CVSS 3.1 Score 4.4 of 10 (medium)


Published Feb 23, 2024
CWE ID 127


CVE-2024-25629 is a vulnerability in the c-ares C library for asynchronous DNS requests. If using a c-ares version prior to 1.27.0, certain configuration files, such as /etc/resolv.conf, /etc/nsswitch.conf, and /etc/hosts, can trigger a crash if they have an embedded NULL character as the first character in a new line. This vulnerability can lead to reading memory prior to the start of the given buffer. The issue has been fixed in c-ares 1.27.0, and there are no known workarounds. The vulnerability has a base severity of MEDIUM with high privileges required and no user interaction needed. It has a CVSSv3 score of 4.4 and may pose a potential danger to organizations, especially if an attacker can exploit it locally, as it can result in availability impact and crashing of affected systems.

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