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CVE-2023-32067

7.5 · HIGH

c-ares is an asynchronous resolver library.

Published May 25, 2023CWE-400EPSS 1.56%

Overview

CVE-2023-32067 is a high-severity vulnerability. It was published on May 25, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/c-ares/c-ares/releases/tag/cares-1_19_1GitHubgithub.com/c-ares/c-ares/security/advisories/GHSA-9g78-jv2r-p7vcReflists.debian.org/debian-lts-announce/2023/06/msg00034.htmlReflists.fedoraproject.org/archives/list/[email protected]/message/B5Z5XFNXTNPTCBBVXFDNZQVLLIE6VRBY/Reflists.fedoraproject.org/archives/list/[email protected]/message/UBFWILTA33LOSV23P44FGTQQIDRJHIY7/Refsecurity.gentoo.org/glsa/202310-09Refsecurity.netapp.com/advisory/ntap-20240605-0004/Refwww.debian.org/security/2023/dsa-5419GitHubgithub.com/c-ares/c-ares/releases/tag/cares-1_19_1GitHubgithub.com/c-ares/c-ares/security/advisories/GHSA-9g78-jv2r-p7vc

How CyberStrike helps

Frequently asked questions

What is CVE-2023-32067?

CVE-2023-32067 is a high-severity vulnerability. It was published on May 25, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-32067?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-32067?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-32067?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-32067 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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