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Two major bug fixes related to UNION technique query forging

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This commit is contained in:
Bernardo Damele 2011-01-19 23:46:39 +00:00
parent 7a060e756d
commit 701947490b
1 changed files with 26 additions and 14 deletions
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24
lib/core/agent.py
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@ -311,6 +311,9 @@ class Agent:
if not backend.getDbms():
return fields
if fields.startswith("(CASE"):
nulledCastedConcatFields = fields
else:
fields = fields.replace(", ", ",")
fieldsSplitted = fields.split(",")
dbmsDelimiter = queries[backend.getIdentifiedDbms()].delimiter.query
@ -428,10 +431,13 @@ class Agent:
if fieldsExists:
concatenatedQuery = concatenatedQuery.replace("SELECT ", "CONCAT('%s'," % kb.misc.start, 1)
concatenatedQuery += ",'%s')" % kb.misc.stop
elif fieldsSelectCase:
concatenatedQuery = concatenatedQuery.replace("SELECT ", "CONCAT('%s'," % kb.misc.start, 1)
concatenatedQuery += ",'%s')" % kb.misc.stop
elif fieldsSelectFrom:
concatenatedQuery = concatenatedQuery.replace("SELECT ", "CONCAT('%s'," % kb.misc.start, 1)
concatenatedQuery = concatenatedQuery.replace(" FROM ", ",'%s') FROM " % kb.misc.stop, 1)
elif fieldsSelect or fieldsSelectCase:
elif fieldsSelect:
concatenatedQuery = concatenatedQuery.replace("SELECT ", "CONCAT('%s'," % kb.misc.start, 1)
concatenatedQuery += ",'%s')" % kb.misc.stop
elif fieldsNoSelect:
@ -441,10 +447,13 @@ class Agent:
if fieldsExists:
concatenatedQuery = concatenatedQuery.replace("SELECT ", "'%s'||" % kb.misc.start, 1)
concatenatedQuery += "||'%s'" % kb.misc.stop
elif fieldsSelectCase:
concatenatedQuery = concatenatedQuery.replace("SELECT ", "'%s'||" % kb.misc.start, 1)
concatenatedQuery += "||'%s'" % kb.misc.stop
elif fieldsSelectFrom:
concatenatedQuery = concatenatedQuery.replace("SELECT ", "'%s'||" % kb.misc.start, 1)
concatenatedQuery = concatenatedQuery.replace(" FROM ", "||'%s' FROM " % kb.misc.stop, 1)
elif fieldsSelect or fieldsSelectCase:
elif fieldsSelect:
concatenatedQuery = concatenatedQuery.replace("SELECT ", "'%s'||" % kb.misc.start, 1)
concatenatedQuery += "||'%s'" % kb.misc.stop
elif fieldsNoSelect:
@ -461,10 +470,13 @@ class Agent:
topNum = re.search("\ASELECT\s+TOP\s+([\d]+)\s+", concatenatedQuery, re.I).group(1)
concatenatedQuery = concatenatedQuery.replace("SELECT TOP %s " % topNum, "TOP %s '%s'+" % (topNum, kb.misc.start), 1)
concatenatedQuery = concatenatedQuery.replace(" FROM ", "+'%s' FROM " % kb.misc.stop, 1)
elif fieldsSelectCase:
concatenatedQuery = concatenatedQuery.replace("SELECT ", "'%s'+" % kb.misc.start, 1)
concatenatedQuery += "+'%s'" % kb.misc.stop
elif fieldsSelectFrom:
concatenatedQuery = concatenatedQuery.replace("SELECT ", "'%s'+" % kb.misc.start, 1)
concatenatedQuery = concatenatedQuery.replace(" FROM ", "+'%s' FROM " % kb.misc.stop, 1)
elif fieldsSelect or fieldsSelectCase:
elif fieldsSelect:
concatenatedQuery = concatenatedQuery.replace("SELECT ", "'%s'+" % kb.misc.start, 1)
concatenatedQuery += "+'%s'" % kb.misc.stop
elif fieldsNoSelect:
@ -522,12 +534,12 @@ class Agent:
if backend.getIdentifiedDbms() in FROM_TABLE and inbandQuery.endswith(FROM_TABLE[backend.getIdentifiedDbms()]):
inbandQuery = inbandQuery[:-len(FROM_TABLE[backend.getIdentifiedDbms()])]
for element in range(count):
for element in range(0, count):
if element > 0:
inbandQuery += ", "
if element == position:
if " FROM " in query and "EXISTS(" not in query and not query.startswith("SELECT "):
if " FROM " in query and "(CASE " not in query and "EXISTS(" not in query and not query.startswith("SELECT "):
conditionIndex = query.index(" FROM ")
inbandQuery += query[:conditionIndex]
else:
@ -535,7 +547,7 @@ class Agent:
else:
inbandQuery += char
if " FROM " in query and "EXISTS(" not in query and not query.startswith("SELECT "):
if " FROM " in query and "(CASE" not in query and "EXISTS(" not in query and not query.startswith("SELECT "):
conditionIndex = query.index(" FROM ")
inbandQuery += query[conditionIndex:]