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improvement for UNION/ERROR case

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This commit is contained in:
Miroslav Stampar 2011-04-20 10:17:42 +00:00
parent 1c1c20fb64
commit 4fadcf0615
1 changed files with 10 additions and 1 deletions
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11
lib/techniques/inband/union/test.py
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@ -25,6 +25,7 @@ from lib.core.common import pushValue
from lib.core.common import randomStr
from lib.core.common import removeReflectiveValues
from lib.core.common import stdev
from lib.core.common import wasLastRequestDBMSError
from lib.core.data import conf
from lib.core.data import kb
from lib.core.data import logger
@ -74,6 +75,7 @@ def __findUnionCharCount(comment, place, parameter, value, prefix, suffix, where
deviation = stdev(ratios)
if abs(max_ - min_) < MIN_STATISTICAL_RANGE:
kb.errorIsNone = popValue()
return None
lower, upper = average(ratios) - UNION_STDEV_COEFF * deviation, average(ratios) + UNION_STDEV_COEFF * deviation
@ -129,6 +131,12 @@ def __unionPosition(comment, place, parameter, value, prefix, suffix, count, whe
removeReflectiveValues(listToStrValue(headers.headers if headers else None), \
payload, True) or "")
unionErrorCase = kb.errorIsNone and wasLastRequestDBMSError()
if unionErrorCase:
warnMsg = "combined UNION/ERROR sql injection case found on column %d. " % (position + 1)
warnMsg += "will try to find another column with better characteristics."
logger.warn(warnMsg)
if content and phrase in content:
validPayload = payload
vector = (position, count, comment, prefix, suffix, conf.uChar, where)
@ -151,7 +159,8 @@ def __unionPosition(comment, place, parameter, value, prefix, suffix, count, whe
if content and ((phrase in content and phrase2 not in content) or (phrase not in content and phrase2 in content)):
vector = (position, count, comment, prefix, suffix, conf.uChar, PAYLOAD.WHERE.NEGATIVE)
break
if not unionErrorCase:
break
return validPayload, vector