CVE-2023-31130

MEDIUM EPSS 25.1%
Published May 25, 20233y ago · Modified Jun 17, 20262w ago
6.4 CVSS 3.1
Medium
Find Similar
Published May 25, 2023 3y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
6.4
Exploitability
0.5
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity High
Privileges Required High
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
25.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-124
CWE-787 Out-of-bounds Write Memory Safety

Affected Products 5

VendorProductVersionRange
c-ares_projectc-ares* <1.19.1
fedoraprojectfedora37any
fedoraprojectfedora38any
debiandebian_linux10.0any
debiandebian_linux11.0any

References 8

  • github.com https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1
    Release Notes
  • github.com https://github.com/c-ares/c-ares/security/advisories/GHSA-x6mf-cxr9-8q6v
    Third Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2023/06/msg00034.html
    Mailing List
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B5Z5XFNXTNPTCBBVXFDNZQVLLIE6VRBY/
    Mailing ListThird Party Advisory
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBFWILTA33LOSV23P44FGTQQIDRJHIY7/
    Mailing ListThird Party Advisory
  • security.gentoo.org https://security.gentoo.org/glsa/202310-09
    Third Party Advisory
  • security.netapp.com https://security.netapp.com/advisory/ntap-20240605-0005/
  • debian.org https://www.debian.org/security/2023/dsa-5419
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.