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FreeBSD: VID-9CBBC506-93C1-11EE-8E38-002590C1F29C (CVE-2023-6534): FreeBSD -- TCP spoofing vulnerability in pf(4)

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FreeBSD: VID-9CBBC506-93C1-11EE-8E38-002590C1F29C (CVE-2023-6534): FreeBSD -- TCP spoofing vulnerability in pf(4)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
12/05/2023
Created
12/20/2023
Added
12/14/2023
Modified
12/22/2023

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.

Solution(s)

  • freebsd-upgrade-base-12_4-release-p6
  • freebsd-upgrade-base-13_2-release-p4
  • freebsd-upgrade-base-14_0-release-p2

References

  • CVE-2023-6534

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