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Fixes #1752

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Miroslav Stampar
2016-03-12 12:26:30 +01:00
parent e1ce16144a
commit 13366aeb48
2 changed files with 4 additions and 1 deletions
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3
lib/techniques/dns/use.py
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@@ -60,6 +60,9 @@ def dnsUse(payload, expression):
prefix, suffix = ("%s" % randomStr(length=3, alphabet=DNS_BOUNDARIES_ALPHABET) for _ in xrange(2))
chunk_length = MAX_DNS_LABEL / 2 if Backend.getIdentifiedDbms() in (DBMS.ORACLE, DBMS.MYSQL, DBMS.PGSQL) else MAX_DNS_LABEL / 4 - 2
_, _, _, _, _, _, fieldToCastStr, _ = agent.getFields(expression)
extendedField = re.search(r"[^ ,]*%s[^ ,]*" % re.escape(fieldToCastStr), expression).group(0)
if extendedField != fieldToCastStr: # e.g. MIN(surname)
fieldToCastStr = extendedField
nulledCastedField = agent.nullAndCastField(fieldToCastStr)
nulledCastedField = queries[Backend.getIdentifiedDbms()].substring.query % (nulledCastedField, offset, chunk_length)
nulledCastedField = agent.hexConvertField(nulledCastedField)