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Vulnerability DatabaseCVE-2023-46929

CVE-2023-46929: 
NixOS vulnerability analysis and mitigation

Overview

An issue was discovered in GPAC 2.3-DEV-rev605-gfc9e29089-master affecting the MP4Box component, specifically in the gf_avc_change_vui function located at /afltest/gpac/src/media_tools/av_parsers.c:6872:55. The vulnerability was disclosed on January 3, 2024, and has been assigned a CVSS v3.1 base score of 7.5 (HIGH) (NVD).

Technical details

The vulnerability exists in the gf_avc_change_vui function of the MP4Box component. When processing certain inputs, the function attempts to read from an invalid memory address (0x000000000008), which points to the zero page, resulting in a segmentation fault. The issue has been confirmed through AddressSanitizer testing (GitHub Issue).

Impact

The vulnerability allows attackers to crash the application through a segmentation fault, potentially leading to denial of service. The CVSS score of 7.5 indicates a high severity with network vector, low attack complexity, and no required privileges or user interaction (NVD).

Mitigation and workarounds

A fix has been implemented by adding a null guard check in the gf_avc_change_vui function. The patch is available in commit 4248def5d24325aeb0e35cacde3d56c9411816a6 (GitHub Patch).

Additional resources

Source: This report was generated using AI

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