CVEvulnerability
CVE-2023-32067
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2023-05-25
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-400
Description
c-ares is an asynchronous resolver library. c-ares is vulnerable to denial of service. If a target resolver sends a query, the attacker forges a malformed UDP packet with a length of 0 and returns them to the target resolver. The target resolver erroneously interprets the 0 length as a graceful shutdown of the connection. This issue has been patched in version 1.19.1.
Affected configurations
• c-ares project c-ares (< 1.19.1)
• fedoraproject fedora 37
• fedoraproject fedora 38
• debian debian linux 10.0
• debian debian linux 11.0
Related
Weakness · CWE (1)
- CWE-400 Uncontrolled Resource Consumption weakness
References
- https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1 Release Notes
- https://github.com/c-ares/c-ares/security/advisories/GHSA-9g78-jv2r-p7vc Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00034.html Mailing List
- 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/ Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202310-09 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20240605-0004/ security.netapp.com
- https://www.debian.org/security/2023/dsa-5419 Third Party Advisory
- https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1 Release Notes
- https://github.com/c-ares/c-ares/security/advisories/GHSA-9g78-jv2r-p7vc Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00034.html Mailing List
- 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/ Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202310-09 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20240605-0004/ security.netapp.com
- https://www.debian.org/security/2023/dsa-5419 Third Party Advisory