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Vulnerability DatabaseCVE-2021-33464
CVE-2021-33464:
NixOS vulnerability analysis and mitigation
Overview
An issue was discovered in yasm version 1.3.0. There is a heap-buffer-overflow vulnerability in inc_fopen() function located in modules/preprocs/nasm/nasm-pp.c (NVD, Debian Tracker).
Technical details
The vulnerability exists in the inc_fopen() function within the NASM preprocessor module (modules/preprocs/nasm/nasm-pp.c). When triggered, it causes a heap buffer overflow during string concatenation operations. The issue was identified through AddressSanitizer which detected a WRITE operation of size 23 bytes beyond the allocated buffer region of 26 bytes (GitHub Issue).
Impact
The heap buffer overflow vulnerability could potentially lead to memory corruption and program crashes, resulting in denial of service conditions. The issue affects multiple Debian releases including bullseye, bookworm, and sid/trixie, where the package remains vulnerable (Debian Tracker).
Mitigation and workarounds
As of the latest reports, the vulnerability remains unfixed in the affected versions. The issue has been reported to the upstream maintainers but no official patch has been released (Debian Tracker).
Additional resources
Source: This report was generated using AI
Related NixOS vulnerabilities:
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