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From: Guilhem Moulin <guilhem@debian.org>
Date: Sat, 30 Dec 2023 14:15:54 +0100
Subject: Avoid reachable assertion via crafted XML document with a '\0'
located after whitespace
Bug: https://www.forescout.com/resources/sierra21-vulnerabilities
Bug-Debian: https://bugs.debian.org/1059315
Bug-Debian: https://security-tracker.debian.org/tracker/CVE-2023-34194
Bug-Debian: https://security-tracker.debian.org/tracker/CVE-2023-40462
---
tinyxmlparser.cpp | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/tinyxmlparser.cpp b/tinyxmlparser.cpp
index 8aa0dfa..1601962 100644
--- a/tinyxmlparser.cpp
+++ b/tinyxmlparser.cpp
@@ -1606,6 +1606,10 @@ const char* TiXmlDeclaration::Parse( const char* p, TiXmlParsingData* data, TiXm
}
p = SkipWhiteSpace( p, _encoding );
+ if ( !p || !*p )
+ {
+ break;
+ }
if ( StringEqual( p, "version", true, _encoding ) )
{
TiXmlAttribute attrib;
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