#!/usr/bin/env python """ Copyright (c) 2006-2020 sqlmap developers (http://sqlmap.org/) See the file 'LICENSE' for copying permission """ import copy import logging import random import re import socket import subprocess import sys import time from extra.beep.beep import beep from lib.core.agent import agent from lib.core.common import Backend from lib.core.common import extractRegexResult from lib.core.common import extractTextTagContent from lib.core.common import filterNone from lib.core.common import findDynamicContent from lib.core.common import Format from lib.core.common import getFilteredPageContent from lib.core.common import getLastRequestHTTPError from lib.core.common import getPublicTypeMembers from lib.core.common import getSafeExString from lib.core.common import getSortedInjectionTests from lib.core.common import hashDBRetrieve from lib.core.common import hashDBWrite from lib.core.common import intersect from lib.core.common import isDigit from lib.core.common import joinValue from lib.core.common import listToStrValue from lib.core.common import parseFilePaths from lib.core.common import popValue from lib.core.common import pushValue from lib.core.common import randomInt from lib.core.common import randomStr from lib.core.common import readInput from lib.core.common import showStaticWords from lib.core.common import singleTimeLogMessage from lib.core.common import singleTimeWarnMessage from lib.core.common import unArrayizeValue from lib.core.common import wasLastResponseDBMSError from lib.core.common import wasLastResponseHTTPError from lib.core.compat import xrange from lib.core.convert import getBytes from lib.core.convert import getUnicode from lib.core.data import conf from lib.core.data import kb from lib.core.data import logger from lib.core.datatype import AttribDict from lib.core.datatype import InjectionDict from lib.core.decorators import stackedmethod from lib.core.dicts import FROM_DUMMY_TABLE from lib.core.dicts import HEURISTIC_NULL_EVAL from lib.core.enums import DBMS from lib.core.enums import HASHDB_KEYS from lib.core.enums import HEURISTIC_TEST from lib.core.enums import HTTP_HEADER from lib.core.enums import HTTPMETHOD from lib.core.enums import NOTE from lib.core.enums import NULLCONNECTION from lib.core.enums import PAYLOAD from lib.core.enums import PLACE from lib.core.enums import REDIRECTION from lib.core.enums import WEB_PLATFORM from lib.core.exception import SqlmapConnectionException from lib.core.exception import SqlmapDataException from lib.core.exception import SqlmapNoneDataException from lib.core.exception import SqlmapSilentQuitException from lib.core.exception import SqlmapSkipTargetException from lib.core.exception import SqlmapUserQuitException from lib.core.settings import BOUNDED_INJECTION_MARKER from lib.core.settings import CANDIDATE_SENTENCE_MIN_LENGTH from lib.core.settings import CHECK_INTERNET_ADDRESS from lib.core.settings import CHECK_INTERNET_VALUE from lib.core.settings import DEFAULT_COOKIE_DELIMITER from lib.core.settings import DEFAULT_GET_POST_DELIMITER from lib.core.settings import DUMMY_NON_SQLI_CHECK_APPENDIX from lib.core.settings import FI_ERROR_REGEX from lib.core.settings import FORMAT_EXCEPTION_STRINGS from lib.core.settings import HEURISTIC_CHECK_ALPHABET from lib.core.settings import INFERENCE_EQUALS_CHAR from lib.core.settings import IPS_WAF_CHECK_PAYLOAD from lib.core.settings import IPS_WAF_CHECK_RATIO from lib.core.settings import IPS_WAF_CHECK_TIMEOUT from lib.core.settings import MAX_DIFFLIB_SEQUENCE_LENGTH from lib.core.settings import MAX_STABILITY_DELAY from lib.core.settings import NON_SQLI_CHECK_PREFIX_SUFFIX_LENGTH from lib.core.settings import PRECONNECT_INCOMPATIBLE_SERVERS from lib.core.settings import SINGLE_QUOTE_MARKER from lib.core.settings import SLEEP_TIME_MARKER from lib.core.settings import SUHOSIN_MAX_VALUE_LENGTH from lib.core.settings import SUPPORTED_DBMS from lib.core.settings import UNICODE_ENCODING from lib.core.settings import UPPER_RATIO_BOUND from lib.core.settings import URI_HTTP_HEADER from lib.core.threads import getCurrentThreadData from lib.core.unescaper import unescaper from lib.request.connect import Connect as Request from lib.request.comparison import comparison from lib.request.inject import checkBooleanExpression from lib.request.templates import getPageTemplate from lib.techniques.union.test import unionTest