VulnerabilityModified
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.
CRITICAL 9.8EPSS 2.41%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.41% probability · 83th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-252
- Affected
- ffmpeg/ffmpeg · debian/debian linux
- Source
- cve@mitre.org
References
- https://github.com/FFmpeg/FFmpeg/commit/9ffa49496d1aae4cbbb387aac28a9e061a6ab0a6Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/11/msg00012.htmlMailing List, Third Party Advisory
- https://patchwork.ffmpeg.org/project/ffmpeg/patch/AS8P193MB12542A86E22F8207EC971930B6F19%40AS8P193MB1254.EURP193.PROD.OUTLOOK.COM/
- https://security.gentoo.org/glsa/202312-14
- https://www.debian.org/security/2021/dsa-4990Third Party Advisory
- https://www.debian.org/security/2021/dsa-4998Third Party Advisory
- https://github.com/FFmpeg/FFmpeg/commit/9ffa49496d1aae4cbbb387aac28a9e061a6ab0a6Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/11/msg00012.htmlMailing List, Third Party Advisory
- https://patchwork.ffmpeg.org/project/ffmpeg/patch/AS8P193MB12542A86E22F8207EC971930B6F19%40AS8P193MB1254.EURP193.PROD.OUTLOOK.COM/
- https://security.gentoo.org/glsa/202312-14
- https://www.debian.org/security/2021/dsa-4990Third Party Advisory
- https://www.debian.org/security/2021/dsa-4998Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.