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OpenAdvisories
Medium USN-6676-1 1 CVE

c-ares vulnerability

Published Mar 6, 2024 · Updated Jun 25, 2026

Ecosystem: Ubuntu

Summary

Vojtěch Vobr discovered that c-ares incorrectly handled user input from
local configuration files. An attacker could possibly use this issue to
cause a denial of service via application crash.

Fixed packages 4

ReleasePackageFixed in
Ubuntu · 20.04 LTS 20.04:LTS c-ares 1.15.0-1ubuntu0.5
Ubuntu · 22.04 LTS 22.04:LTS c-ares 1.18.1-1ubuntu0.22.04.3
Ubuntu · Pro 16.04 LTS Pro:16.04:LTS c-ares 1.10.0-3ubuntu0.2+esm3
Ubuntu · Pro 18.04 LTS Pro:18.04:LTS c-ares 1.14.0-1ubuntu0.2+esm2

Vulnerabilities 1

  • Medium 4.4
    CVE-2024-25629

    c-ares out of bounds read in ares__read_line()

    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.…

    c-ares c-ares nodejs nodejs18 Debian Ubuntu Azure Linux Alpine Wolfi

References

  • report
    https://ubuntu.com/security/CVE-2024-25629