from lib.techniques.union.use import configUnion from thirdparty import six from thirdparty.six.moves import http_client as _http_client def checkSqlInjection(place, parameter, value): # Store here the details about boundaries and payload used to # successfully inject injection = InjectionDict() # Localized thread data needed for some methods threadData = getCurrentThreadData() # Favoring non-string specific boundaries in case of digit-like parameter values if isDigit(value): 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 ('"', '\''))) boundaries = kb.cache.intBoundaries elif value.isalpha(): 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 ('"', '\''))) boundaries = kb.cache.alphaBoundaries else: boundaries = conf.boundaries # Set the flag for SQL injection test mode kb.testMode = True paramType = conf.method if conf.method not in (None, HTTPMETHOD.GET, HTTPMETHOD.POST) else place tests = getSortedInjectionTests() seenPayload = set() kb.data.setdefault("randomInt", str(randomInt(10))) kb.data.setdefault("randomStr", str(randomStr(10))) while tests: test = tests.pop(0) try: if kb.endDetection: break if conf.dbms is None: # If the DBMS has not yet been fingerprinted (via simple heuristic check # or via DBMS-specific payload) and boolean-based blind has been identified # then attempt to identify with a simple DBMS specific boolean-based # test what the DBMS may be if not injection.dbms and PAYLOAD.TECHNIQUE.BOOLEAN in injection.data: if not Backend.getIdentifiedDbms() and kb.heuristicDbms is None and not kb.droppingRequests: kb.heuristicDbms = heuristicCheckDbms(injection) # If the DBMS has already been fingerprinted (via DBMS-specific # error message, simple heuristic check or via DBMS-specific # payload), ask the user to limit the tests to the fingerprinted # DBMS if kb.reduceTests is None and not conf.testFilter and (intersect(Backend.getErrorParsedDBMSes(), SUPPORTED_DBMS, True) or kb.heuristicDbms or injection.dbms): msg = "it looks like the back-end DBMS is '%s'. " % (Format.getErrorParsedDBMSes() or kb.heuristicDbms or joinValue(injection.dbms, '/')) msg += "Do you want to skip test payloads specific for other DBMSes? [Y/n]" kb.reduceTests = (Backend.getErrorParsedDBMSes() or [kb.heuristicDbms]) if readInput(msg, default='Y', boolean=True) else [] # If the DBMS has been fingerprinted (via DBMS-specific error # message, via simple heuristic check or via DBMS-specific # payload), ask the user to extend the tests to all DBMS-specific, # regardless of --level and --risk values provided 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): msg = "for the remaining tests, do you want to include all tests " msg += "for '%s' extending provided " % (Format.getErrorParsedDBMSes() or kb.heuristicDbms or joinValue(injection.dbms, '/')) msg += "level (%d)" % conf.level if conf.level < 5 else "" msg += " and " if conf.level < 5 and conf.risk < 3 else "" msg += "risk (%d)" % conf.risk if conf.risk < 3 else "" msg += " values? [Y/n]" if conf.level < 5 and conf.risk < 3 else " value? [Y/n]" kb.extendTests = (Backend.getErrorParsedDBMSes() or [kb.heuristicDbms]) if readInput(msg, default='Y', boolean=True) else [] title = test.title kb.testType = stype = test.stype clause = test.clause unionExtended = False trueCode, falseCode = None, None if conf.httpCollector is not None: conf.httpCollector.setExtendedArguments({ "_title": title, "_place": place, "_parameter": parameter, }) if stype == PAYLOAD.TECHNIQUE.UNION: configUnion(test.request.char) if "[CHAR]" in title: if conf.uChar is None: continue else: title = title.replace("[CHAR]", conf.uChar) elif "[RANDNUM]" in title or "(NULL)" in title: title = title.replace("[RANDNUM]", "random number") if test.request.columns == "[COLSTART]-[COLSTOP]": if conf.uCols is None: continue else: title = title.replace("[COLSTART]", str(conf.uColsStart)) title = title.replace("[COLSTOP]", str(conf.uColsStop)) elif conf.uCols is not None: debugMsg = "skipping test '%s' because the user " % title debugMsg += "provided custom column range %s" % conf.uCols logger.debug(debugMsg) continue match = re.search(r"(\d+)-(\d+)", test.request.columns) if match and injection.data: lower, upper = int(match.group(1)), int(match.group(2)) for _ in (lower, upper): if _ > 1: __ = 2 * (_ - 1) + 1 if _ == lower else 2 * _ unionExtended = True test.request.columns = re.sub(r"\b%d\b" % _, str(__), test.request.columns) title = re.sub(r"\b%d\b" % _, str(__), title) test.title = re.sub(r"\b%d\b" % _, str(__), test.title) # Skip test if the user's wants to test only for a specific # technique if conf.technique and isinstance(conf.technique, list) and stype not in conf.technique: debugMsg = "skipping test '%s' because user " % title debugMsg += "specified testing of only " debugMsg += "%s techniques" % " & ".join(PAYLOAD.SQLINJECTION[_] for _ in conf.technique) logger.debug(debugMsg) continue # Skip test if it is the same SQL injection type already # identified by another test if injection.data and stype in injection.data: debugMsg = "skipping test '%s' because " % title debugMsg += "the payload for %s has " % PAYLOAD.SQLINJECTION[stype] debugMsg += "already been identified" logger.debug(debugMsg) continue # Parse DBMS-specific payloads' details if "details" in test and "dbms" in test.details: payloadDbms = test.details.dbms else: payloadDbms = None # Skip tests if title, vector or DBMS is not included by the # given test filter 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)): debugMsg = "skipping test '%s' because its " % title debugMsg += "name/vector/DBMS is not included by the given filter" logger.debug(debugMsg) continue # Skip tests if title, vector or DBMS is included by the # given skip filter 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)): debugMsg = "skipping test '%s' because its " % title debugMsg += "name/vector/DBMS is included by the given skip filter" logger.debug(debugMsg) continue if payloadDbms is not None: # Skip DBMS-specific test if it does not match the user's # provided DBMS if conf.dbms and not intersect(payloadDbms, conf.dbms, True): debugMsg = "skipping test '%s' because " % title debugMsg += "its declared DBMS is different than provided" logger.debug(debugMsg) continue if kb.dbmsFilter and not intersect(payloadDbms, kb.dbmsFilter, True): debugMsg = "skipping test '%s' because " % title debugMsg += "its declared DBMS is different than provided" logger.debug(debugMsg) continue # Skip DBMS-specific test if it does not match the # previously identified DBMS (via DBMS-specific payload) if injection.dbms and not intersect(payloadDbms, injection.dbms, True): debugMsg = "skipping test '%s' because " % title debugMsg += "its declared DBMS is different than identified" logger.debug(debugMsg) continue # Skip DBMS-specific test if it does not match the # previously identified DBMS (via DBMS-specific error message) if kb.reduceTests and not intersect(payloadDbms, kb.reduceTests, True): debugMsg = "skipping test '%s' because the heuristic " % title debugMsg += "tests showed that the back-end DBMS " debugMsg += "could be '%s'" % unArrayizeValue(kb.reduceTests) logger.debug(debugMsg) continue # If the user did not decide to extend the tests to all # DBMS-specific or the test payloads is not specific to the # identified DBMS, then only test for it if both level and risk # are below the corrisponding configuration's level and risk # values if not conf.testFilter and not (kb.extendTests and intersect(payloadDbms, kb.extendTests, True)): # Skip test if the risk is higher than the provided (or default) # value if test.risk > conf.risk: debugMsg = "skipping test '%s' because the risk (%d) " % (title, test.risk) debugMsg += "is higher than the provided (%d)" % conf.risk logger.debug(debugMsg) continue # Skip test if the level is higher than the provided (or default) # value if test.level > conf.level: debugMsg = "skipping test '%s' because the level (%d) " % (title, test.level) debugMsg += "is higher than the provided (%d)" % conf.level logger.debug(debugMsg) continue # Skip test if it does not match the same SQL injection clause # already identified by another test clauseMatch = False for clauseTest in clause: if injection.clause is not None and clauseTest in injection.clause: clauseMatch = True break if clause != [0] and injection.clause and injection.clause != [0] and not clauseMatch: debugMsg = "skipping test '%s' because the clauses " % title debugMsg += "differ from the clause already identified" logger.debug(debugMsg) continue # Skip test if the user provided custom character (for UNION-based payloads) if conf.uChar is not None and ("random number" in title or "(NULL)" in title): debugMsg = "skipping test '%s' because the user " % title debugMsg += "provided a specific character, %s" % conf.uChar logger.debug(debugMsg) continue