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

plugins/dbms/db2/syntax.py

@@ -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)