CVE-2023-32067 Information

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.

Reference

https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1 https://github.com/c-ares/c-ares/security/advisories/GHSA-9g78-jv2r-p7vc