Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2021-42779
CVE-2021-42779:
NixOS vulnerability analysis and mitigation
Overview
A heap use after free issue was discovered in OpenSC before version 0.22.0 in scfilevalid function. The vulnerability was assigned CVE-2021-42779 and was reported through the OSS-Fuzz project (OSS Fuzz Issue). The issue was later fixed in OpenSC version 0.22.0 (OpenSC Commit).
Technical details
The vulnerability is classified as a heap use-after-free issue (CWE-416) affecting the scfilevalid function in OpenSC. The severity of this vulnerability has been rated as MEDIUM with a CVSS v3.1 Base Score of 5.3 (Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L) (NVD Database).
Impact
The vulnerability could potentially lead to application crashes when exploited. This affects the stability of applications using the OpenSC library (Debian Advisory).
Mitigation and workarounds
The vulnerability has been fixed in OpenSC version 0.22.0. Users are advised to upgrade to this version or later. Various Linux distributions have also released security updates to address this vulnerability, including Debian with version 0.21.0-1+deb11u1 and Gentoo with version 0.22.0 (Gentoo Advisory, Debian Advisory).
Additional resources
Source: This report was generated using AI
Related NixOS vulnerabilities:
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