{"schemaVersion":3,"id":"CVE-2017-11368","aliases":["MGASA-2017-0256","UBUNTU-CVE-2017-11368","DEBIAN-CVE-2017-11368","DLA-1058-1"],"status":"published","duplicateOf":null,"title":null,"description":"In MIT Kerberos 5 (aka krb5) 1.7 and later, an authenticated attacker can cause a KDC assertion failure by sending invalid S4U2Self or S4U2Proxy requests.","dates":{"published":"2017-08-09T18:00:00.000Z","modified":"2024-08-05T18:05:30.590Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"3.0","versionLabel":"v3.0","source":"NVD","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"NVD","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","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":4,"severity":"medium","vector":"AV:N/AC:L/Au:S/C:N/I:N/A:P","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Ubuntu","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","exploitability":7.2,"impact":6,"computed":true},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Debian","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","exploitability":7.2,"impact":6,"computed":true}]},"epss":{"probability":0.02397,"percentile":0.83737,"severity":"low","asOf":"2026-10-18T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-18T00:00:00.000Z","baselineScore":0.02397},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.02133,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.02397,"percentile":0.83737}],"last30":[{"date":"2026-09-18T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.02133,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.02397,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.02397,"percentile":0.83737}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-617","name":"Reachable Assertion","description":"The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/617.html"}],"affected":[{"vendor":"debian","product":"krb5","name":"krb5","label":"krb5","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/krb5","purlType":"deb","versions":[{"text":"< 1.15.1-2","noFixRecorded":false,"fixedIn":null},{"text":"< 1.10.1+dfsg-5+deb7u8","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.15.1-2 | < 1.10.1+dfsg-5+deb7u8","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"krb5","name":"krb5","label":"krb5","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/krb5","purlType":"deb","versions":[{"text":"< 1.12+dfsg-2ubuntu5.4","noFixRecorded":false,"fixedIn":null},{"text":"< 1.13.2+dfsg-5ubuntu2.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.12+dfsg-2ubuntu5.4 | < 1.13.2+dfsg-5ubuntu2.1","eol":null,"hubHref":null},{"vendor":"fedoraproject","product":"fedora","name":"fedora","label":"fedora","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"25","noFixRecorded":false,"fixedIn":null},{"text":"26","noFixRecorded":false,"fixedIn":null}],"versionsText":"25 | 26","eol":{"isEol":true,"eolDate":"2017-12-12T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"25","label":"25","eolFrom":"2017-12-12T00:00:00.000Z","isLts":false,"isMaintained":false,"latestVersion":null},"product":{"name":"fedora","label":"Fedora Linux","category":"os"}},"hubHref":"/vendor/fedoraproject/fedora"},{"vendor":"mageia","product":"krb5","name":"krb5","label":"krb5","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/krb5","purlType":"rpm","versions":[{"text":"< 1.12.5-1.2.mga5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.12.5-1.2.mga5","eol":null,"hubHref":null},{"vendor":"mageia","product":"krb5","name":"krb5","label":"krb5","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/krb5","purlType":"rpm","versions":[{"text":"< 1.15.1-2.1.mga6","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.15.1-2.1.mga6","eol":null,"hubHref":null},{"vendor":"mit","product":"kerberos","name":"kerberos","label":"kerberos","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"5-1.13.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"5-1.13.7","eol":null,"hubHref":"/vendor/mit/kerberos"},{"vendor":"mit","product":"kerberos_5","name":"kerberos 5","label":"kerberos_5","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"1.7","noFixRecorded":false,"fixedIn":null},{"text":"1.7.1","noFixRecorded":false,"fixedIn":null},{"text":"1.8","noFixRecorded":false,"fixedIn":null},{"text":"1.8.1","noFixRecorded":false,"fixedIn":null},{"text":"1.8.2","noFixRecorded":false,"fixedIn":null},{"text":"1.8.3","noFixRecorded":false,"fixedIn":null},{"text":"1.8.4","noFixRecorded":false,"fixedIn":null},{"text":"1.8.5","noFixRecorded":false,"fixedIn":null},{"text":"1.8.6","noFixRecorded":false,"fixedIn":null},{"text":"1.9","noFixRecorded":false,"fixedIn":null},{"text":"1.9.1","noFixRecorded":false,"fixedIn":null},{"text":"1.9.2","noFixRecorded":false,"fixedIn":null},{"text":"1.9.3","noFixRecorded":false,"fixedIn":null},{"text":"1.9.4","noFixRecorded":false,"fixedIn":null},{"text":"1.10","noFixRecorded":false,"fixedIn":null},{"text":"1.10.1","noFixRecorded":false,"fixedIn":null},{"text":"1.10.2","noFixRecorded":false,"fixedIn":null},{"text":"1.10.3","noFixRecorded":false,"fixedIn":null},{"text":"1.10.4","noFixRecorded":false,"fixedIn":null},{"text":"1.1.1","noFixRecorded":false,"fixedIn":null},{"text":"1.11.1","noFixRecorded":false,"fixedIn":null},{"text":"1.11.2","noFixRecorded":false,"fixedIn":null},{"text":"1.11.3","noFixRecorded":false,"fixedIn":null},{"text":"1.11.4","noFixRecorded":false,"fixedIn":null},{"text":"1.11.5","noFixRecorded":false,"fixedIn":null},{"text":"1.12","noFixRecorded":false,"fixedIn":null},{"text":"1.12.1","noFixRecorded":false,"fixedIn":null},{"text":"1.12.2","noFixRecorded":false,"fixedIn":null},{"text":"1.12.3","noFixRecorded":false,"fixedIn":null},{"text":"1.13","noFixRecorded":false,"fixedIn":null},{"text":"1.13.1","noFixRecorded":false,"fixedIn":null},{"text":"1.13.2","noFixRecorded":false,"fixedIn":null},{"text":"1.13.3","noFixRecorded":false,"fixedIn":null},{"text":"1.13.5","noFixRecorded":false,"fixedIn":null},{"text":"1.13.6","noFixRecorded":false,"fixedIn":null},{"text":"1.14","noFixRecorded":false,"fixedIn":null},{"text":"1.14:alpha1","noFixRecorded":false,"fixedIn":null},{"text":"1.14:beta1","noFixRecorded":false,"fixedIn":null},{"text":"1.14:beta2","noFixRecorded":false,"fixedIn":null},{"text":"1.14.1","noFixRecorded":false,"fixedIn":null},{"text":"1.14.2","noFixRecorded":false,"fixedIn":null},{"text":"1.14.3","noFixRecorded":false,"fixedIn":null},{"text":"1.14.4","noFixRecorded":false,"fixedIn":null},{"text":"1.14.5","noFixRecorded":false,"fixedIn":null},{"text":"1.15","noFixRecorded":false,"fixedIn":null},{"text":"1.15.1","noFixRecorded":false,"fixedIn":null},{"text":"1.15.1:beta1","noFixRecorded":false,"fixedIn":null},{"text":"1.15.1:beta2","noFixRecorded":false,"fixedIn":null}],"versionsText":"1.7 | 1.7.1 | 1.8 | 1.8.1 | 1.8.2 | 1.8.3 | 1.8.4 | 1.8.5 | 1.8.6 | 1.9 | 1.9.1 | 1.9.2 | 1.9.3 | 1.9.4 | 1.10 | 1.10.1 | 1.10.2 | 1.10.3 | 1.10.4 | 1.1.1 | 1.11.1 | 1.11.2 | 1.11.3 | 1.11.4 | 1.11.5 | 1.12 | 1.12.1 | 1.12.2 | 1.12.3 | 1.13 | 1.13.1 | 1.13.2 | 1.13.3 | 1.13.5 | 1.13.6 | 1.14 | 1.14:alpha1 | 1.14:beta1 | 1.14:beta2 | 1.14.1 | 1.14.2 | 1.14.3 | 1.14.4 | 1.14.5 | 1.15 | 1.15.1 | 1.15.1:beta1 | 1.15.1:beta2","eol":null,"hubHref":"/vendor/mit/kerberos_5"}],"affectedCount":7,"eol":{"hasEol":true,"count":1},"references":[{"url":"https://github.com/krb5/krb5/commit/ffb35baac6981f9e8914f8f3bffd37f284b85970","label":"github.com/krb5/krb5/commit/ffb35baac6981f9e8914f8f3bffd37f284b85970","hostname":"github.com","tags":["X Refsource CONFIRM","Patch","Third Party Advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4HNWXM6OQU7G23MG7XWIOBRGP43ECLDT/","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["Vendor Advisory","X Refsource FEDORA"]},{"url":"https://access.redhat.com/errata/RHSA-2018:0666","label":"access.redhat.com/errata/RHSA-2018:0666","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"http://www.securityfocus.com/bid/100291","label":"www.securityfocus.com/bid/100291","hostname":"www.securityfocus.com","tags":["VDB Entry","X Refsource BID","Third Party Advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UBUTXMNZWMVJLQ4NDX5OQFPUVCJRLV3W/","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["Vendor Advisory","X Refsource FEDORA"]},{"url":"https://advisories.mageia.org/MGASA-2017-0256.html","label":"advisories.mageia.org/MGASA-2017-0256.html","hostname":"advisories.mageia.org","tags":["Advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=21369","label":"bugs.mageia.org/show_bug.cgi?id=21369","hostname":"bugs.mageia.org","tags":["REPORT"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/4HNWXM6OQU7G23MG7XWIOBRGP43ECLDT/","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["WEB"]},{"url":"https://ubuntu.com/security/CVE-2017-11368","label":"ubuntu.com/security/CVE-2017-11368","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://github.com/krb5/krb5/pull/678/files","label":"github.com/krb5/krb5/pull/678/files","hostname":"github.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-11368","label":"www.cve.org/CVERecord?id=CVE-2017-11368","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2017-11368","label":"security-tracker.debian.org/tracker/CVE-2017-11368","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2024:10899-1","RHSA-2018:0666"],"duplicates":[],"related":["OPENSUSE-SU-2024:10899-1"]},"timeline":[{"kind":"published","date":"2017-08-09T18:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-05T18:05:30.590Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":26,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T08:29:45.526Z","stale":false,"partial":false}}