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Vulnerability DatabaseCVE-2022-0667
CVE-2022-0667:
NixOS vulnerability analysis and mitigation
Overview
CVE-2022-0667 is a vulnerability discovered in BIND (Berkeley Internet Name Domain) version 9.18.0. The vulnerability was identified on February 17, 2022, and was assigned by the Internet Systems Consortium (ISC). When triggered, this vulnerability causes the BIND process to exit unexpectedly (CVE Details).
Technical details
The vulnerability stems from an assertion check flaw in BIND, specifically related to a refactoration of recursive client code that introduced a 'backstop lifetime timer'. The vulnerability has been assigned a CVSS score of 7.5 (HIGH) with a vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (NetApp Advisory).
Impact
When successfully exploited, this vulnerability leads to a Denial of Service (DoS) condition as the BIND process will terminate unexpectedly. This can cause disruption to DNS services running on affected systems (NetApp Advisory).
Mitigation and workarounds
Various vendors have released patches to address this vulnerability. For instance, Debian has fixed this in multiple versions including 1:9.16.50-1~deb11u3 for bullseye and 1:9.18.33-1~deb12u2 for bookworm (Debian Tracker).
Additional resources
Source: This report was generated using AI
Related NixOS vulnerabilities:
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