{"id":"CVE-2016-3120","url":"https://www.cyber-defence.io/tools/cve/CVE-2016-3120","generatedAt":"2026-10-28T04:16:05.140Z","title":"The validate_as_request function in kdc_util.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.13.6 and 1.4.x before 1.14.3, when restrict_anonymous_to_tgt is enabled, uses an incorrect client data structure, which allows…","description":"The validate_as_request function in kdc_util.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.13.6 and 1.4.x before 1.14.3, when restrict_anonymous_to_tgt is enabled, uses an incorrect client data structure, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via an S4U2Self request.","published":"2016-08-01T02:59:12.000Z","lastModified":"2026-06-17T00:45:01.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-476"],"affected":["mit/kerberos 5"],"epss":{"score":0.0462,"percentile":0.91647,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (4.62%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://krbdev.mit.edu/rt/Ticket/Display.html?id=8458","tags":["Issue Tracking"],"source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-updates/2016-09/msg00035.html","source":"cve@mitre.org"},{"url":"http://rhn.redhat.com/errata/RHSA-2016-2591.html","source":"cve@mitre.org"},{"url":"http://web.mit.edu/kerberos/krb5-1.13/","source":"cve@mitre.org"},{"url":"http://web.mit.edu/kerberos/krb5-1.14/","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/92132","source":"cve@mitre.org"},{"url":"http://www.securitytracker.com/id/1036442","source":"cve@mitre.org"},{"url":"https://github.com/krb5/krb5/commit/93b4a6306a0026cf1cc31ac4bd8a49ba5d034ba7","source":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2018/01/msg00040.html","source":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AWL3KYFRJIX37EAM4DKCQQIQP2WBKL35/","source":"cve@mitre.org"},{"url":"http://krbdev.mit.edu/rt/Ticket/Display.html?id=8458","tags":["Issue Tracking"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-updates/2016-09/msg00035.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://rhn.redhat.com/errata/RHSA-2016-2591.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://web.mit.edu/kerberos/krb5-1.13/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://web.mit.edu/kerberos/krb5-1.14/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/92132","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1036442","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/krb5/krb5/commit/93b4a6306a0026cf1cc31ac4bd8a49ba5d034ba7","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2018/01/msg00040.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AWL3KYFRJIX37EAM4DKCQQIQP2WBKL35/","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-3120","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}