CVE-2023-27567

HIGH

OpenBSD 7.2 - Denial of Service via TCP Packet with Destination Port 0

Title source: llm
STIX 2.1

Description

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

References (3)

Core 3

Scores

CVSS v3 7.5
EPSS 0.0076
EPSS Percentile 50.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-400
Status published
Products (1)
openbsd/openbsd 7.2
Published Mar 03, 2023
Tracked Since Feb 18, 2026