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implemented checkFalsePositives method (simple Turing like tests)

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This commit is contained in:
Miroslav Stampar 2011-04-22 12:24:16 +00:00
parent 7df954dd9f
commit 304500a2e8
1 changed files with 41 additions and 0 deletions
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41
lib/controller/checks.py
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@ -59,6 +59,7 @@ from lib.core.settings import LOWER_RATIO_BOUND
from lib.core.settings import UPPER_RATIO_BOUND
from lib.core.threads import getCurrentThreadData
from lib.request.connect import Connect as Request
from lib.request.inject import checkBooleanExpression
from lib.request.templates import getPageTemplate
from lib.techniques.inband.union.test import unionTest
from lib.techniques.inband.union.use import configUnion
@ -485,10 +486,50 @@ def checkSqlInjection(place, parameter, value):
# Return the injection object
if injection.place is not None and injection.parameter is not None:
injection = checkFalsePositives(injection)
return injection
else:
return None
def checkFalsePositives(injection):
"""
Checks for false positives
"""
retVal = injection
if len(injection.data) == 1 and any(map(lambda x: x in injection.data, [PAYLOAD.TECHNIQUE.BOOLEAN, PAYLOAD.TECHNIQUE.TIME, PAYLOAD.TECHNIQUE.STACKED])):
pushValue(kb.injection)
infoMsg = "testing if an injection point on %s parameter " % injection.place
infoMsg += "'%s' is a false positive" % injection.parameter
logger.info(infoMsg)
kb.injection = injection
randInt1, randInt2 = int(randomInt(2)) + 1, int(randomInt(2)) + 1
# just in case (also, they have to be different than 0 because of the last test)
while randInt1 == randInt2:
randInt2 = int(randomInt(2)) + 1
# simple arithmetic operations like in Turing tests
if not checkBooleanExpression("(%d+%d)=%d" % (randInt1, randInt2, randInt1 + randInt2)):
retVal = None
elif checkBooleanExpression("%d=%d" % (randInt1, randInt2)):
retVal = None
elif not checkBooleanExpression("%d=(%d-%d)" % (abs(randInt1 - randInt2), max(randInt1, randInt2), min(randInt1, randInt2))):
retVal = None
elif checkBooleanExpression("(%d+%d)=(%d-%d)" % (randInt1, randInt2, randInt1, randInt2)):
retVal = None
if retVal is None:
warnMsg = "false positive injection point detected"
logger.warn(warnMsg)
kb.injection = popValue()
return retVal
def heuristicCheckSqlInjection(place, parameter):
if kb.nullConnection:
debugMsg = "heuristic checking skipped "