libtinyxml: patch CVE-2021-42260

Take patch from Debian:
https://salsa.debian.org/debian/tinyxml/-/commit/38db99c12e43d7d6e349403ce4d39a706708603d

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

2 files changed, 30 insertions, 1 deletions

diff --git a/meta-oe/recipes-support/libtinyxml/libtinyxml/CVE-2021-42260.patch b/meta-oe/recipes-support/libtinyxml/libtinyxml/CVE-2021-42260.patch
new file mode 100644
index 0000000000..8fc623744c
--- /dev/null
+++ b/meta-oe/recipes-support/libtinyxml/libtinyxml/CVE-2021-42260.patch
@@ -0,0 +1,27 @@
+Description: 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)
+Origin: https://sourceforge.net/p/tinyxml/git/merge-requests/1/
+
+CVE: CVE-2021-42260
+Upstream-Status: Inactive-Upstream [lastrelease: 2011]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+
+--- a/tinyxmlparser.cpp
++++ b/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
+                                {
diff --git a/meta-oe/recipes-support/libtinyxml/libtinyxml_2.6.2.bb b/meta-oe/recipes-support/libtinyxml/libtinyxml_2.6.2.bb
index 0719ba5fd4..0d18dd4a89 100644
--- a/meta-oe/recipes-support/libtinyxml/libtinyxml_2.6.2.bb
+++ b/meta-oe/recipes-support/libtinyxml/libtinyxml_2.6.2.bb
@@ -10,7 +10,9 @@ CVE_PRODUCT = "tinyxml"
 
 SRC_URI = "${SOURCEFORGE_MIRROR}/tinyxml/tinyxml_${@'${PV}'.replace('.', '_')}.tar.gz \
            file://enforce-use-stl.patch \
-           file://entity-encoding.patch"
+           file://entity-encoding.patch \
+           file://CVE-2021-42260.patch \
+"
 SRC_URI[sha256sum] = "15bdfdcec58a7da30adc87ac2b078e4417dbe5392f3afb719f9ba6d062645593"
 
 S = "${WORKDIR}/tinyxml"