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minor adjustment of a time based char retrievals (no more infinite increasing of timeSec value for problematic characters)

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This commit is contained in:
Miroslav Stampar 2011-08-16 06:50:20 +00:00
parent 600ef3eace
commit 7cc5743c5d
4 changed files with 35 additions and 20 deletions
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25
doc/THANKS
View File

@ -586,6 +586,13 @@ fufuh <fufuh@users.sourceforge.net>
james <james@ev6.net>
for reporting a bug
Joe "Pragmatk" <pragmatk@gmail.com>
for reporting a few bugs
John Smith <tixos@live.com>
for reporting several bugs
for suggesting some features
m4l1c3 <malice.anon@gmail.com>
for reporting considerable amount of bugs
@ -598,26 +605,22 @@ mitchell <mitchell@tufala.net>
nightman <nightman@email.de>
for reporting considerable amount of bugs
Oso Dog osodog123@yahoo.com
for reporting a minor bug
pacman730 <pacman730@users.sourceforge.net>
for reporting a bug
pentestmonkey <pentestmonkey@pentestmonkey.net>
for reporting several bugs
for suggesting a few minor enhancements
Phat R. <phatthanaphol@gmail.com>
for reporting a few bugs
Phil P <@superevr>
for suggesting a minor enhancement
Joe "Pragmatk" <pragmatk@gmail.com>
for reporting a few bugs
John Smith <tixos@live.com>
for reporting several bugs
for suggesting some features
pentestmonkey <pentestmonkey@pentestmonkey.net>
for reporting several bugs
for suggesting a few minor enhancements
ragos <ragos@joker.ms>
for reporting a minor bug

1
lib/core/option.py
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@ -1432,6 +1432,7 @@ def __setKnowledgeBaseAttributes(flushAll=True):
kb.pageTemplates = dict()
kb.orderByColumns = None
kb.originalPage = None
kb.originalTimeDelay = None
# Back-end DBMS underlying operating system fingerprint via banner (-b)
# parsing

3
lib/core/settings.py
View File

@ -391,3 +391,6 @@ TRIM_STDOUT_DUMP_SIZE = 1024
# Step used in ORDER BY technique used for finding the right number of columns in UNION query injections
ORDER_BY_STEP = 10
# Maximum number of times for revalidation of a character in time-based injections
MAX_TIME_REVALIDATION_STEPS = 5

26
lib/techniques/blind/inference.py
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@ -44,6 +44,7 @@ from lib.core.settings import INFERENCE_UNKNOWN_CHAR
from lib.core.settings import INFERENCE_GREATER_CHAR
from lib.core.settings import INFERENCE_EQUALS_CHAR
from lib.core.settings import INFERENCE_NOT_EQUALS_CHAR
from lib.core.settings import MAX_TIME_REVALIDATION_STEPS
from lib.core.settings import PYVERSION
from lib.core.threads import getCurrentThreadData
from lib.core.threads import runThreads
@ -259,16 +260,23 @@ def bisection(payload, expression, length=None, charsetType=None, firstChar=None
errMsg = "invalid character detected. retrying.."
logger.error(errMsg)
conf.timeSec += 1
warnMsg = "increasing time delay to %d second%s " % (conf.timeSec, 's' if conf.timeSec > 1 else '')
warnMsg += "(due to invalid char)"
logger.warn(warnMsg)
if not kb.originalTimeDelay:
kb.originalTimeDelay = conf.timeSec
if kb.adjustTimeDelay:
dbgMsg = "turning off auto-adjustment mechanism"
logger.debug(dbgMsg)
kb.adjustTimeDelay = False
return getChar(idx, originalTbl, continuousOrder, expand)
conf.timeSec += 1
if (conf.timeSec - kb.originalTimeDelay) <= MAX_TIME_REVALIDATION_STEPS:
warnMsg = "increasing time delay to %d second%s " % (conf.timeSec, 's' if conf.timeSec > 1 else '')
warnMsg += "(due to invalid char)"
logger.warn(warnMsg)
if kb.adjustTimeDelay:
dbgMsg = "turning off auto-adjustment mechanism"
logger.debug(dbgMsg)
kb.adjustTimeDelay = False
return getChar(idx, originalTbl, continuousOrder, expand)
else:
conf.timeSec = kb.originalTimeDelay
return None
else:
return decodeIntToUnicode(retVal)
else: