CVE-2023-32067
moderate-risk
Published 2023-05-25
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.
Do I need to act?
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0.41% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10
High
NETWORK
/ LOW complexity
Affected Products (5)
Affected Vendors
References (16)
Third Party Advisory
https://github.com/c-ares/c-ares/security/advisories/GHSA-9g78-jv2r-p7vc
Third Party Advisory
https://security.gentoo.org/glsa/202310-09
Third Party Advisory
https://www.debian.org/security/2023/dsa-5419
Third Party Advisory
https://github.com/c-ares/c-ares/security/advisories/GHSA-9g78-jv2r-p7vc
Third Party Advisory
https://security.gentoo.org/glsa/202310-09
Third Party Advisory
https://www.debian.org/security/2023/dsa-5419
40
/ 100
moderate-risk
Severity
26/34 · High
Exploitability
2/34 · Minimal
Exposure
12/34 · Low