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CVE-2021-38171

Date: August 20, 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.

Language: C

Severity Score

9.8

Related Resources (12)

Url: https://patchwork.ffmpeg.org/project/ffmpeg/patch/AS8P193MB12542A86E22F8207EC971930B6F19@AS8P193MB1254.EURP193.PROD.OUTLOOK.COM/

Url: https://lists.debian.org/debian-lts-announce/2021/11/msg00012.html

Url: https://patchwork.ffmpeg.org/project/ffmpeg/patch/AS8P193MB12542A86E22F8207EC971930B6F19%40AS8P193MB1254.EURP193.PROD.OUTLOOK.COM/

Url: https://www.debian.org/security/2021/dsa-4990

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-38171

Url: https://security-tracker.debian.org/tracker/CVE-2021-38171

Url: https://github.com/FFmpeg/FFmpeg/commit/9ffa49496d1aae4cbbb387aac28a9e061a6ab0a6

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2021-38171

Url: https://security.alpinelinux.org/vuln/CVE-2021-38171

Url: https://www.debian.org/security/2021/dsa-4998

Url: https://security.gentoo.org/glsa/202312-14

Url: https://www.mend.io/vulnerability-database/CVE-2021-38171

Severity Score

9.8

Weakness Type (CWE)

Unchecked Return Value

CWE-252

CVSS v3.1

Base Score:	9.8
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	7.5
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	PARTIAL
Additional information:

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