dbms_version is None and not conf.testFilter:
|
|
injection.dbms_version = Backend.setVersion(value)
|
|
|
|
elif key == "os" and injection.os is None:
|
|
injection.os = Backend.setOs(value)
|
|
|
|
if vector is None and "vector" in test and test.vector is not None:
|
|
vector = test.vector
|
|
|
|
injection.data[stype] = AttribDict()
|
|
injection.data[stype].title = title
|
|
injection.data[stype].payload = agent.removePayloadDelimiters(reqPayload)
|
|
injection.data[stype].where = where
|
|
injection.data[stype].vector = vector
|
|
injection.data[stype].comment = comment
|
|
injection.data[stype].templatePayload = templatePayload
|
|
injection.data[stype].matchRatio = kb.matchRatio
|
|
injection.data[stype].trueCode = trueCode
|
|
injection.data[stype].falseCode = falseCode
|
|
|
|
injection.conf.textOnly = conf.textOnly
|
|
injection.conf.titles = conf.titles
|
|
injection.conf.code = conf.code
|
|
injection.conf.string = conf.string
|
|
injection.conf.notString = conf.notString
|
|
injection.conf.regexp = conf.regexp
|
|
injection.conf.optimize = conf.optimize
|
|
|
|
if not kb.alerted:
|
|
if conf.beep:
|
|
beep()
|
|
|
|
if conf.alert:
|
|
infoMsg = "executing alerting shell command(s) ('%s')" % conf.alert
|
|
logger.info(infoMsg)
|
|
|
|
try:
|
|
process = subprocess.Popen(getBytes(conf.alert, sys.getfilesystemencoding() or UNICODE_ENCODING), shell=True)
|
|
process.wait()
|
|
except Exception as ex:
|
|
errMsg = "error occurred while executing '%s' ('%s')" % (conf.alert, getSafeExString(ex))
|
|
logger.error(errMsg)
|
|
|
|
kb.alerted = True
|
|
|
|
# There is no need to perform this test for other
|
|
# <where> tags
|
|
break
|
|
|
|
if injectable is True:
|
|
kb.vulnHosts.add(conf.hostname)
|
|
break
|
|
|
|
# Reset forced back-end DBMS value
|
|
Backend.flushForcedDbms()
|
|
|
|
except KeyboardInterrupt:
|
|
warnMsg = "user aborted during detection phase"
|
|
logger.warn(warnMsg)
|
|
|
|
if conf.multipleTargets:
|
|
msg = "how do you want to proceed? [ne(X)t target/(s)kip current test/(e)nd detection phase/(n)ext parameter/(c)hange verbosity/(q)uit]"
|
|
choice = readInput(msg, default='X', checkBatch=False).upper()
|
|
else:
|
|
msg = "how do you want to proceed? [(S)kip current test/(e)nd detection phase/(n)ext parameter/(c)hange verbosity/(q)uit]"
|
|
choice = readInput(msg, default='S', checkBatch=False).upper()
|
|
|
|
if choice == 'X':
|
|
if conf.multipleTargets:
|
|
raise SqlmapSkipTargetException
|
|
elif choice == 'C':
|
|
choice = None
|
|
while not ((choice or "").isdigit() and 0 <= int(choice) <= 6):
|
|
if choice:
|
|
logger.warn("invalid value")
|
|
msg = "enter new verbosity level: [0-6] "
|
|
choice = readInput(msg, default=str(conf.verbose), checkBatch=False)
|
|
conf.verbose = int(choice)
|
|
setVerbosity()
|
|
tests.insert(0, test)
|
|
elif choice == 'N':
|
|
return None
|
|
elif choice == 'E':
|
|
kb.endDetection = True
|
|
elif choice == 'Q':
|
|
raise SqlmapUserQuitException
|
|
|
|
finally:
|
|
# Reset forced back-end DBMS value
|
|
Backend.flushForcedDbms()
|
|
|
|
Backend.flushForcedDbms(True)
|
|
|
|
# Return the injection object
|
|
if injection.place is not None and injection.parameter is not None:
|
|
if not conf.dropSetCookie and PAYLOAD.TECHNIQUE.BOOLEAN in injection.data and injection.data[PAYLOAD.TECHNIQUE.BOOLEAN].vector.startswith('OR'):
|
|
warnMsg = "in OR boolean-based injection cases, please consider usage "
|
|
warnMsg += "of switch '--drop-set-cookie' if you experience any "
|
|
warnMsg += "problems during data retrieval"
|
|
logger.warn(warnMsg)
|
|
|
|
if not checkFalsePositives(injection):
|
|
kb.vulnHosts.remove(conf.hostname)
|
|
if NOTE.FALSE_POSITIVE_OR_UNEXPLOITABLE not in injection.notes:
