CVE-2023-32067

Advisory lineage Upstream: 0 Downstream: 29
Modified
Published: 25 May 2023, 22:49
Last modified:13 Feb 2025, 16:50

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.1 (cve.org)
EPSS Score
0.34% LOW
0% probability -0.04%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

25 May 2023, 22:49
Published
Vulnerability first disclosed
13 Feb 2025, 16:50
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.34%• Percentile: 57%

Techniques & Countermeasures

  • CWE-400•Uncontrolled Resource Consumption

    The product does not properly control the allocation and maintenance of a limited resource.

Affected Systems

  • c-ares_project•c-ares

    < 1.19.1

  • c-ares•c-ares

    < 1.19.1

  • debian•debian_linux

    10.0 | 11.0

  • fedoraproject•fedora

    37 | 38

References (8)