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Vulnerability DatabaseCVE-2021-25804
CVE-2021-25804:
VLC media player vulnerability analysis and mitigation
Overview
A NULL-pointer dereference vulnerability was discovered in the 'Open' function within avi.c of VideoLAN VLC Media Player 3.0.11. This security flaw was assigned CVE-2021-25804 and was reported by Zhen Zhou from NSFOCUS Security Team (VLC Commit).
Technical details
The vulnerability stems from an invalid dereference where the stored track index might not match the one at parsing time when processing AVI video files (VLC Commit). This issue affects the AVI demuxer component of VLC Media Player version 3.0.11.
Impact
When exploited, this vulnerability can lead to a denial of service (DoS) condition in the application. If a user is tricked into opening a crafted AVI video file, a remote attacker could potentially cause VLC to crash (Ubuntu Notice).
Mitigation and workarounds
The vulnerability has been fixed in subsequent releases of VLC Media Player. Various Linux distributions have released security updates to address this issue: Ubuntu has released updates for multiple versions, Debian has fixed the issue in versions 3.0.21-0+deb11u1 for bullseye and 3.0.21-0+deb12u1 for bookworm (Debian Tracker).
Additional resources
Source: This report was generated using AI
Related VLC media player vulnerabilities:
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