CVE-2023-31130

MEDIUM

c-ares < 1.19.1 - Out-of-bounds Write via ares_inet_net_pton

Title source: llm

Description

c-ares is an asynchronous resolver library. ares_inet_net_pton() is vulnerable to a buffer underflow for certain ipv6 addresses, in particular "0::00:00:00/2" was found to cause an issue. C-ares only uses this function internally for configuration purposes which would require an administrator to configure such an address via ares_set_sortlist(). However, users may externally use ares_inet_net_pton() for other purposes and thus be vulnerable to more severe issues. This issue has been fixed in 1.19.1.

References (8)

Core 8

Core References

Mailing List

https://lists.debian.org/debian-lts-announce/2023/06/msg00034.html

Mailing List, Third Party Advisory

https://lists.fedoraproject.org/archives/list/[email protected]/message/B5Z5XFNXTNPTCBBVXFDNZQVLLIE6VRBY/

Mailing List, Third Party Advisory

https://lists.fedoraproject.org/archives/list/[email protected]/message/UBFWILTA33LOSV23P44FGTQQIDRJHIY7/

Third Party Advisory

https://security.gentoo.org/glsa/202310-09

Third Party Advisory

https://www.debian.org/security/2023/dsa-5419

Vendor Advisory

https://security.netapp.com/advisory/ntap-20240605-0005/

Third Party Advisory x_refsource_confirm

https://github.com/c-ares/c-ares/security/advisories/GHSA-x6mf-cxr9-8q6v

Release Notes x_refsource_misc

https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1

Scores

CVSS v3 4.1

EPSS 0.0001

EPSS Percentile 1.9%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-787 CWE-124

Status published

Products (5)

c-ares_project/c-ares < 1.19.1

debian/debian_linux 10.0

debian/debian_linux 11.0

fedoraproject/fedora 37

fedoraproject/fedora 38

Published May 25, 2023

Tracked Since Feb 18, 2026