{"id":"CVE-2018-16841","aliases":["ALPINE-CVE-2018-16841","DEBIAN-CVE-2018-16841","DSA-4345-1","EUVD-2018-8637","GHSA-q3v8-mj9m-2wq4","MGASA-2019-0011","SUSE-SU-2018:4066-1","UBUNTU-CVE-2018-16841","USN-3827-1","openSUSE-SU-2024:11365-1"],"status":"published","title":"Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial...","description":"Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with talloc_free() and directly calls abort(), terminating the KDC process.","severity":{"version":"3.0","score":5.7,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.04586,"percentile":0.91704,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-415","CWE-416"],"published":"2018-11-27T00:00:00Z","modified":"2026-10-24T10:31:03Z","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:v3.6","package":"samba","fixed_in":["4.6.16-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.7","package":"samba","fixed_in":["4.7.6-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.8","package":"samba","fixed_in":["4.8.8-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"]},{"ecosystem":"Ubuntu:14.04:LTS","package":"samba","fixed_in":["2:4.3.11+dfsg-0ubuntu0.14.04.19"],"sources":["osv"]},{"ecosystem":"Ubuntu:16.04:LTS","package":"samba","fixed_in":["2:4.3.11+dfsg-0ubuntu0.16.04.18"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"samba","fixed_in":["2:4.7.6+dfsg~ubuntu-0ubuntu2.5"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.10","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.11","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.12","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.13","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.14","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.15","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.16","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.17","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.18","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.19","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.20","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.21","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3.0"},{"fixed":"4.8.7-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3.0"},{"fixed":"4.8.7-r0"}]}]},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Party Advisory","VDB Entry","advisory"]},{"url":"https://usn.ubuntu.com/3827-2/","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","Third Party Advisory","advisory"]},{"url":"https://usn.ubuntu.com/3827-1/","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","Third Party Advisory","advisory"]},{"url":"https://security.netapp.com/advisory/ntap-20181127-0001/","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16841","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Third Party Advisory","report"]},{"url":"https://www.debian.org/security/2018/dsa-4345","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://www.samba.org/samba/security/CVE-2018-16841.html","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor 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Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-16841"},{"url":"https://github.com/advisories/GHSA-q3v8-mj9m-2wq4"},{"url":"https://security.alpinelinux.org/vuln/CVE-2018-16841","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-16841","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2019-0011.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=24061","tags":["report"]},{"url":"https://www.samba.org/samba/security/CVE-2018-14629.html","tags":["advisory"]},{"url":"https://www.samba.org/samba/security/CVE-2018-16851.html","tags":["advisory"]},{"url":"https://www.samba.org/samba/history/samba-4.7.0.html","tags":["web"]},{"url":"https://www.samba.org/samba/history/samba-4.7.1.html","tags":["web"]},{"url":"https://www.samba.org/samba/history/samba-4.7.2.html","tags":["web"]},{"url":"https://www.samba.org/samba/history/samba-4.7.3.html","tags":["web"]},{"url":"https://www.samba.org/samba/history/samba-4.7.4.html","tags":["web"]},{"url":"https://www.samba.org/samba/history/samba-4.7.5.html","tags":["web"]},{"url":"https://www.samba.org/samba/history/samba-4.7.6.html","tags":["web"]},{"url":"https://www.samba.org/samba/history/samba-4.7.7.html","tags":["web"]},{"url":"https://www.samba.org/samba/history/samba-4.7.8.html","tags":["web"]},{"url":"https://www.samba.org/samba/history/samba-4.7.9.html","tags":["web"]},{"url":"https://www.samba.org/samba/history/samba-4.7.10.html","tags":["web"]},{"url":"https://www.samba.org/samba/history/samba-4.7.11.html","tags":["web"]},{"url":"https://www.samba.org/samba/history/samba-4.7.12.html","tags":["web"]},{"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":"https://ubuntu.com/security/CVE-2018-16841","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-3827-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/notices/USN-3827-2","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-16841","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2018-14629","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2018-16851","tags":["report"]},{"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-2018-16841","description":"Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with talloc_free() and directly calls abort(), terminating the KDC process.","status":"published","published":"2018-11-28T14:00:00Z","modified":"2024-08-05T10:32:54.002Z","cvss":[{"version":"3.0","score":5.7,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:35:11.426178Z"}],"euvd":[{"id":"EUVD-2018-8637","description":"Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with talloc_free() and directly calls abort(), terminating the KDC process.","status":"published","published":"2018-11-28T14:00:00Z","modified":"2024-08-05T10:32:54Z","cvss":[{"version":"3.0","score":5.7,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T02:39:40.316949Z"}],"ghsa":[{"id":"GHSA-q3v8-mj9m-2wq4","title":"Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial...","description":"Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with talloc_free() and directly calls abort(), terminating the KDC process.","status":"published","published":"2022-05-13T01:34:06Z","modified":"2023-02-03T05:01:35Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T14:53:00.497966Z"}],"nvd":[{"id":"CVE-2018-16841","description":"Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with talloc_free() and directly calls abort(), terminating the KDC process.","status":"published","published":"2018-11-28T14:29:00.347Z","modified":"2026-06-17T01:44:53.073Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"3.0","score":5.7,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-416","CWE-415"],"updated_at":"2026-11-02T14:04:48.987926Z"}],"osv":[{"id":"ALPINE-CVE-2018-16841","description":"Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with talloc_free() and directly calls abort(), terminating the KDC process.","status":"published","published":"2018-11-28T14:29:00.347Z","modified":"2026-10-23T17:17:55.227977004Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:27:47.187336Z"},{"id":"CVE-2018-16841","description":"Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with talloc_free() and directly calls abort(), terminating the KDC process.","status":"published","published":"2018-11-28T14:29:00.347Z","modified":"2026-10-24T10:31:03.732459931Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:08.533609Z"},{"id":"DEBIAN-CVE-2018-16841","description":"Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with talloc_free() and directly calls abort(), terminating the KDC process.","status":"published","published":"2018-11-28T14:29:00.347Z","modified":"2026-10-23T18:03:01.111168617Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:30.290351Z"},{"id":"UBUNTU-CVE-2018-16841","description":"Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with talloc_free() and directly calls abort(), terminating the KDC process.","status":"published","published":"2018-11-27T00:00:00Z","modified":"2026-04-22T11:47:37.630311Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"},{"version":"3.0","score":5.7,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium"},{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:17.496046Z"},{"id":"DSA-4345-1","title":"samba - security update","status":"published","published":"2018-11-27T00:00:00Z","modified":"2026-03-09T02:10:12.843137Z","updated_at":"2026-11-02T15:46:16.862196Z"},{"id":"MGASA-2019-0011","title":"Updated ldb, talloc, and samba packages fix security vulnerabilities","description":"Florian Stuelpner discovered that Samba is vulnerable to infinite query\nrecursion caused by CNAME loops, resulting in denial of service\n(CVE-2018-14629).\n\nAlex MacCuish discovered that a user with a valid certificate or smart\ncard can crash the Samba AD DC's KDC when configured to accept\nsmart-card authentication (CVE-2018-16841).\n\nGarming Sam of the Samba Team and Catalyst discovered a NULL pointer\ndereference vulnerability in the Samba AD DC LDAP server allowing a user\nable to read more than 256MB of LDAP entries to crash the Samba AD DC's\nLDAP server (CVE-2018-16851).\n\nSamba has been updated to version 4.7.12 of the 4.7.x stable branch, and\nthe tdb, talloc, tevent, ldb, and cmocka packages have also been updated.\n\nThe sssd package has also been rebuilt against the updated ldb.\n","status":"published","published":"2019-01-05T18:30:16Z","modified":"2026-04-16T06:26:19.005954279Z","updated_at":"2026-11-02T15:49:40.793816Z"},{"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"},{"id":"USN-3827-1","title":"samba vulnerabilities","description":"Florian Stuelpner discovered that Samba incorrectly handled CNAME records.\nA remote attacker could use this issue to cause Samba to crash, resulting\nin a denial of service. (CVE-2018-14629)\n\nAlex MacCuish discovered that Samba incorrectly handled memory when\nconfigured to accept smart-card authentication. A remote attacker could\npossibly use this issue to cause Samba to crash, resulting in a denial of\nservice. (CVE-2018-16841)\n\nGarming Sam discovered that Samba incorrectly handled memory when\nprocessing LDAP searches. A remote attacker could possibly use this issue\nto cause Samba to crash, resulting in a denial of service. (CVE-2018-16851)\n","status":"published","published":"2018-11-27T12:35:49Z","modified":"2026-04-22T09:52:13.403328Z","updated_at":"2026-11-02T16:58:14.019824Z"}]}}