CVE-2021-0995
NixOS vulnerability analysis and mitigation

Overview

CVE-2021-0995 was disclosed in December 2021 as part of the Android Security Bulletin. The vulnerability affected Mozilla Thunderbird email client, specifically version 78.9.0 and earlier versions (Red Hat Advisory).

Technical details

The vulnerability was part of a security update for Mozilla Thunderbird that addressed multiple security issues. The update included fixes for texture upload into an unbound backing buffer that resulted in an out-of-bound read (CVE-2021-23981) and other memory safety bugs (Red Hat Advisory).

Impact

The vulnerability affected Red Hat Enterprise Linux 8.1 Extended Update Support systems, including versions for x86_64 and Power LE architectures, as well as Update Services for SAP Solutions (Red Hat Advisory).

Mitigation and workarounds

The vulnerability was addressed through an update to Thunderbird version 78.9.0. Users were advised to update their systems and restart all running instances of Thunderbird for the update to take effect (Red Hat Advisory).

Additional resources


SourceThis report was generated using AI

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