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Fixing DB2 boolean-based blind retrieval of non-ASCII chars

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Miroslav Štampar 2026-07-27 12:52:08 +02:00
parent 1d263f22c3
commit d3cfad6a8d
4 changed files with 15 additions and 7 deletions
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12
plugins/dbms/db2/syntax.py
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@ -5,7 +5,8 @@ Copyright (c) 2006-2026 sqlmap developers (https://sqlmap.org)
See the file 'LICENSE' for copying permission
"""
from lib.core.convert import getOrds
from lib.core.convert import getBytes
from lib.core.settings import UNICODE_ENCODING
from plugins.generic.syntax import Syntax as GenericSyntax
class Syntax(GenericSyntax):
@ -17,6 +18,13 @@ class Syntax(GenericSyntax):
"""
def escaper(value):
return "||".join("CHR(%d)" % _ for _ in getOrds(value))
# CHR() is byte-based on DB2, so a non-ASCII codepoint needs its UTF-8 bytes to form a single char
result = []
for char in value:
if ord(char) < 128:
result.append("CHR(%d)" % ord(char))
else:
result.extend("CHR(%d)" % _ for _ in bytearray(getBytes(char, UNICODE_ENCODING, errors="replace", unsafe=False)))
return "||".join(result)
return Syntax._escape(expression, quote, escaper)