|
|
injection.notes.append(NOTE.FALSE_POSITIVE_OR_UNEXPLOITABLE)
|
|
|
|
else:
|
|
injection = None
|
|
|
|
if injection and NOTE.FALSE_POSITIVE_OR_UNEXPLOITABLE not in injection.notes:
|
|
checkSuhosinPatch(injection)
|
|
checkFilteredChars(injection)
|
|
|
|
return injection
|
|
|
|
@stackedmethod
|
|
def heuristicCheckDbms(injection):
|
|
"""
|
|
This functions is called when boolean-based blind is identified with a
|
|
generic payload and the DBMS has not yet been fingerprinted to attempt
|
|
to identify with a simple DBMS specific boolean-based test what the DBMS
|
|
may be
|
|
"""
|
|
retVal = False
|
|
|
|
pushValue(kb.injection)
|
|
kb.injection = injection
|
|
|
|
for dbms in getPublicTypeMembers(DBMS, True):
|
|
randStr1, randStr2 = randomStr(), randomStr()
|
|
|
|
Backend.forceDbms(dbms)
|
|
|
|
if dbms in HEURISTIC_NULL_EVAL:
|
|
result = checkBooleanExpression("(SELECT %s%s) IS NULL" % (HEURISTIC_NULL_EVAL[dbms], FROM_DUMMY_TABLE.get(dbms, "")))
|
|
elif not ((randStr1 in unescaper.escape("'%s'" % randStr1)) and list(FROM_DUMMY_TABLE.values()).count(FROM_DUMMY_TABLE.get(dbms, "")) != 1):
|
|
result = checkBooleanExpression("(SELECT '%s'%s)=%s%s%s" % (randStr1, FROM_DUMMY_TABLE.get(dbms, ""), SINGLE_QUOTE_MARKER, randStr1, SINGLE_QUOTE_MARKER))
|
|
else:
|
|
result = False
|
|
|
|
if result:
|
|
if not checkBooleanExpression("(SELECT '%s'%s)=%s%s%s" % (randStr1, FROM_DUMMY_TABLE.get(dbms, ""), SINGLE_QUOTE_MARKER, randStr2, SINGLE_QUOTE_MARKER)):
|
|
retVal = dbms
|
|
break
|
|
|
|
Backend.flushForcedDbms()
|
|
kb.injection = popValue()
|
|
|
|
if retVal:
|
|
infoMsg = "heuristic (extended) test shows that the back-end DBMS " # Not as important as "parsing" counter-part (because of false-positives)
|
|
infoMsg += "could be '%s' " % retVal
|
|
logger.info(infoMsg)
|
|
|
|
kb.heuristicExtendedDbms = retVal
|
|
|
|
return retVal
|
|
|
|
@stackedmethod
|
|
def checkFalsePositives(injection):
|
|
"""
|
|
Checks for false positives (only in single special cases)
|
|
"""
|
|
|
|
retVal = True
|
|
|
|
if all(_ in (PAYLOAD.TECHNIQUE.BOOLEAN, PAYLOAD.TECHNIQUE.TIME, PAYLOAD.TECHNIQUE.STACKED) for _ in injection.data) or (len(injection.data) == 1 and PAYLOAD.TECHNIQUE.UNION in injection.data and "Generic" in injection.data[PAYLOAD.TECHNIQUE.UNION].title):
|
|
pushValue(kb.injection)
|
|
|
|
infoMsg = "checking if the injection point on %s " % injection.place
|
|
infoMsg += "parameter '%s' is a false positive" % injection.parameter
|
|
logger.info(infoMsg)
|
|
|
|
def _():
|
|
return int(randomInt(2)) + 1
|
|
|
|
kb.injection = injection
|
|
|
|
for level in xrange(conf.level):
|
|
while True:
|
|
randInt1, randInt2, randInt3 = (_() for j in xrange(3))
|
|
|
|
randInt1 = min(randInt1, randInt2, randInt3)
|
|
randInt3 = max(randInt1, randInt2, randInt3)
|
|
|
|
if conf.string and any(conf.string in getUnicode(_) for _ in (randInt1, randInt2, randInt3)):
|
|
continue
|
|
|
|
if conf.notString and any(conf.notString in getUnicode(_) for _ in (randInt1, randInt2, randInt3)):
|
|
continue
|
|
|
|
if randInt3 > randInt2 > randInt1:
|
|
break
|
|
|
|
if not checkBooleanExpression("%d%s%d" % (randInt1, INFERENCE_EQUALS_CHAR, randInt1)):
|
|
retVal = False
|
|
break
|
|
|
|
if PAYLOAD.TECHNIQUE.BOOLEAN not in injection.data:
|
|
checkBooleanExpression("%d%s%d" % (randInt1, INFERENCE_EQUALS_CHAR, randInt2)) # just in case if DBMS hasn't properly recovered from previous delayed request
|
|
|
|
if checkBooleanExpression("%d%s%d" % (randInt1, INFERENCE_EQUALS_CHAR, randInt3)): # this must not be evaluated to True
|
|
retVal = False
|
|
break
|
|
|
|
elif checkBooleanExpression("%d%s%d" % (randInt3, INFERENCE_EQUALS_CHAR, randInt2)): # this must not be evaluated to True
