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CVE-2024-25629

Public on 2024-02-23
Modified on 2024-02-23
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.

Severity
Medium
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CVSS v3 Base Score
4.4
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Core c-ares 2024-03-13 20:26 ALAS2-2024-2494
Amazon Linux 2023 c-ares 2024-03-13 20:41 ALAS2023-2024-563
Amazon Linux 2023 nodejs 2024-03-13 20:41 ALAS2023-2024-568
Amazon Linux 2023 nodejs20 2024-03-13 20:41 ALAS2023-2024-562

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
NVD CVSSv3 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

References

Red Hat: CVE-2024-25629 Mitre: CVE-2024-25629 FAQs regarding Amazon Linux ALAS/CVE Severity