38 lines
1.2 KiB
Diff
38 lines
1.2 KiB
Diff
From f7ca0035d17a663f55668e662b840afce7b86112 Mon Sep 17 00:00:00 2001
|
|
From: Christian Voegl <cvoegl@suse.com>
|
|
Date: Wed, 27 Oct 2021 11:25:18 +0200
|
|
Subject: [PATCH] In stamp always advance the pointer if *p= 0xef
|
|
|
|
The current implementation only advanced if 0xef is followed
|
|
by two non-zero bytes. In case of malformed input (0xef should be
|
|
the start byte of a three byte character) this leads to an infinite
|
|
loop. (CVE-2021-42260)
|
|
|
|
[Retrieved (and backported) from:
|
|
https://sourceforge.net/p/tinyxml/git/merge-requests/1]
|
|
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
|
|
---
|
|
tinyxmlparser.cpp | 6 ++++++
|
|
1 file changed, 6 insertions(+)
|
|
|
|
diff --git a/src/tinyxmlparser.cpp b/src/tinyxmlparser.cpp
|
|
index 81b7eae..8aa0dfa 100755
|
|
--- a/src/tinyxmlparser.cpp
|
|
+++ b/src/tinyxmlparser.cpp
|
|
@@ -274,6 +274,12 @@ void TiXmlParsingData::Stamp( const char* now, TiXmlEncoding encoding )
|
|
else
|
|
{ p +=3; ++col; } // A normal character.
|
|
}
|
|
+ else
|
|
+ {
|
|
+ // TIXML_UTF_LEAD_0 (239) is the start character of a 3 byte sequence, so
|
|
+ // there is something wrong here. Just advance the pointer to evade infinite loops
|
|
+ ++p;
|
|
+ }
|
|
}
|
|
else
|
|
{
|
|
--
|
|
2.34.1
|
|
|