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Vulnerability DatabaseCVE-2021-33460

CVE-2021-33460: 
NixOS vulnerability analysis and mitigation

Overview

A NULL pointer dereference vulnerability was discovered in YASM version 1.3.0, identified as CVE-2021-33460. The vulnerability exists in the if_condition() function within the modules/preprocs/nasm/nasm-pp.c file (NVD, GitHub Issue).

Technical details

The vulnerability is classified as a NULL pointer dereference issue with a CVSS v3.1 Base Score of 5.5 (MEDIUM), with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H. The issue occurs specifically in the if_condition() function within the NASM preprocessor component of YASM (NVD).

Impact

The vulnerability can lead to a denial of service condition through application crash when processing specially crafted input files. The CVSS scoring indicates that while the vulnerability doesn't impact confidentiality or integrity, it can have a high impact on availability (NVD).

Exploitability

The vulnerability requires local access and user interaction to exploit. An attacker would need to convince a user to process a specially crafted file with the affected YASM version (GitHub Issue).

Mitigation and workarounds

Users should upgrade to a patched version of YASM when available. The vulnerability affects version 1.3.0 of the software (NVD).

Additional resources

Source: This report was generated using AI

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