|
|
retVal = False
|
|
break
|
|
|
|
elif not checkBooleanExpression("%d%s%d" % (randInt2, INFERENCE_EQUALS_CHAR, randInt2)): # this must be evaluated to True
|
|
retVal = False
|
|
break
|
|
|
|
elif checkBooleanExpression("%d %d" % (randInt3, randInt2)): # this must not be evaluated to True (invalid statement)
|
|
retVal = False
|
|
break
|
|
|
|
if not retVal:
|
|
warnMsg = "false positive or unexploitable injection point detected"
|
|
logger.warn(warnMsg)
|
|
|
|
kb.injection = popValue()
|
|
|
|
return retVal
|
|
|
|
@stackedmethod
|
|
def checkSuhosinPatch(injection):
|
|
"""
|
|
Checks for existence of Suhosin-patch (and alike) protection mechanism(s)
|
|
"""
|
|
|
|
if injection.place == PLACE.GET:
|
|
debugMsg = "checking for parameter length "
|
|
debugMsg += "constraining mechanisms"
|
|
logger.debug(debugMsg)
|
|
|
|
pushValue(kb.injection)
|
|
|
|
kb.injection = injection
|
|
randInt = randomInt()
|
|
|
|
if not checkBooleanExpression("%d=%s%d" % (randInt, ' ' * SUHOSIN_MAX_VALUE_LENGTH, randInt)):
|
|
warnMsg = "parameter length constraining "
|
|
warnMsg += "mechanism detected (e.g. Suhosin patch). "
|
|
warnMsg += "Potential problems in enumeration phase can be expected"
|
|
logger.warn(warnMsg)
|
|
|
|
kb.injection = popValue()
|
|
|
|
@stackedmethod
|
|
def checkFilteredChars(injection):
|
|
debugMsg = "checking for filtered characters"
|
|
logger.debug(debugMsg)
|
|
|
|
pushValue(kb.injection)
|
|
|
|
kb.injection = injection
|
|
randInt = randomInt()
|
|
|
|
# all other techniques are already using parentheses in tests
|
|
if len(injection.data) == 1 and PAYLOAD.TECHNIQUE.BOOLEAN in injection.data:
|
|
if not checkBooleanExpression("(%d)=%d" % (randInt, randInt)):
|
|
warnMsg = "it appears that some non-alphanumeric characters (i.e. ()) are "
|
|
warnMsg += "filtered by the back-end server. There is a strong "
|
|
warnMsg += "possibility that sqlmap won't be able to properly "
|
|
warnMsg += "exploit this vulnerability"
|
|
logger.warn(warnMsg)
|
|
|
|
# inference techniques depend on character '>'
|
|
if not any(_ in injection.data for _ in (PAYLOAD.TECHNIQUE.ERROR, PAYLOAD.TECHNIQUE.UNION, PAYLOAD.TECHNIQUE.QUERY)):
|
|
if not checkBooleanExpression("%d>%d" % (randInt + 1, randInt)):
|
|
warnMsg = "it appears that the character '>' is "
|
|
warnMsg += "filtered by the back-end server. You are strongly "
|
|
warnMsg += "advised to rerun with the '--tamper=between'"
|
|
logger.warn(warnMsg)
|
|
|
|
kb.injection = popValue()
|
|
|
|
def heuristicCheckSqlInjection(place, parameter):
|
|
if kb.heavilyDynamic:
|
|
debugMsg = "heuristic check skipped because of heavy dynamicity"
|
|
logger.debug(debugMsg)
|
|
return None
|
|
|
|
origValue = conf.paramDict[place][parameter]
|
|
paramType = conf.method if conf.method not in (None, HTTPMETHOD.GET, HTTPMETHOD.POST) else place
|
|
|
|
prefix = ""
|
|
suffix = ""
|
|
randStr = ""
|
|
|
|
if conf.prefix or conf.suffix:
|
|
if conf.prefix:
|
|
prefix = conf.prefix
|
|
|
|
if conf.suffix:
|
|
suffix = conf.suffix
|
|
|
|
while randStr.count('\'') != 1 or randStr.count('\"') != 1:
|
|
randStr = randomStr(length=10, alphabet=HEURISTIC_CHECK_ALPHABET)
|
|
|
|
kb.heuristicMode = True
|
|
|
|
payload = "%s%s%s" % (prefix, randStr, suffix)
|
|
payload = agent.payload(place, parameter, newValue=payload)
|
|
page, _, _ = Request.queryPage(payload, place, content=True, raise404=False)
|
|
|
|
kb.heuristicPage = page
|
|
kb.heuristicMode = False
|
|
|
|
parseFilePaths(page)
|
|
result = wasLastResponseDBMSError()
|
|
|
|
infoMsg = "heuristic (basic) test shows that %sparameter '%s' might " % ("%s " % paramType if paramType != parameter else "", parameter)
