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Fix heuristicCheckDbms() False/None inconsistency corrupting kb.reduceTests, wrongly skipping DBMS-specific tests by tanaydin · Pull Request #6132 · sqlmapproject/sqlmap · GitHub

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16 changes: 13 additions & 3 deletions lib/controller/action.py
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters
Original file line number Diff line number Diff line change
Expand Up @@ -103,9 +103,19 @@ def action():
errMsg += ". You can try to rerun without using optimization "
errMsg += "switch '%s'" % ("-o" if conf.optimize else "--null-connection")

raise SqlmapUnsupportedDBMSException(errMsg)

conf.dumper.singleString(conf.dbmsHandler.getFingerprint())
if kb.injection and kb.injection.place is not None:
# An injection point WAS already found during detection (kb.injection.place is set,
# e.g. via a generic, DBMS-agnostic boolean-based/UNION test), but the LATER, separate
# fingerprint-confirmation phase (conf.dbmsHandler / checkDbms()) failed to pin down
# which DBMS it actually is - e.g. a flaky target where a DBMS-specific
# self-comparison probe intermittently comes back false. Warn instead of aborting, so
# the scan continues; Backend.getDbms() stays None, so any later "back-end DBMS: %s"
# report legitimately prints 'None' despite an injection having been detected earlier.
logger.warning(errMsg)
else:
raise SqlmapUnsupportedDBMSException(errMsg)

conf.dumper.singleString(conf.dbmsHandler.getFingerprint() if conf.dbmsHandler else "back-end DBMS: %s" % Backend.getDbms())

kb.fingerprinted = True

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4 changes: 2 additions & 2 deletions lib/controller/checks.py
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters
Original file line number Diff line number Diff line change
Expand Up @@ -183,7 +183,7 @@ def checkSqlInjection(place, parameter, value):
if kb.reduceTests is None and not conf.testFilter and (intersect(Backend.getErrorParsedDBMSes(), SUPPORTED_DBMS, True) or kb.heuristicDbms or injection.dbms):
msg = "it looks like the back-end DBMS is '%s'. " % (Format.getErrorParsedDBMSes() or kb.heuristicDbms or joinValue(injection.dbms, '/'))
msg += "Do you want to skip test payloads specific for other DBMSes? [Y/n]"
kb.reduceTests = (Backend.getErrorParsedDBMSes() or [kb.heuristicDbms]) if readInput(msg, default='Y', boolean=True) else []
kb.reduceTests = (Backend.getErrorParsedDBMSes() or [kb.heuristicDbms] if kb.heuristicDbms else injection.dbms if isinstance(injection.dbms, list) else [injection.dbms]) if readInput(msg, default='Y', boolean=True) else []

# If the DBMS has been fingerprinted (via DBMS-specific error
# message, via simple heuristic check or via DBMS-specific
Expand Down Expand Up @@ -925,7 +925,7 @@ def heuristicCheckDbms(injection):
may be
"""

retVal = False
retVal = None

if conf.skipHeuristics:
return retVal
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