CVE-2021-38171

Description

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.22%
Vendor Advisory debian.org Vendor Advisory debian.org Vendor Advisory gentoo.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://patchwork.ffmpeg.org/project/ffmpeg/patch/AS8P193MB12542A86E22F8207EC971930B6F19%40AS8P193MB1254.EURP193.PROD.OUTLOOK.COM/
https://github.com/FFmpeg/FFmpeg/commit/9ffa49496d1aae4cbbb387aac28a9e061a6ab0a6 third party advisory patch
https://www.debian.org/security/2021/dsa-4990 third party advisory vendor advisory
https://www.debian.org/security/2021/dsa-4998 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2021/11/msg00012.html third party advisory mailing list
https://security.gentoo.org/glsa/202312-14 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-38171?
CVE-2021-38171 has been scored as a critical severity vulnerability.
How to fix CVE-2021-38171?
To fix CVE-2021-38171, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-38171 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-38171 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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