What is CVE-2023-27567?

CVE-2023-27567 is a high-severity vulnerability in Openbsd, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2023-03-03.

How severe is CVE-2023-27567?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Openbsd

CVE-2023-27567

In OpenBSD 7.2, a TCP packet with destination port 0 that matches a pf divert-to rule can crash the kernel.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.008 (51.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Openbsd — versions 7.2
N/a — versions n/a

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

cve@mitre.org (Patch)
cve@mitre.org
cve@mitre.org

Frequently asked questions

What is CVE-2023-27567?: CVE-2023-27567 is a high-severity vulnerability in Openbsd, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2023-03-03.
How severe is CVE-2023-27567?: High severity. CVSS v3 base score is 7.5 out of 10.