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Vulnerability DatabaseCVE-2021-4110
CVE-2021-4110:
NixOS vulnerability analysis and mitigation
Overview
A NULL Pointer Dereference vulnerability was identified in mruby, tracked as CVE-2021-4110. The vulnerability was discovered and disclosed on December 15, 2021. This security flaw affects mruby versions up to (excluding) 3.1 (NVD).
Technical details
The vulnerability is classified as a NULL Pointer Dereference (CWE-476). It received a CVSS v3.1 base score of 7.5 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, indicating that it is network-accessible, requires low attack complexity, needs no privileges or user interaction, and can cause high availability impact (NVD).
Impact
The vulnerability primarily affects system availability. With a CVSS score indicating high availability impact but no impact on confidentiality or integrity, successful exploitation could lead to service disruption through application crashes (Ubuntu).
Mitigation and workarounds
A fix has been implemented through a patch that adds the mrb_state argument to mrb_proc_copy() function. The patch is available in mruby version 3.1 and later. Users are advised to upgrade to the fixed version (GitHub Patch).
Additional resources
Source: This report was generated using AI
Related NixOS vulnerabilities:
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