CVE-2025-0247
NixOS vulnerability analysis and mitigation

Overview

Memory safety bugs were identified in Firefox 133 and Thunderbird 133 (CVE-2025-0247), discovered by Akmat Suleimanov, Jed Davis, André Bargull, and the Mozilla Fuzzing Team. The vulnerability was disclosed on January 7, 2025, affecting Firefox versions below 134 and Thunderbird versions below 134 (Mozilla Advisory, NVD).

Technical details

The vulnerability involves memory safety bugs that showed evidence of memory corruption. The issue has been assigned a CVSS v3.1 base score of 9.8 (CRITICAL) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating a critical severity level (NVD).

Impact

These memory safety bugs showed evidence of memory corruption and could potentially be exploited to run arbitrary code on affected systems. The vulnerability affects both Firefox and Thunderbird applications, potentially allowing attackers to execute malicious code if successfully exploited (Mozilla Advisory).

Mitigation and workarounds

Mozilla has addressed these vulnerabilities in Firefox 134 and Thunderbird 134. Users are strongly advised to update their installations to these latest versions to protect against potential exploitation (Mozilla Advisory).

Additional resources


SourceThis report was generated using AI

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