CVE-2023-31130
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.
Does this matter?
Lower severity and a low EPSS score (0.39%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 6.4 MEDIUMCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.39% probability · 32th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-124, CWE-787
- Affected
- c-ares project/c-ares · fedoraproject/fedora · debian/debian linux
- Source
- security-advisories@github.com
References
- https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1Release Notes
- https://github.com/c-ares/c-ares/security/advisories/GHSA-x6mf-cxr9-8q6vThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00034.htmlMailing List
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B5Z5XFNXTNPTCBBVXFDNZQVLLIE6VRBY/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBFWILTA33LOSV23P44FGTQQIDRJHIY7/Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202310-09Third Party Advisory
- https://security.netapp.com/advisory/ntap-20240605-0005/
- https://www.debian.org/security/2023/dsa-5419Third Party Advisory
- https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1Release Notes
- https://github.com/c-ares/c-ares/security/advisories/GHSA-x6mf-cxr9-8q6vThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00034.htmlMailing List
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B5Z5XFNXTNPTCBBVXFDNZQVLLIE6VRBY/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBFWILTA33LOSV23P44FGTQQIDRJHIY7/Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202310-09Third Party Advisory
- https://security.netapp.com/advisory/ntap-20240605-0005/
- https://www.debian.org/security/2023/dsa-5419Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.