Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| C-Ares Project | C-Ares | < 1.19.1 |
| Fedoraproject | Fedora | 37 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
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-9g78-jv2r-p7vcThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00034.htmlMailing List
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202310-09Third Party Advisory
- https://security.netapp.com/advisory/ntap-20240605-0004/
- 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-9g78-jv2r-p7vcThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00034.htmlMailing List
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202310-09Third Party Advisory
- https://security.netapp.com/advisory/ntap-20240605-0004/
FAQ
What is CVE-2023-32067?
CVE-2023-32067 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 the...
How severe is CVE-2023-32067?
CVE-2023-32067 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-32067?
Check the references section above for vendor advisories and patch information. Affected products include: C-Ares Project C-Ares, Fedoraproject Fedora, Debian Debian Linux.