{"id":"CVE-2018-16853","aliases":["ALPINE-CVE-2018-16853","DEBIAN-CVE-2018-16853","EUVD-2018-8647","GHSA-wggh-6fmq-953v","SUSE-SU-2018:4066-1","openSUSE-SU-2024:11365-1"],"status":"published","title":"Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the...","description":"Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.03081,"percentile":0.8778,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2018-11-28T14:00:00Z","modified":"2026-10-24T10:30:18Z","fixes":[{"ecosystem":"Alpine:v3.10","package":"samba","fixed_in":["4.8.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.11","package":"samba","fixed_in":["4.8.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.12","package":"samba","fixed_in":["4.8.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.13","package":"samba","fixed_in":["4.8.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.14","package":"samba","fixed_in":["4.8.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.15","package":"samba","fixed_in":["4.8.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.16","package":"samba","fixed_in":["4.8.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.17","package":"samba","fixed_in":["4.8.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"samba","fixed_in":["4.8.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"samba","fixed_in":["4.8.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"samba","fixed_in":["4.8.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"samba","fixed_in":["4.8.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"samba","fixed_in":["4.8.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"samba","fixed_in":["4.8.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"samba","fixed_in":["4.8.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.9","package":"samba","fixed_in":["4.8.7-r0"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"samba","fixed_in":["2:4.9.2+dfsg-2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"samba","fixed_in":["2:4.9.2+dfsg-2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"samba","fixed_in":["2:4.9.2+dfsg-2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.10","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.7.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.11","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.7.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.12","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.7.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.13","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.7.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.14","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.7.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.15","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.7.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.16","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.7.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.17","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.7.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.18","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.7.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.19","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.7.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.20","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.7.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.21","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.7.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.7.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.7.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.7.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.9","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.7.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.9.2+dfsg-2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.9.2+dfsg-2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.9.2+dfsg-2"}]}]},{"source":"osv","ecosystem":"SUSE:Linux 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Entry","advisory"]},{"url":"https://security.netapp.com/advisory/ntap-20181127-0001/","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory"]},{"url":"https://security.gentoo.org/glsa/202003-52","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-16853"},{"url":"https://github.com/advisories/GHSA-wggh-6fmq-953v"},{"url":"https://security.alpinelinux.org/vuln/CVE-2018-16853","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-16853","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2018/suse-su-20184066-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1068059","tags":["report"]},{"url":"https://bugzilla.suse.com/1087303","tags":["report"]},{"url":"https://bugzilla.suse.com/1087931","tags":["report"]},{"url":"https://bugzilla.suse.com/1101499","tags":["report"]},{"url":"https://bugzilla.suse.com/1102230","tags":["report"]},{"url":"https://bugzilla.suse.com/1116319","tags":["report"]},{"url":"https://bugzilla.suse.com/1116320","tags":["report"]},{"url":"https://bugzilla.suse.com/1116322","tags":["report"]},{"url":"https://bugzilla.suse.com/1116324","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2018-14629","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-16841","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-16851","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-16853","tags":["web"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2006-1059","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2006-3403","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2007-0452","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2007-2444","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2007-2446","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2007-2447","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2007-4138","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2007-4572","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2007-5398","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2007-6015","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2008-1105","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2008-3789","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2008-4314","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2009-0022","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-2123","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-2125","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-2126","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-11103","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-12150","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-12151","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-12163","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-14746","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-15275","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-2619","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-7494","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-1050","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-1057","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-10858","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-10918","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-10919","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-1139","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-1140","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-16852","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-16857","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-16860","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-10197","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-10218","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-12435","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-12436","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-14833","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-14847","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-14861","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-14870","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-14902","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-14907","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-19344","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-3824","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-3870","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-3880","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-10700","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-10704","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-10730","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-10745","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-10760","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-14303","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-14318","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-14323","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-14383","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-1472","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-27840","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-20254","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-20277","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2018-16853","description":"Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command.","status":"published","published":"2018-11-28T14:00:00Z","modified":"2024-08-05T10:32:54.157Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:35:11.426178Z"}],"euvd":[{"id":"EUVD-2018-8647","description":"Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command.","status":"published","published":"2018-11-28T14:00:00Z","modified":"2024-08-05T10:32:54Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T02:39:40.316949Z"}],"ghsa":[{"id":"GHSA-wggh-6fmq-953v","title":"Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the...","description":"Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command.","status":"published","published":"2022-05-13T01:34:04Z","modified":"2023-02-01T05:08:39Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:50:49.403077Z"}],"nvd":[{"id":"CVE-2018-16853","description":"Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command.","status":"published","published":"2018-11-28T14:29:00.533Z","modified":"2026-06-17T01:44:54.88Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:04:48.987926Z"}],"osv":[{"id":"ALPINE-CVE-2018-16853","description":"Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command.","status":"published","published":"2018-11-28T14:29:00.533Z","modified":"2026-10-23T17:17:55.229250623Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:27:47.187336Z"},{"id":"CVE-2018-16853","description":"Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command.","status":"published","published":"2018-11-28T14:29:00.533Z","modified":"2026-10-24T10:30:18.544318963Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:08.533609Z"},{"id":"DEBIAN-CVE-2018-16853","description":"Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command.","status":"published","published":"2018-11-28T14:29:00.533Z","modified":"2026-10-23T18:03:01.385654256Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:30.290351Z"},{"id":"openSUSE-SU-2024:11365-1","title":"ctdb-4.14.6+git.182.2205d5224e3-1.1 on GA media","description":"These are all security issues fixed in the ctdb-4.14.6+git.182.2205d5224e3-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T04:12:49.07167Z","updated_at":"2026-11-02T16:58:35.195147Z"},{"id":"SUSE-SU-2018:4066-1","title":"Security update for samba","description":"This update for samba fixes the following issues:\n\nUpdate to samba version 4.7.11.\n\nSecurity issues fixed:\n\n- CVE-2018-14629: Fixed CNAME loops in Samba AD DC DNS server (bsc#1116319).\n- CVE-2018-16841: Fixed segfault on PKINIT when mis-matching principal (bsc#1116320).\n- CVE-2018-16851: Fixed NULL pointer de-reference in Samba AD DC LDAP server (bsc#1116322).\n- CVE-2018-16853: Mark MIT support for the AD DC experimental (bsc#1116324).\n\nNon-security issues fixed:\n\n- Fixed do not take over stderr when there is no log file (bsc#1101499).\n- Fixed ctdb_mutex_ceph_rados_helper deadlock; (bsc#1102230).\n- Fixed ntlm authentications with 'winbind use default domain = yes'; (bsc#1068059).\n- Fixed idmap_rid to have primary group other than 'Domain Users'; (bsc#1087931).\n- Fixed windows domain with one way trust that was not working (bsc#1087303).\n","status":"published","published":"2018-12-10T14:57:58Z","modified":"2026-02-04T02:55:25.370385Z","updated_at":"2026-11-02T15:53:45.378228Z"}]}}