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Vulnerability DatabaseCVE-2021-33929
CVE-2021-33929:
NixOS vulnerability analysis and mitigation
Overview
CVE-2021-33929 affects libsolv versions before 0.7.17, specifically impacting the pool_disabled_solvable function in src/repo.h. The vulnerability was discovered in 2021 and involves a buffer overflow condition that could lead to a Denial of Service (NVD, Red Hat).
Technical details
The vulnerability is classified as a heap-based buffer overflow in the pool_disabled_solvable function. The issue occurs when the index value 'id>>3' becomes larger than pool->considered->size, leading to a buffer overflow condition. The vulnerability has received a CVSS v3.1 base score of 7.5 (HIGH) with vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (NVD).
Impact
When exploited, this vulnerability can cause a Denial of Service condition in affected systems. The impact is primarily focused on system availability, with no direct impact on confidentiality or integrity (NVD).
Mitigation and workarounds
The primary mitigation is to upgrade libsolv to version 0.7.17 or later. Red Hat has released security updates to address this vulnerability in affected products (Red Hat Advisory).
Additional resources
Source: This report was generated using AI
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