|
|
|
|
def _(page):
|
|
return any(_ in (page or "") for _ in FORMAT_EXCEPTION_STRINGS)
|
|
|
|
casting = _(page) and not _(kb.originalPage)
|
|
|
|
if not casting and not result and kb.dynamicParameter and origValue.isdigit():
|
|
randInt = int(randomInt())
|
|
payload = "%s%s%s" % (prefix, "%d-%d" % (int(origValue) + randInt, randInt), suffix)
|
|
payload = agent.payload(place, parameter, newValue=payload, where=PAYLOAD.WHERE.REPLACE)
|
|
result = Request.queryPage(payload, place, raise404=False)
|
|
|
|
if not result:
|
|
randStr = randomStr()
|
|
payload = "%s%s%s" % (prefix, "%s.%d%s" % (origValue, random.randint(1, 9), randStr), suffix)
|
|
payload = agent.payload(place, parameter, newValue=payload, where=PAYLOAD.WHERE.REPLACE)
|
|
casting = Request.queryPage(payload, place, raise404=False)
|
|
|
|
kb.heuristicTest = HEURISTIC_TEST.CASTED if casting else HEURISTIC_TEST.NEGATIVE if not result else HEURISTIC_TEST.POSITIVE
|
|
|
|
if casting:
|
|
errMsg = "possible %s casting detected (e.g. '" % ("integer" if origValue.isdigit() else "type")
|
|
|
|
platform = conf.url.split('.')[-1].lower()
|
|
if platform == WEB_PLATFORM.ASP:
|
|
errMsg += "%s=CInt(request.querystring(\"%s\"))" % (parameter, parameter)
|
|
elif platform == WEB_PLATFORM.ASPX:
|
|
errMsg += "int.TryParse(Request.QueryString[\"%s\"], out %s)" % (parameter, parameter)
|
|
elif platform == WEB_PLATFORM.JSP:
|
|
errMsg += "%s=Integer.parseInt(request.getParameter(\"%s\"))" % (parameter, parameter)
|
|
else:
|
|
errMsg += "$%s=intval($_REQUEST[\"%s\"])" % (parameter, parameter)
|
|
|
|
errMsg += "') at the back-end web application"
|
|
logger.error(errMsg)
|
|
|
|
if kb.ignoreCasted is None:
|
|
message = "do you want to skip those kind of cases (and save scanning time)? %s " % ("[Y/n]" if conf.multipleTargets else "[y/N]")
|
|
kb.ignoreCasted = readInput(message, default='Y' if conf.multipleTargets else 'N', boolean=True)
|
|
|
|
elif result:
|
|
infoMsg += "be injectable"
|
|
if Backend.getErrorParsedDBMSes():
|
|
infoMsg += " (possible DBMS: '%s')" % Format.getErrorParsedDBMSes()
|
|
logger.info(infoMsg)
|
|
|
|
else:
|
|
infoMsg += "not be injectable"
|
|
logger.warn(infoMsg)
|
|
|
|
kb.heuristicMode = True
|
|
kb.disableHtmlDecoding = True
|
|
|
|
randStr1, randStr2 = randomStr(NON_SQLI_CHECK_PREFIX_SUFFIX_LENGTH), randomStr(NON_SQLI_CHECK_PREFIX_SUFFIX_LENGTH)
|
|
value = "%s%s%s" % (randStr1, DUMMY_NON_SQLI_CHECK_APPENDIX, randStr2)
|
|
payload = "%s%s%s" % (prefix, "'%s" % value, suffix)
|
|
payload = agent.payload(place, parameter, newValue=payload)
|
|
page, _, _ = Request.queryPage(payload, place, content=True, raise404=False)
|
|
|
|
paramType = conf.method if conf.method not in (None, HTTPMETHOD.GET, HTTPMETHOD.POST) else place
|
|
|
|
if value.lower() in (page or "").lower():
|
|
infoMsg = "heuristic (XSS) test shows that %sparameter '%s' might be vulnerable to cross-site scripting (XSS) attacks" % ("%s " % paramType if paramType != parameter else "", parameter)
|
|
logger.info(infoMsg)
|
|
|
|
for match in re.finditer(FI_ERROR_REGEX, page or ""):
|
|
if randStr1.lower() in match.group(0).lower():
|
|
infoMsg = "heuristic (FI) test shows that %sparameter '%s' might be vulnerable to file inclusion (FI) attacks" % ("%s " % paramType if paramType != parameter else "", parameter)
|
|
logger.info(infoMsg)
|
|
break
|
|
|
|
kb.disableHtmlDecoding = False
|
|
kb.heuristicMode = False
|
|
|
|
return kb.heuristicTest
|
|
|
|
def checkDynParam(place, parameter, value):
|
|
"""
|
|
This function checks if the URL parameter is dynamic. If it is
|
|
dynamic, the content of the page differs, otherwise the
|
|
dynamicity might depend on another parameter.
