CVE-2021-21862

Name	CVE-2021-21862
Description	Multiple exploitable integer truncation vulnerabilities exist within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. A specially crafted MPEG-4 input can cause an improper memory allocation resulting in a heap-based buffer overflow that causes memory corruption The implementation of the parser used for the “Xtra” FOURCC code is handled. An attacker can convince a user to open a video to trigger this vulnerability.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
gpac (PTS)	bullseye (security), bullseye	1.0.1+dfsg1-4+deb11u3	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
gpac	source	(unstable)	(not affected)

Notes

- gpac <not-affected> (Vulnerable code not present)
Introduced in https://github.com/gpac/gpac/commit/69ae9059fc
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1298
https://github.com/gpac/gpac/commit/8cd33e8977fd5f4215e4b67c309fd403762bfeb7
https://github.com/gpac/gpac/issues/1814