Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2020-20891
CVE-2020-20891:
Ffmpeg vulnerability analysis and mitigation
Overview
CVE-2020-20891 is a Buffer Overflow vulnerability discovered in FFmpeg version 4.2.1, specifically in the config_input function within libavfilter/vf_gblur.c. The vulnerability was disclosed and published on September 20, 2021 (NVD).
Technical details
The vulnerability is classified as a Classic Buffer Overflow (CWE-120) with a CVSS v3.1 base score of 8.8 (HIGH). The attack vector is network-based (AV:N) with low attack complexity (AC:L), requiring no privileges (PR:N) but user interaction (UI:R). The scope is unchanged (S:U) with high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H) (NVD).
Impact
When exploited, this vulnerability allows attackers to cause a Denial of Service (DoS) or potentially achieve other unspecified impacts through a buffer overflow condition (NVD).
Mitigation and workarounds
The vulnerability has been fixed through a patch committed to the FFmpeg repository. Multiple Linux distributions have released security updates, including Debian with versions 7:4.3.7-0+deb11u1 for bullseye and 7:4.1.9-0+deb10u1 for buster (Debian Tracker).
Additional resources
Source: This report was generated using AI
Related Ffmpeg vulnerabilities:
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