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CVE-2023-31130

nvd nist
Published: May 25, 2023Modified: Jun 17, 2026

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6.4
Vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Exploitability: 0.5 / Impact: 5.9
Source: NVD

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.

Affected (5)

C Ares Project
1 product
C Ares
Fedoraproject
1 product
Fedora
Debian
1 product
Debian Linux
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
C Ares
Before 1.19.1
Configuration B
2 vulnerable
Vulnerable SoftwareAffected Versions
Fedoraproject
Fedora
Version 37
Fedora
Version 38
Configuration C
2 vulnerable
Vulnerable SoftwareAffected Versions
Debian
Debian Linux
Version 10.0
Debian Linux
Version 11.0

Related CWEs

CWE-124
Buffer Underwrite ('Buffer Underflow')
The product writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer.
CWE-787
Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.

References (16)

Source: security-advisories@github.com
Release Notes
Source: security-advisories@github.com
Third Party Advisory
Source: security-advisories@github.com
Mailing List
Source: security-advisories@github.com
Mailing ListThird Party Advisory
Source: security-advisories@github.com
Mailing ListThird Party Advisory
Source: security-advisories@github.com
Third Party Advisory
Source: security-advisories@github.com
Source: security-advisories@github.com
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

Timeline

No history available yet.