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34 lines
1.1 KiB
Python
34 lines
1.1 KiB
Python
#!/usr/bin/env python
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"""
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Copyright (c) 2006-2021 sqlmap developers (https://sqlmap.org/)
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See the file 'LICENSE' for copying permission
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"""
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from lib.core.common import Backend
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from lib.core.common import randomInt
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from lib.core.data import conf
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from lib.core.data import kb
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from lib.core.data import logger
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from lib.core.dicts import FROM_DUMMY_TABLE
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from lib.core.exception import SqlmapNotVulnerableException
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from lib.techniques.dns.use import dnsUse
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def dnsTest(payload):
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logger.info("testing for data retrieval through DNS channel")
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randInt = randomInt()
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kb.dnsTest = dnsUse(payload, "SELECT %d%s" % (randInt, FROM_DUMMY_TABLE.get(Backend.getIdentifiedDbms(), ""))) == str(randInt)
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if not kb.dnsTest:
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errMsg = "data retrieval through DNS channel failed"
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if not conf.forceDns:
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conf.dnsDomain = None
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errMsg += ". Turning off DNS exfiltration support"
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logger.error(errMsg)
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else:
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raise SqlmapNotVulnerableException(errMsg)
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else:
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infoMsg = "data retrieval through DNS channel was successful"
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logger.info(infoMsg)
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