|
|
"""
|
|
|
|
if kb.redirectChoice:
|
|
return None
|
|
|
|
kb.matchRatio = None
|
|
dynResult = None
|
|
randInt = randomInt()
|
|
|
|
paramType = conf.method if conf.method not in (None, HTTPMETHOD.GET, HTTPMETHOD.POST) else place
|
|
|
|
infoMsg = "testing if %sparameter '%s' is dynamic" % ("%s " % paramType if paramType != parameter else "", parameter)
|
|
logger.info(infoMsg)
|
|
|
|
try:
|
|
payload = agent.payload(place, parameter, value, getUnicode(randInt))
|
|
dynResult = Request.queryPage(payload, place, raise404=False)
|
|
except SqlmapConnectionException:
|
|
pass
|
|
|
|
result = None if dynResult is None else not dynResult
|
|
kb.dynamicParameter = result
|
|
|
|
return result
|
|
|
|
def checkDynamicContent(firstPage, secondPage):
|
|
"""
|
|
This function checks for the dynamic content in the provided pages
|
|
"""
|
|
|
|
if kb.nullConnection:
|
|
debugMsg = "dynamic content checking skipped "
|
|
debugMsg += "because NULL connection used"
|
|
logger.debug(debugMsg)
|
|
return
|
|
|
|
if any(page is None for page in (firstPage, secondPage)):
|
|
warnMsg = "can't check dynamic content "
|
|
warnMsg += "because of lack of page content"
|
|
logger.critical(warnMsg)
|
|
return
|
|
|
|
if firstPage and secondPage and any(len(_) > MAX_DIFFLIB_SEQUENCE_LENGTH for _ in (firstPage, secondPage)):
|
|
ratio = None
|
|
else:
|
|
try:
|
|
seqMatcher = getCurrentThreadData().seqMatcher
|
|
seqMatcher.set_seq1(firstPage)
|
|
seqMatcher.set_seq2(secondPage)
|
|
ratio = seqMatcher.quick_ratio()
|
|
except MemoryError:
|
|
ratio = None
|
|
|
|
if ratio is None:
|
|
kb.skipSeqMatcher = True
|
|
|
|
# In case of an intolerable difference turn on dynamicity removal engine
|
|
elif ratio <= UPPER_RATIO_BOUND:
|
|
findDynamicContent(firstPage, secondPage)
|
|
|
|
count = 0
|
|
while not Request.queryPage():
|
|
count += 1
|
|
|
|
if count > conf.retries:
|
|
warnMsg = "target URL content appears to be too dynamic. "
|
|
warnMsg += "Switching to '--text-only' "
|
|
logger.warn(warnMsg)
|
|
|
|
conf.textOnly = True
|
|
return
|
|
|
|
warnMsg = "target URL content appears to be heavily dynamic. "
|
|
warnMsg += "sqlmap is going to retry the request(s)"
|
|
singleTimeLogMessage(warnMsg, logging.CRITICAL)
|
|
|
|
kb.heavilyDynamic = True
|
|
|
|
secondPage, _, _ = Request.queryPage(content=True)
|
|
findDynamicContent(firstPage, secondPage)
|
|
|
|
def checkStability():
|
|
"""
|
|
This function checks if the URL content is stable requesting the
|
|
same page two times with a small delay within each request to
|
|
assume that it is stable.
|
|
|
|
In case the content of the page differs when requesting
|
|
the same page, the dynamicity might depend on other parameters,
|
|
like for instance string matching (--string).
|
|
"""
|
|
|
|
infoMsg = "testing if the target URL content is stable"
|
|
logger.info(infoMsg)
|
|
|
|
firstPage = kb.originalPage # set inside checkConnection()
|
|
|
|
delay = MAX_STABILITY_DELAY - (time.time() - (kb.originalPageTime or 0))
|
|
delay = max(0, min(MAX_STABILITY_DELAY, delay))
|
|
time.sleep(delay)
|
|
|
|
secondPage, _, _ = Request.queryPage(content=True, noteResponseTime=False, raise404=False)
|
|
|
|
if kb.redirectChoice:
|
|
return None
|
|
|
|
kb.pageStable = (firstPage == secondPage)
|
|
|
|
if kb.pageStable:
|
|
if firstPage:
|
|
infoMsg = "target URL content is stable"
|
|
logger.info(infoMsg)
|
|
else:
|
|
errMsg = "there was an error checking the stability of page "
|
|
errMsg += "because of lack of content. Please check the "
|
|
errMsg += "page request results (and probable errors) by "
|
|
errMsg += "using higher verbosity levels"
|
|
logger.error(errMsg)
|
|
|
|
else:
|
|
warnMsg = "target URL content is not stable (i.e. content differs). sqlmap will base the page "
|
|
warnMsg += "comparison on a sequence matcher. If no dynamic nor "
|
