CVE-2024-25629 Information

Description

c-ares is a C library for asynchronous DNS requests. ares__read_line() is used to parse local configuration files such as /etc/resolv.conf /etc/nsswitch.conf the HOSTALIASES file and if using a c-ares version prior to 1.27.0 the /etc/hosts file. If any of these configuration files has an embedded NULL character as the first character in a new line it can lead to attempting to read memory prior to the start of the given buffer which may result in a crash. This issue is fixed in c-ares 1.27.0. No known workarounds exist.

Reference

https://github.com/c-ares/c-ares/security/advisories/GHSA-mg26-v6qh-x48q https://github.com/c-ares/c-ares/commit/a804c04ddc8245fc8adf0e92368709639125e183