Vulnerability Monitor

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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.

Published

2021-08-21T17:15:07.700

Last Modified

2024-11-21T06:16:33.257

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-252

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	ffmpeg	ffmpeg	4.4	Yes
Operating System	debian	debian_linux	9.0	Yes
Operating System	debian	debian_linux	10.0	Yes
Operating System	debian	debian_linux	11.0	Yes

References

https://github.com/FFmpeg/FFmpeg/commit/9ffa49496d1aae4cbbb387aac28a9e061a6ab0a6 Patch, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2021/11/msg00012.html Mailing List, Third Party Advisory ([email protected])
https://patchwork.ffmpeg.org/project/ffmpeg/patch/AS8P193MB12542A86E22F8207EC971930B6F19%40AS8P193MB1254.EURP193.PROD.OUTLOOK.COM/ ([email protected])
https://security.gentoo.org/glsa/202312-14 ([email protected])
https://www.debian.org/security/2021/dsa-4990 Third Party Advisory ([email protected])
https://www.debian.org/security/2021/dsa-4998 Third Party Advisory ([email protected])
https://github.com/FFmpeg/FFmpeg/commit/9ffa49496d1aae4cbbb387aac28a9e061a6ab0a6 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2021/11/msg00012.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://patchwork.ffmpeg.org/project/ffmpeg/patch/AS8P193MB12542A86E22F8207EC971930B6F19%40AS8P193MB1254.EURP193.PROD.OUTLOOK.COM/ (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202312-14 (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2021/dsa-4990 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2021/dsa-4998 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)