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CVE-2024-25629

CVE-2024-25629 · c-ares out of bounds read in ares__read_line()

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 4.4 · Medium · EPSS 0.4% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • c-ares

    Versions
    • < 1.27.0: Affected

    No fix published

  • c-ares Debian:12

    Versions
    • 1.18.1-3
    • 1.19.0-1
    • 1.19.1-1
    • 1.19.1-2
    • 1.19.1-3
    • 1.20.0-1
    • 1.20.0-2
    • 1.20.0-3
    • 1.20.1-1
    • 1.21.0-1
    • 1.22.0-1
    • 1.22.1-1
    • 1.23.0-1
    • 1.24.0-1
    • 1.25.0-1
    • 1.26.0-1
    • 1.26.0-1.1~exp1
    • 1.27.0-1
    • 1.27.0-1.1
    • 1.27.0-1.1~exp1
    • 1.27.0-1.2
    • 1.28.1-1
    • 1.29.0-1
    • 1.30.0-1
    • 1.31.0-1
    • 1.32.2-1
    • 1.32.2-2
    • 1.32.3-1
    • 1.33.0-1
    • 1.33.1-1
    • 1.33.1-2
    • 1.34.2-1
    • 1.34.3-1
    • 1.34.4-1
    • 1.34.4-2
    • 1.34.4-2.1
    • 1.34.5-1
    • 1.34.6-1
    • 1.34.7-1
    • 1.34.8-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • c-ares Debian:13

    Affected ranges
    • ECOSYSTEM: < 1.27.0-1

    Update to 1.27.0-1

  • c-ares Debian:14

    Affected ranges
    • ECOSYSTEM: < 1.27.0-1

    Update to 1.27.0-1

  • c-ares Ubuntu:Pro:16.04:LTS

    Versions
    • 1.10.0-2
    • 1.10.0-3
    • 1.10.0-3ubuntu0.1
    • 1.10.0-3ubuntu0.2
    • 1.10.0-3ubuntu0.2+esm1
    • 1.10.0-3ubuntu0.2+esm2
    Affected ranges
    • ECOSYSTEM: < 1.10.0-3ubuntu0.2+esm3

    Update to 1.10.0-3ubuntu0.2+esm3

  • c-ares Ubuntu:Pro:18.04:LTS

    Versions
    • 1.13.0-2
    • 1.13.0-3
    • 1.14.0-1
    • 1.14.0-1ubuntu0.1
    • 1.14.0-1ubuntu0.2
    • 1.14.0-1ubuntu0.2+esm1
    Affected ranges
    • ECOSYSTEM: < 1.14.0-1ubuntu0.2+esm2

    Update to 1.14.0-1ubuntu0.2+esm2

  • c-ares Ubuntu:20.04:LTS

    Versions
    • 1.15.0-1build1
    • 1.15.0-1ubuntu0.1
    • 1.15.0-1ubuntu0.2
    • 1.15.0-1ubuntu0.3
    • 1.15.0-1ubuntu0.4
    Affected ranges
    • ECOSYSTEM: < 1.15.0-1ubuntu0.5

    Update to 1.15.0-1ubuntu0.5

  • c-ares Ubuntu:22.04:LTS

    Versions
    • 1.17.1-1ubuntu1
    • 1.18.1-1
    • 1.18.1-1build1
    • 1.18.1-1ubuntu0.22.04.1
    • 1.18.1-1ubuntu0.22.04.2
    Affected ranges
    • ECOSYSTEM: < 1.18.1-1ubuntu0.22.04.3

    Update to 1.18.1-1ubuntu0.22.04.3

Original sources

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