CVE-2023-6534

TCP spoofing vulnerability in pf(4)

EPSS 0.7%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.7%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

13 Dec 2023Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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 products

FreeBSD · FreeBSD

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References

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