CVE-2023-40476

Name	CVE-2023-40476
Description	GStreamer H265 Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the parsing of H265 encoded video files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-21768.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3633-1, DSA-5533-1
Debian Bugs	1053259

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
gst-plugins-bad1.0 (PTS)	buster	1.14.4-1+deb10u2	vulnerable
	buster (security)	1.14.4-1+deb10u5	fixed
	bullseye (security), bullseye	1.18.4-3+deb11u4	fixed
	bookworm, bookworm (security)	1.22.0-4+deb12u5	fixed
	sid, trixie	1.24.3-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin	Debian Bugs
gst-plugins-bad0.10	source	(unstable)	(unfixed)
gst-plugins-bad1.0	source	buster	1.14.4-1+deb10u4	DLA-3633-1
gst-plugins-bad1.0	source	bullseye	1.18.4-3+deb11u2	DSA-5533-1
gst-plugins-bad1.0	source	bookworm	1.22.0-4+deb12u2	DSA-5533-1
gst-plugins-bad1.0	source	(unstable)	1.22.7-1		1053259

Notes

https://gstreamer.freedesktop.org/security/sa-2023-0008.html
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5364
Fixed by: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/ff91a3d8d6f7e2412c44663bf30fad5c7fdbc9d9
Fixed by: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/fddda166222a067d0e511950a0a8cfb9f5a521b7 (1.22.6)