CVE-2023-32067

HIGH EPSS 72.4%
Published May 25, 20233y ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published May 25, 2023 3y ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
72.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-400 Uncontrolled Resource Consumption Resource Mgmt

Affected Products 5

VendorProductVersionRange
c-ares_projectc-ares* <1.19.1
fedoraprojectfedora37any
fedoraprojectfedora38any
debiandebian_linux10.0any
debiandebian_linux11.0any

References 8

  • github.com https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1
    Release Notes
  • github.com https://github.com/c-ares/c-ares/security/advisories/GHSA-9g78-jv2r-p7vc
    Third Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2023/06/msg00034.html
    Mailing List
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B5Z5XFNXTNPTCBBVXFDNZQVLLIE6VRBY/
    Mailing ListThird Party Advisory
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBFWILTA33LOSV23P44FGTQQIDRJHIY7/
    Mailing ListThird Party Advisory
  • security.gentoo.org https://security.gentoo.org/glsa/202310-09
    Third Party Advisory
  • security.netapp.com https://security.netapp.com/advisory/ntap-20240605-0004/
  • debian.org https://www.debian.org/security/2023/dsa-5419
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.