if stype == PAYLOAD.TECHNIQUE.UNION: match = re.search(r"(\d+)-(\d+)", test.request.columns) if match and not injection.data: _ = test.request.columns.split('-')[-1] if conf.uCols is None and _.isdigit(): if kb.futileUnion is None: msg = "it is recommended to perform " msg += "only basic UNION tests if there is not " msg += "at least one other (potential) " msg += "technique found. Do you want to reduce " msg += "the number of requests? [Y/n] " kb.futileUnion = readInput(msg, default='Y', boolean=True) if kb.futileUnion and int(_) > 10: debugMsg = "skipping test '%s'" % title logger.debug(debugMsg) continue infoMsg = "testing '%s'" % title logger.info(infoMsg) # Force back-end DBMS according to the current test DBMS value # for proper payload unescaping Backend.forceDbms(payloadDbms[0] if isinstance(payloadDbms, list) else payloadDbms) # Parse test's comment = agent.getComment(test.request) if len(conf.boundaries) > 1 else None 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) for boundary in boundaries: injectable = False # Skip boundary if the level is higher than the provided (or # default) value # Parse boundary's if boundary.level > conf.level and not (kb.extendTests and intersect(payloadDbms, kb.extendTests, True)): continue # Skip boundary if it does not match against test's # Parse test's and boundary's clauseMatch = False for clauseTest in test.clause: if clauseTest in boundary.clause: clauseMatch = True break if test.clause != [0] and boundary.clause != [0] and not clauseMatch: continue # Skip boundary if it does not match against test's # Parse test's and boundary's whereMatch = False for where in test.where: if where in boundary.where: whereMatch = True break if not whereMatch: continue # Parse boundary's , and prefix = boundary.prefix if boundary.prefix else "" suffix = boundary.suffix if boundary.suffix else "" ptype = boundary.ptype # Options --prefix/--suffix have a higher priority (if set by user) prefix = conf.prefix if conf.prefix is not None else prefix suffix = conf.suffix if conf.suffix is not None else suffix comment = None if conf.suffix is not None else comment # If the previous injections succeeded, we know which prefix, # suffix and parameter type to use for further tests, no # need to cycle through the boundaries for the following tests condBound = (injection.prefix is not None and injection.suffix is not None) condBound &= (injection.prefix != prefix or injection.suffix != suffix) condType = injection.ptype is not None and injection.ptype != ptype # If the payload is an inline query test for it regardless # of previously identified injection types if stype != PAYLOAD.TECHNIQUE.QUERY and (condBound or condType): continue # For each test's for where in test.where: templatePayload = None vector = None origValue = value if kb.customInjectionMark in origValue: origValue = origValue.split(kb.customInjectionMark)[0] origValue = re.search(r"(\w*)\Z", origValue).group(1) # Threat the parameter original value according to the # test's 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 ' ' 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}((?.\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 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 ' ' # 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) suggestion = None 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: suggestion = 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: suggestion = 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 suggestion = 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 suggestion = 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 suggestion: 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 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 += "used error-based payload ('%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 # 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): if conf.hostname in kb.vulnHosts: 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 if conf.skipHeuristics: return retVal 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 conf.skipHeuristics: return None 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 any(_[0] == HTTP_HEADER.COOKIE for _ in conf.httpHeaders) 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] return CHECK_INTERNET_VALUE in (content or "") def setVerbosity(): # Cross-referenced function raise NotImplementedError