CVE-2024-25629

CVSS 3.1 Score 4.4 of 10 (medium)

Details

Published Feb 23, 2024
Updated: Apr 19, 2024
CWE ID 127

Summary

CVE-2024-25629 is a vulnerability affecting the c-ares library, a C library for handling asynchronous DNS requests. The issue lies in the function `ares__read_line()`, which is responsible for parsing local configuration files such as `/etc/resolv.conf`, `/etc/nsswitch.conf`, and `HOSTALIASES`. If any of these files contain a `NULL` character as the first character on a new line, `ares__read_line()` may try to read memory outside of the intended buffer, potentially leading to a crash. This vulnerability has been addressed in c-ares version 1.27.0. Unfortunately, there are currently no known workarounds to mitigate this issue.

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