|
warnMsg += "injectable parameters are detected, or in case of "
|
|
warnMsg += "junk results, refer to user's manual paragraph "
|
|
warnMsg += "'Page comparison'"
|
|
logger.warn(warnMsg)
|
|
|
|
message = "how do you want to proceed? [(C)ontinue/(s)tring/(r)egex/(q)uit] "
|
|
choice = readInput(message, default='C').upper()
|
|
|
|
if choice == 'Q':
|
|
raise SqlmapUserQuitException
|
|
|
|
elif choice == 'S':
|
|
showStaticWords(firstPage, secondPage)
|
|
|
|
message = "please enter value for parameter 'string': "
|
|
string = readInput(message)
|
|
|
|
if string:
|
|
conf.string = string
|
|
|
|
if kb.nullConnection:
|
|
debugMsg = "turning off NULL connection "
|
|
debugMsg += "support because of string checking"
|
|
logger.debug(debugMsg)
|
|
|
|
kb.nullConnection = None
|
|
else:
|
|
errMsg = "Empty value supplied"
|
|
raise SqlmapNoneDataException(errMsg)
|
|
|
|
elif choice == 'R':
|
|
message = "please enter value for parameter 'regex': "
|
|
regex = readInput(message)
|
|
|
|
if regex:
|
|
conf.regex = regex
|
|
|
|
if kb.nullConnection:
|
|
debugMsg = "turning off NULL connection "
|
|
debugMsg += "support because of regex checking"
|
|
logger.debug(debugMsg)
|
|
|
|
kb.nullConnection = None
|
|
else:
|
|
errMsg = "Empty value supplied"
|
|
raise SqlmapNoneDataException(errMsg)
|
|
|
|
else:
|
|
checkDynamicContent(firstPage, secondPage)
|
|
|
|
return kb.pageStable
|
|
|
|
def checkString():
|
|
if not conf.string:
|
|
return True
|
|
|
|
infoMsg = "testing if the provided string is within the "
|
|
infoMsg += "target URL page content"
|
|
logger.info(infoMsg)
|
|
|
|
page, headers, _ = Request.queryPage(content=True)
|
|
rawResponse = "%s%s" % (listToStrValue(headers.headers if headers else ""), page)
|
|
|
|
if conf.string not in rawResponse:
|
|
warnMsg = "you provided '%s' as the string to " % conf.string
|
|
warnMsg += "match, but such a string is not within the target "
|
|
warnMsg += "URL raw response, sqlmap will carry on anyway"
|
|
logger.warn(warnMsg)
|
|
|
|
return True
|
|
|
|
def checkRegexp():
|
|
if not conf.regexp:
|
|
return True
|
|
|
|
infoMsg = "testing if the provided regular expression matches within "
|
|
infoMsg += "the target URL page content"
|
|
logger.info(infoMsg)
|
|
|
|
page, headers, _ = Request.queryPage(content=True)
|
|
rawResponse = "%s%s" % (listToStrValue(headers.headers if headers else ""), page)
|
|
|
|
if not re.search(conf.regexp, rawResponse, re.I | re.M):
|
|
warnMsg = "you provided '%s' as the regular expression " % conf.regexp
|
|
warnMsg += "which does not have any match within the target URL raw response. sqlmap "
|
|
warnMsg += "will carry on anyway"
|
|
logger.warn(warnMsg)
|
|
|
|
return True
|
|
|
|
@stackedmethod
|
|
def checkWaf():
|
|
"""
|
|
Reference: http://seclists.org/nmap-dev/2011/q2/att-1005/http-waf-detect.nse
|
|
"""
|
|
|
|
if any((conf.string, conf.notString, conf.regexp, conf.dummy, conf.offline, conf.skipWaf)):
|
|
return None
|
|
|
|
if kb.originalCode == _http_client.NOT_FOUND:
|
|
return None
|
|
|
|
_ = hashDBRetrieve(HASHDB_KEYS.CHECK_WAF_RESULT, True)
|
|
if _ is not None:
|
|
if _:
|
|
warnMsg = "previous heuristics detected that the target "
|
|
warnMsg += "is protected by some kind of WAF/IPS"
|
|
logger.critical(warnMsg)
|
|
return _
|
|
|
|
if not kb.originalPage:
|
|
return None
|
|
|
|
infoMsg = "checking if the target is protected by "
|
|
infoMsg += "some kind of WAF/IPS"
|
|
logger.info(infoMsg)
|
|
|
|
retVal = False
|
|
payload = "%d %s" % (randomInt(), IPS_WAF_CHECK_PAYLOAD)
|
|
|
|
if PLACE.URI in conf.parameters:
|
|
place = PLACE.POST
|
|
value = "%s=%s" % (randomStr(), agent.addPayloadDelimiters(payload))
|
|
else:
|
|
place = PLACE.GET
|
|
value = "" if not conf.parameters.get(PLACE.GET) else conf.parameters[PLACE.GET] + DEFAULT_GET_POST_DELIMITER
|
|
