| Name | CVE-2021-21852 |
| 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 at “stss” 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, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-5411-1 |
| Debian Bugs | 994746 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| ccextractor (PTS) | buster | 0.87+ds1-1 | vulnerable |
| bullseye | 0.88+ds1-1 | vulnerable |
| sid | 0.94+ds1-3 | fixed |
| gpac (PTS) | buster | 0.5.2-426-gc5ad4e4+dfsg5-5 | fixed |
| bullseye (security), bullseye | 1.0.1+dfsg1-4+deb11u3 | fixed |
| sid | 2.2.1+dfsg1-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| ccextractor | source | (unstable) | 0.93+ds2-1 | | | 994746 |
| gpac | source | stretch | (not affected) | | | |
| gpac | source | buster | (not affected) | | | |
| gpac | source | bullseye | 1.0.1+dfsg1-4+deb11u2 | | DSA-5411-1 | |
| gpac | source | (unstable) | 1.0.1+dfsg1-5 | | | |
Notes
[buster] - gpac <not-affected> (Vulnerable code not present)
[stretch] - gpac <not-affected> (Vulnerable code not present)
[bullseye] - ccextractor <no-dsa> (Minor issue)
[buster] - ccextractor <no-dsa> (Minor issue)
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1297
https://github.com/gpac/gpac/commit/b515fd04f5f00f4a99df741042f1efb31ad56351
https://github.com/gpac/gpac/commit/592ba2689a3f2fc787371eda490fde4f84e60315
https://github.com/gpac/gpac/issues/1814