CVEvulnerability

CVE-2024-25629

5.5 MEDIUM Published 2024-02-23 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2024-02-23
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.4 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-125, CWE-127

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.

Affected configurations

• c-ares c-ares (< 1.27.0) • fedoraproject fedora 38 • fedoraproject fedora 39 • fedoraproject fedora 40

Related

Weakness · CWE (2)

  • CWE-125 Out-of-bounds Read weakness
  • CWE-127 Buffer Under-read weakness

References