value += "%s=%s" % (randomStr(), agent.addPayloadDelimiters(payload))
|
|
|
|
pushValue(kb.redirectChoice)
|
|
pushValue(kb.resendPostOnRedirect)
|
|
pushValue(conf.timeout)
|
|
|
|
kb.redirectChoice = REDIRECTION.YES
|
|
kb.resendPostOnRedirect = False
|
|
conf.timeout = IPS_WAF_CHECK_TIMEOUT
|
|
|
|
try:
|
|
retVal = (Request.queryPage(place=place, value=value, getRatioValue=True, noteResponseTime=False, silent=True, raise404=False, disableTampering=True)[1] or 0) < IPS_WAF_CHECK_RATIO
|
|
except SqlmapConnectionException:
|
|
retVal = True
|
|
finally:
|
|
kb.matchRatio = None
|
|
|
|
conf.timeout = popValue()
|
|
kb.resendPostOnRedirect = popValue()
|
|
kb.redirectChoice = popValue()
|
|
|
|
hashDBWrite(HASHDB_KEYS.CHECK_WAF_RESULT, retVal, True)
|
|
|
|
if retVal:
|
|
if not kb.identifiedWafs:
|
|
warnMsg = "heuristics detected that the target "
|
|
warnMsg += "is protected by some kind of WAF/IPS"
|
|
logger.critical(warnMsg)
|
|
|
|
message = "are you sure that you want to "
|
|
message += "continue with further target testing? [Y/n] "
|
|
choice = readInput(message, default='Y', boolean=True)
|
|
|
|
if not choice:
|
|
raise SqlmapUserQuitException
|
|
else:
|
|
if not conf.tamper:
|
|
warnMsg = "please consider usage of tamper scripts (option '--tamper')"
|
|
singleTimeWarnMessage(warnMsg)
|
|
|
|
return retVal
|
|
|
|
@stackedmethod
|
|
def checkNullConnection():
|
|
"""
|
|
Reference: http://www.wisec.it/sectou.php?id=472f952d79293
|
|
"""
|
|
|
|
if conf.data:
|
|
return False
|
|
|
|
_ = hashDBRetrieve(HASHDB_KEYS.CHECK_NULL_CONNECTION_RESULT, True)
|
|
if _ is not None:
|
|
kb.nullConnection = _
|
|
|
|
if _:
|
|
dbgMsg = "resuming NULL connection method '%s'" % _
|
|
logger.debug(dbgMsg)
|
|
|
|
else:
|
|
infoMsg = "testing NULL connection to the target URL"
|
|
logger.info(infoMsg)
|
|
|
|
pushValue(kb.pageCompress)
|
|
kb.pageCompress = False
|
|
|
|
try:
|
|
page, headers, _ = Request.getPage(method=HTTPMETHOD.HEAD, raise404=False)
|
|
|
|
if not page and HTTP_HEADER.CONTENT_LENGTH in (headers or {}):
|
|
kb.nullConnection = NULLCONNECTION.HEAD
|
|
|
|
infoMsg = "NULL connection is supported with HEAD method ('Content-Length')"
|
|
logger.info(infoMsg)
|
|
else:
|
|
page, headers, _ = Request.getPage(auxHeaders={HTTP_HEADER.RANGE: "bytes=-1"})
|
|
|
|
if page and len(page) == 1 and HTTP_HEADER.CONTENT_RANGE in (headers or {}):
|
|
kb.nullConnection = NULLCONNECTION.RANGE
|
|
|
|
infoMsg = "NULL connection is supported with GET method ('Range')"
|
|
logger.info(infoMsg)
|
|
else:
|
|
_, headers, _ = Request.getPage(skipRead=True)
|
|
|
|
if HTTP_HEADER.CONTENT_LENGTH in (headers or {}):
|
|
kb.nullConnection = NULLCONNECTION.SKIP_READ
|
|
|
|
infoMsg = "NULL connection is supported with 'skip-read' method"
|
|
logger.info(infoMsg)
|
|
|
|
except SqlmapConnectionException:
|
|
pass
|
|
|
|
finally:
|
|
kb.pageCompress = popValue()
|
|
kb.nullConnection = False if kb.nullConnection is None else kb.nullConnection
|
|
hashDBWrite(HASHDB_KEYS.CHECK_NULL_CONNECTION_RESULT, kb.nullConnection, True)
|
|
|
|
return kb.nullConnection in getPublicTypeMembers(NULLCONNECTION, True)
|
|
|
|
def checkConnection(suppressOutput=False):
|
|
threadData = getCurrentThreadData()
|
|
|
|
if not re.search(r"\A\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\Z", conf.hostname):
|
|
if not any((conf.proxy, conf.tor, conf.dummy, conf.offline)):
|
|
try:
|
|
debugMsg = "resolving hostname '%s'" % conf.hostname
|
|
logger.debug(debugMsg)
|
|
socket.getaddrinfo(conf.hostname, None)
|
|
except socket.gaierror:
|
|
errMsg = "host '%s' does not exist" % conf.hostname
|
|
raise SqlmapConnectionException(errMsg)
|
|
except socket.error as ex:
|
|
errMsg = "problem occurred while "
|
|
errMsg += "resolving a host name '%s' ('%s')" % (conf.hostname, getSafeExString(ex))
|
|
raise SqlmapConnectionException(errMsg)
