CVE-2024-25629 | BDVDB-2026-225518 Detail
c-aresc-ares
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.
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: local.
Weaknesses#
- CWE-127 Buffer Under-read
References#
- https://github.com/c-ares/c-ares/security/advisories/GHSA-mg26-v6qh-x48q
- https://github.com/c-ares/c-ares/commit/a804c04ddc8245fc8adf0e92368709639125e183
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GX37LFPFQ3T6FFMMFYQTEGIQXXN7F27U/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2P76QYINQNPEHUTEEDOUYIRZ2X6UVZ5K/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CSCMTSPDIE2UHU34TIXQQHZ6JTE3Y3VF/
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.