Unrated severityNVD Advisory· Published Dec 13, 2023· Updated Feb 13, 2025

TCP spoofing vulnerability in pf(4)

CVE-2023-6534

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.

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Affected products

FreeBSD/FreeBSDllm-fuzzy2 versions
<14-RELEASE-p2, <13.2-RELEASE-p7, <12.4-RELEASE-p9+ 1 more
- (no CPE)range: <14-RELEASE-p2, <13.2-RELEASE-p7, <12.4-RELEASE-p9
- (no CPE)range: 14.0-RELEASE

Patches

Vulnerability mechanics

References

security.freebsd.org/advisories/FreeBSD-SA-23:17.pf.ascmitrevendor-advisory
security.netapp.com/advisory/ntap-20240112-0007/mitre

News mentions

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