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Vulnerability DatabaseCVE-2021-38493
CVE-2021-38493:
NixOS vulnerability analysis and mitigation
Overview
Mozilla developers reported memory safety bugs present in Firefox 91 and Firefox ESR 78.13. The vulnerability, identified as CVE-2021-38493, affects Firefox ESR < 78.14, Thunderbird < 78.14, and Firefox < 92. The issue was discovered and disclosed in September 2021 (Mozilla Advisory).
Technical details
The vulnerability is classified as a memory safety bug that showed evidence of memory corruption. It has been assigned a CVSS v3.1 base score of 8.8 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. The vulnerability is categorized as CWE-787 (Out-of-bounds Write) (NVD).
Impact
The memory corruption issues could potentially be exploited to run arbitrary code on affected systems. Given enough effort, these memory safety bugs could be leveraged by attackers to execute malicious code (Mozilla Advisory).
Mitigation and workarounds
The vulnerability has been fixed in Firefox 92, Firefox ESR 78.14, and Firefox ESR 91.1. Users are advised to upgrade to these versions or later to mitigate the risk. For Thunderbird users, the fix is available in version 78.14 (Gentoo Advisory).
Additional resources
Source: This report was generated using AI
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