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Implements ARRAY_AGG for PostgreSQL

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This commit is contained in:
Miroslav Stampar 2020-10-28 14:36:25 +01:00
parent 73d0c67a80
commit a5852390f7
2 changed files with 31 additions and 24 deletions
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2
lib/core/settings.py
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@ -18,7 +18,7 @@ from lib.core.enums import OS
from thirdparty.six import unichr as _unichr
# sqlmap version (<major>.<minor>.<month>.<monthly commit>)
VERSION = "1.4.10.23"
VERSION = "1.4.10.24"
TYPE = "dev" if VERSION.count('.') > 2 and VERSION.split('.')[-1] != '0' else "stable"
TYPE_COLORS = {"dev": 33, "stable": 90, "pip": 34}
VERSION_STRING = "sqlmap/%s#%s" % ('.'.join(VERSION.split('.')[:-1]) if VERSION.count('.') > 2 and VERSION.split('.')[-1] == '0' else VERSION, TYPE)

53
lib/techniques/union/use.py
View File

@ -135,16 +135,22 @@ def _oneShotUnionUse(expression, unpack=True, limited=False):
else:
retVal = getUnicode(retVal)
elif kb.jsonAggMode:
output = extractRegexResult(r"(?P<result>%s.*?%s)" % (kb.chars.start, kb.chars.stop), page or "")
if output:
try:
retVal = ""
for row in json.loads(output[len(kb.chars.start):-len(kb.chars.stop)]):
retVal += "%s%s%s" % (kb.chars.start, row, kb.chars.stop)
except:
pass
else:
retVal = getUnicode(retVal)
if Backend.isDbms(DBMS.PGSQL):
output = extractRegexResult(r"(?P<result>%s.*%s)" % (kb.chars.start, kb.chars.stop), page or "")
if output:
retVal = output
else:
output = extractRegexResult(r"(?P<result>%s.*?%s)" % (kb.chars.start, kb.chars.stop), page or "")
if output:
output = output[len(kb.chars.start):-len(kb.chars.stop)]
try:
retVal = ""
for row in json.loads(output):
retVal += "%s%s%s" % (kb.chars.start, row, kb.chars.stop)
except:
pass
else:
retVal = getUnicode(retVal)
else:
# Parse the returned page to get the exact UNION-based
# SQL injection output
@ -248,16 +254,24 @@ def unionUse(expression, unpack=True, dump=False):
# Set kb.partRun in case the engine is called from the API
kb.partRun = getPartRun(alias=False) if conf.api else None
if Backend.getIdentifiedDbms() in (DBMS.MYSQL, DBMS.ORACLE) and expressionFields:
if expressionFieldsList and len(expressionFieldsList) > 1 and "ORDER BY" in expression.upper():
# Removed ORDER BY clause because UNION does not play well with it
expression = re.sub(r"(?i)\s*ORDER BY\s+[\w,]+", "", expression)
debugMsg = "stripping ORDER BY clause from statement because "
debugMsg += "it does not play well with UNION query SQL injection"
singleTimeDebugMessage(debugMsg)
if Backend.getIdentifiedDbms() in (DBMS.MYSQL, DBMS.ORACLE, DBMS.PGSQL) and expressionFields:
match = re.search(r"SELECT\s*(.+?)\bFROM", expression, re.I)
if match and not (Backend.isDbms(DBMS.ORACLE) and FROM_DUMMY_TABLE[DBMS.ORACLE] in expression):
kb.jsonAggMode = True
if Backend.isDbms(DBMS.MYSQL):
_ = expression.replace(expressionFields, "CONCAT('%s',JSON_ARRAYAGG(CONCAT_WS('%s',%s)),'%s')" % (kb.chars.start, kb.chars.delimiter, expressionFields, kb.chars.stop), 1)
else:
_ = expression.replace(expressionFields, "'%s'||JSON_ARRAYAGG(%s)||'%s'" % (kb.chars.start, ("||'%s'||" % kb.chars.delimiter).join(expressionFieldsList), kb.chars.stop), 1)
_ = re.sub(r"(?i)\s*ORDER BY ROWNUM", "", _)
output = _oneShotUnionUse(_, False)
query = expression.replace(expressionFields, "CONCAT('%s',JSON_ARRAYAGG(CONCAT_WS('%s',%s)),'%s')" % (kb.chars.start, kb.chars.delimiter, expressionFields, kb.chars.stop), 1)
elif Backend.isDbms(DBMS.ORACLE):
query = expression.replace(expressionFields, "'%s'||JSON_ARRAYAGG(%s)||'%s'" % (kb.chars.start, ("||'%s'||" % kb.chars.delimiter).join(expressionFieldsList), kb.chars.stop), 1)
elif Backend.isDbms(DBMS.PGSQL):
query = expression.replace(expressionFields, "ARRAY_AGG('%s'||%s||'%s')::text" % (kb.chars.start, ("||'%s'||" % kb.chars.delimiter).join("COALESCE(%s::text,' ')" % field for field in expressionFieldsList), kb.chars.stop), 1)
output = _oneShotUnionUse(query, False)
value = parseUnionPage(output)
kb.jsonAggMode = False
elif Backend.isDbms(DBMS.MSSQL) and kb.dumpColumns:
@ -267,13 +281,6 @@ def unionUse(expression, unpack=True, dump=False):
value = parseUnionPage(output)
kb.rowXmlMode = False
if expressionFieldsList and len(expressionFieldsList) > 1 and "ORDER BY" in expression.upper():
# Removed ORDER BY clause because UNION does not play well with it
expression = re.sub(r"(?i)\s*ORDER BY\s+[\w,]+", "", expression)
debugMsg = "stripping ORDER BY clause from statement because "
debugMsg += "it does not play well with UNION query SQL injection"
singleTimeDebugMessage(debugMsg)
# We have to check if the SQL query might return multiple entries
# if the technique is partial UNION query and in such case forge the
# SQL limiting the query output one entry at a time