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Vulnerability DatabaseCVE-2023-46317
CVE-2023-46317:
Linux Debian vulnerability analysis and mitigation
Overview
Knot Resolver before version 5.7.0 contains a vulnerability that performs many TCP reconnections upon receiving certain nonsensical responses from servers (NVD, Knot Release). The vulnerability was discovered by Ivan Jedek from OryxLabs and was disclosed in August 2023.
Technical details
The vulnerability has been assigned a CVSS v3.1 base score of 7.5 HIGH with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (NVD). The issue occurs when the resolver receives nonsensical responses from remote servers, causing it to perform excessive TCP reconnections.
Impact
The vulnerability can be exploited to cause a denial of service (DoS) condition against the affected Knot Resolver installations. When triggered, the resolver will waste resources by repeatedly attempting TCP reconnections (Knot Release).
Mitigation and workarounds
The vulnerability has been fixed in Knot Resolver version 5.7.0. Users are advised to upgrade to this version or later to address the security issue (Knot Release).
Additional resources
Source: This report was generated using AI
Related Linux Debian vulnerabilities:
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