{"id":"CVE-2023-6534","state":"PUBLISHED","title":"TCP spoofing vulnerability in pf(4)","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.","publishedAt":"2023-12-13T08:12:14.616Z","updatedAt":"2025-02-13T17:26:26.737Z","severity":null,"assigner":"freebsd","products":["FreeBSD FreeBSD"],"affected":[{"vendor":"FreeBSD","product":"FreeBSD","defaultStatus":"unknown","versions":[{"version":"14.0-RELEASE","status":"affected","lessThan":"p2","versionType":"release"},{"version":"13.2-RELEASE","status":"affected","lessThan":"p7","versionType":"release"},{"version":"12.4-RELEASE","status":"affected","lessThan":"p9","versionType":"release"}],"modules":["pf"]}],"references":["https://security.freebsd.org/advisories/FreeBSD-SA-23:17.pf.asc","https://security.netapp.com/advisory/ntap-20240112-0007/"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:42.242Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/6xxx/CVE-2023-6534.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-6534","state":"PUBLISHED","datePublished":"2023-12-13T08:12:14.616Z","dateUpdated":"2025-02-13T17:26:26.737Z","assignerShortName":"freebsd","assignerOrgId":"63664ac6-956c-4cba-a5d0-f46076e16109","dateReserved":"2023-12-05T19:03:31.535Z"},"containers":{"cna":{"title":"TCP spoofing vulnerability in pf(4)","descriptions":[{"lang":"en","value":"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":[{"vendor":"FreeBSD","product":"FreeBSD","defaultStatus":"unknown","versions":[{"version":"14.0-RELEASE","status":"affected","lessThan":"p2","versionType":"release"},{"version":"13.2-RELEASE","status":"affected","lessThan":"p7","versionType":"release"},{"version":"12.4-RELEASE","status":"affected","lessThan":"p9","versionType":"release"}],"modules":["pf"]}],"references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-23:17.pf.asc","tags":["vendor-advisory"]},{"url":"https://security.netapp.com/advisory/ntap-20240112-0007/"}],"providerMetadata":{"shortName":"freebsd","orgId":"63664ac6-956c-4cba-a5d0-f46076e16109","dateUpdated":"2024-01-12T14:06:22.880Z"},"credits":[{"lang":"en","type":"finder","user":"00000000-0000-4000-9000-000000000000","value":"Yuxiang Yang, Ao Wang, Xuewei Feng, Qi Li and Ke Xu from Tsinghua University"}],"datePublic":"2023-12-05T22:00:00.000Z","source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-23:17.pf.asc","tags":["vendor-advisory","x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20240112-0007/","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T08:35:14.417Z"}}]}}}