CVE-2021-33362
NixOS vulnerability analysis and mitigation

Overview

A stack buffer overflow vulnerability was identified in the hevcparsevps_extension function within MP4Box component of GPAC 1.0.1. This vulnerability was assigned CVE-2021-33362 and was discovered in May 2021 (MITRE, NVD).

Technical details

The vulnerability exists in the hevcparsevps_extension function within the MP4Box component of GPAC 1.0.1. The issue occurs when processing HEVC (High Efficiency Video Coding) video parameters sets, specifically when handling output layer sets that exceed the maximum supported layers (GPAC Commit).

Impact

When successfully exploited, this vulnerability allows attackers to cause a denial of service condition or potentially execute arbitrary code through a specially crafted file (NVD).

Mitigation and workarounds

The vulnerability was patched in GPAC through commit 1273cdc706eeedf8346d4b9faa5b33435056061d, which added a check for the maximum number of output layer sets and proper error handling (GPAC Commit).

Additional resources


SourceThis report was generated using AI

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