|
|
except UnicodeError as ex:
|
|
errMsg = "problem occurred while "
|
|
errMsg += "handling a host name '%s' ('%s')" % (conf.hostname, getSafeExString(ex))
|
|
raise SqlmapDataException(errMsg)
|
|
|
|
if not suppressOutput and not conf.dummy and not conf.offline:
|
|
infoMsg = "testing connection to the target URL"
|
|
logger.info(infoMsg)
|
|
|
|
try:
|
|
kb.originalPageTime = time.time()
|
|
Request.queryPage(content=True, noteResponseTime=False)
|
|
|
|
kb.errorIsNone = False
|
|
|
|
if any(_ in (kb.serverHeader or "") for _ in PRECONNECT_INCOMPATIBLE_SERVERS):
|
|
singleTimeWarnMessage("turning off pre-connect mechanism because of incompatible server ('%s')" % kb.serverHeader)
|
|
conf.disablePrecon = True
|
|
|
|
if not kb.originalPage and wasLastResponseHTTPError():
|
|
if getLastRequestHTTPError() not in (conf.ignoreCode or []):
|
|
errMsg = "unable to retrieve page content"
|
|
raise SqlmapConnectionException(errMsg)
|
|
elif wasLastResponseDBMSError():
|
|
warnMsg = "there is a DBMS error found in the HTTP response body "
|
|
warnMsg += "which could interfere with the results of the tests"
|
|
logger.warn(warnMsg)
|
|
elif wasLastResponseHTTPError():
|
|
if getLastRequestHTTPError() not in (conf.ignoreCode or []):
|
|
warnMsg = "the web server responded with an HTTP error code (%d) " % getLastRequestHTTPError()
|
|
warnMsg += "which could interfere with the results of the tests"
|
|
logger.warn(warnMsg)
|
|
else:
|
|
kb.errorIsNone = True
|
|
|
|
if kb.redirectChoice == REDIRECTION.YES and threadData.lastRedirectURL and threadData.lastRedirectURL[0] == threadData.lastRequestUID:
|
|
if (threadData.lastRedirectURL[1] or "").startswith("https://") and conf.hostname in getUnicode(threadData.lastRedirectURL[1]):
|
|
conf.url = re.sub(r"https?://", "https://", conf.url)
|
|
match = re.search(r":(\d+)", threadData.lastRedirectURL[1])
|
|
port = match.group(1) if match else 443
|
|
conf.url = re.sub(r":\d+(/|\Z)", r":%s\g<1>" % port, conf.url)
|
|
|
|
except SqlmapConnectionException as ex:
|
|
if conf.ipv6:
|
|
warnMsg = "check connection to a provided "
|
|
warnMsg += "IPv6 address with a tool like ping6 "
|
|
warnMsg += "(e.g. 'ping6 -I eth0 %s') " % conf.hostname
|
|
warnMsg += "prior to running sqlmap to avoid "
|
|
warnMsg += "any addressing issues"
|
|
singleTimeWarnMessage(warnMsg)
|
|
|
|
if any(code in kb.httpErrorCodes for code in (_http_client.NOT_FOUND, )):
|
|
errMsg = getSafeExString(ex)
|
|
logger.critical(errMsg)
|
|
|
|
if conf.multipleTargets:
|
|
return False
|
|
|
|
msg = "it is not recommended to continue in this kind of cases. Do you want to quit and make sure that everything is set up properly? [Y/n] "
|
|
if readInput(msg, default='Y', boolean=True):
|
|
raise SqlmapSilentQuitException
|
|
else:
|
|
kb.ignoreNotFound = True
|
|
else:
|
|
raise
|
|
finally:
|
|
kb.originalPage = kb.pageTemplate = threadData.lastPage
|
|
kb.originalCode = threadData.lastCode
|
|
|
|
if conf.cj and not conf.cookie and not conf.dropSetCookie:
|
|
candidate = DEFAULT_COOKIE_DELIMITER.join("%s=%s" % (_.name, _.value) for _ in conf.cj)
|
|
|
|
message = "you have not declared cookie(s), while "
|
|
message += "server wants to set its own ('%s'). " % re.sub(r"(=[^=;]{10}[^=;])[^=;]+([^=;]{10})", r"\g<1>...\g<2>", candidate)
|
|
message += "Do you want to use those [Y/n] "
|
|
if readInput(message, default='Y', boolean=True):
|
|
kb.mergeCookies = True
|
|
conf.httpHeaders.append((HTTP_HEADER.COOKIE, candidate))
|
|
|
|
return True
|
|
|
|
def checkInternet():
|
|
content = Request.getPage(url=CHECK_INTERNET_ADDRESS, checking=True)[0]
|
|
result = CHECK_INTERNET_VALUE in (content or "")
|
|
if not result and conf.nonInteractive:
|
|
dataToStdout(repr(content))
|
|
return result
|
|
|
|
def setVerbosity(): # Cross-referenced function
|
|
raise NotImplementedError
|