VULNERABILITY INTELLIGENCE
CVE-2023-32067
CVSS score7.5 HIGH
EPSS probability1.56%
CISA KEVNot currently listed
Published2023-05-25
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.
Weakness classification
- security-advisories@github.com: CWE-400
- nvd@nist.gov: NVD-CWE-noinfo
Primary references
- security-advisories@github.com — Release Notes
- security-advisories@github.com — Third Party Advisory
- security-advisories@github.com — Mailing List
- security-advisories@github.com — Mailing List, Third Party Advisory
- security-advisories@github.com — Mailing List, Third Party Advisory
- security-advisories@github.com — Third Party Advisory
- security-advisories@github.com
- security-advisories@github.com — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Release Notes
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Mailing List
- af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory