libavcodec/hevcdec.c in FFmpeg 3.4 and 4.1.2 mishandles detection of duplicate first slices, which allows remote attackers to cause a denial of service (NULL pointer dereference and out-of-array access) or possibly have unspecified other impact via crafted HEVC data.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ffmpeg | Ffmpeg | 3.4 (including) | 3.4 (including) |
| Ffmpeg | Ffmpeg | 4.1.2 (including) | 4.1.2 (including) |
| Ffmpeg | Ubuntu | bionic | * |
| Ffmpeg | Ubuntu | cosmic | * |
| Ffmpeg | Ubuntu | disco | * |
| Ffmpeg | Ubuntu | esm-apps/bionic | * |
| Ffmpeg | Ubuntu | esm-apps/xenial | * |
| Ffmpeg | Ubuntu | xenial | * |
Potential Mitigations
References
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00012.html
- http://www.securityfocus.com/bid/108034
- https://github.com/FFmpeg/FFmpeg/commit/54655623a82632e7624714d7b2a3e039dc5faa7e
- https://github.com/FFmpeg/FFmpeg/commit/9ccc633068c6fe76989f487c8932bd11886ad65b
- https://lists.debian.org/debian-lts-announce/2019/05/msg00043.html
- https://seclists.org/bugtraq/2019/May/60
- https://usn.ubuntu.com/3967-1/
- https://usn.ubuntu.com/4431-1/
- https://www.debian.org/security/2019/dsa-4449
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00012.html
- http://www.securityfocus.com/bid/108034
- https://github.com/FFmpeg/FFmpeg/commit/54655623a82632e7624714d7b2a3e039dc5faa7e
- https://github.com/FFmpeg/FFmpeg/commit/9ccc633068c6fe76989f487c8932bd11886ad65b
- https://lists.debian.org/debian-lts-announce/2019/05/msg00043.html
- https://seclists.org/bugtraq/2019/May/60
- https://usn.ubuntu.com/3967-1/
- https://usn.ubuntu.com/4431-1/
- https://www.debian.org/security/2019/dsa-4449