Vulnerability Details : CVE-2021-38171
adts_decode_extradata in libavformat/adtsenc.c in FFmpeg 4.4 does not check the init_get_bits return value, which is a necessary step because the second argument to init_get_bits can be crafted.
Products affected by CVE-2021-38171
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
- cpe:2.3:a:ffmpeg:ffmpeg:4.4:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-38171
0.64%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 79 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-38171
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2021-38171
-
The product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-38171
-
https://github.com/FFmpeg/FFmpeg/commit/9ffa49496d1aae4cbbb387aac28a9e061a6ab0a6
avformat/adtsenc: return value check for init_get_bits in adts_decode… · FFmpeg/FFmpeg@9ffa494 · GitHubPatch;Third Party Advisory
-
https://www.debian.org/security/2021/dsa-4998
Debian -- Security Information -- DSA-4998-1 ffmpegThird Party Advisory
-
https://patchwork.ffmpeg.org/project/ffmpeg/patch/AS8P193MB12542A86E22F8207EC971930B6F19@AS8P193MB1254.EURP193.PROD.OUTLOOK.COM/
[FFmpeg-devel,v2,1/1] return value check for init_get_bits in adts_decode_extradata - PatchworkPatch;Third Party Advisory
-
https://patchwork.ffmpeg.org/project/ffmpeg/patch/AS8P193MB12542A86E22F8207EC971930B6F19%40AS8P193MB1254.EURP193.PROD.OUTLOOK.COM/
[FFmpeg-devel,v2,1/1] return value check for init_get_bits in adts_decode_extradata - Patchwork
-
https://lists.debian.org/debian-lts-announce/2021/11/msg00012.html
[SECURITY] [DLA 2818-1] ffmpeg security updateMailing List;Third Party Advisory
-
https://security.gentoo.org/glsa/202312-14
FFmpeg: Multiple Vulnerabilities (GLSA 202312-14) — Gentoo security
-
https://www.debian.org/security/2021/dsa-4990
Debian -- Security Information -- DSA-4990-1 ffmpegThird Party Advisory
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