Unchecked Return Value in FFmpeg - CVE-2021-38114
Published: June 18, 2024
Vulnerability identifier: #VU92207
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-38114
CWE-ID: CWE-252
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: ffmpeg.sourceforge.net
Affected software:
FFmpeg
FFmpeg
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to libavcodec/dnxhddec.c in FFmpeg does not check the return value of the init_vlc function. A local user can trick the victim into opening a specially crafted file to trigger resource exhaustion and perform a denial of service (DoS) attack.
How to mitigate CVE-2021-38114
Install updates from vendor's website.
Sources
- https://github.com/FFmpeg/FFmpeg/commit/7150f9575671f898382c370acae35f9087a30ba1
- https://patchwork.ffmpeg.org/project/ffmpeg/patch/PAXP193MB12624C21AE412BE95BA4D4A4B6F09@PAXP193MB1262.EURP193.PROD.OUTLOOK.COM/
- https://lists.debian.org/debian-lts-announce/2021/08/msg00018.html
- https://www.debian.org/security/2021/dsa-4990
- https://www.debian.org/security/2021/dsa-4998