CVEvulnerability

CVE-2023-6534

7.5 HIGH Published 2023-12-13 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-12-13
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

In versions of FreeBSD 14.0-RELEASE before 14-RELEASE-p2, FreeBSD 13.2-RELEASE before 13.2-RELEASE-p7 and FreeBSD 12.4-RELEASE before 12.4-RELEASE-p9, the pf(4) packet filter incorrectly validates TCP sequence numbers.  This could allow a malicious actor to execute a denial-of-service attack against hosts behind the firewall.

Affected configurations

• freebsd freebsd 12.4 • freebsd freebsd 13.2 • freebsd freebsd 14.0

References