CVE-2021-38171

Published: 21 August 2021

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.

Priority

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package	Release	Status
ffmpeg Launchpad, Ubuntu, Debian	bionic	Released (7:3.4.11-0ubuntu0.1)
	focal	Released (7:4.2.7-0ubuntu0.1)
	hirsute	Ignored (end of life)
	impish	Released (7:4.4.2-0ubuntu0.21.10.1)
	jammy	Not vulnerable (7:4.4.1-3ubuntu2)
	trusty	Does not exist
	upstream	Released (4.4.1)
	xenial	Released (7:2.8.17-0ubuntu0.1+esm4) Available with Ubuntu Pro
	Patches: upstream: https://github.com/FFmpeg/FFmpeg/commit/9ffa49496d1aae4cbbb387aac28a9e061a6ab0a6

Severity score breakdown

Parameter	Value
Base score	9.8
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

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