| Name | CVE-2021-21846 |
| Description | Multiple exploitable integer overflow 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 in “stsz” decoder can cause an integer overflow due to unchecked arithmetic resulting in a heap-based buffer overflow that causes memory corruption. An attacker can convince a user to open a video to trigger this vulnerability. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| References | DSA-4966-1 |
| NVD severity | medium |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| gpac (PTS) | stretch | 0.5.2-426-gc5ad4e4+dfsg5-3+deb9u1 | fixed |
| buster | 0.5.2-426-gc5ad4e4+dfsg5-5 | fixed | |
| bullseye | 1.0.1+dfsg1-4 | vulnerable | |
| bullseye (security) | 1.0.1+dfsg1-4+deb11u1 | fixed | |
| bookworm, sid | 1.0.1+dfsg1-5 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| gpac | source | stretch | (not affected) | |||
| gpac | source | buster | (not affected) | |||
| gpac | source | bullseye | 1.0.1+dfsg1-4+deb11u1 | DSA-4966-1 | ||
| gpac | source | (unstable) | 1.0.1+dfsg1-5 |
[buster] - gpac <not-affected> (Vulnerable code not present)
[stretch] - gpac <not-affected> (Vulnerable code not present)
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1297
https://github.com/gpac/gpac/commit/b515fd04f5f00f4a99df741042f1efb31ad56351
https://github.com/gpac/gpac/issues/1814