CVE-2021-38171

moderate-risk
Published 2021-08-21

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.

Do I need to act?

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0.21% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (4)

Affected Vendors

Debian Ffmpeg

References (12)

Patch https://github.com/FFmpeg/FFmpeg/commit/9ffa49496d1aae4cbbb387aac28a9e061a6ab0a6
Mailing List https://lists.debian.org/debian-lts-announce/2021/11/msg00012.html
https://patchwork.ffmpeg.org/project/ffmpeg/patch/AS8P193MB12542A86E22F8207EC971...
https://security.gentoo.org/glsa/202312-14
Third Party Advisory https://www.debian.org/security/2021/dsa-4990
Third Party Advisory https://www.debian.org/security/2021/dsa-4998
Patch https://github.com/FFmpeg/FFmpeg/commit/9ffa49496d1aae4cbbb387aac28a9e061a6ab0a6
Mailing List https://lists.debian.org/debian-lts-announce/2021/11/msg00012.html
https://patchwork.ffmpeg.org/project/ffmpeg/patch/AS8P193MB12542A86E22F8207EC971...
https://security.gentoo.org/glsa/202312-14
Third Party Advisory https://www.debian.org/security/2021/dsa-4990
Third Party Advisory https://www.debian.org/security/2021/dsa-4998
43
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 1/34 · Minimal
Exposure 10/34 · Low