{"id":"CVE-2019-14870","state":"PUBLISHED","title":"All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the S4U (MS-SFU) Kerberos delegation model includes a feature allowing f","description":"All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the S4U (MS-SFU) Kerberos delegation model includes a feature allowing for a subset of clients to be opted out of constrained delegation in any way, either S4U2Self or regular Kerberos authentication, by forcing all tickets for these clients to be non-forwardable. In AD this is implemented by a user attribute delegation_not_allowed (aka not-delegated), which translates to disallow-forwardable. However the Samba AD DC does not do that for S4U2Self and does set the forwardable flag even if the impersonated client has the not-delegated flag set.","publishedAt":"2019-12-10T00:00:00.000Z","updatedAt":"2024-08-05T00:26:39.129Z","severity":{"score":5.4,"label":"Medium","version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","source":"redhat"},"assigner":"redhat","products":["Red Hat samba"],"affected":[{"vendor":"Red Hat","product":"samba","versions":[{"version":"all versions 4.11.x before 4.11.3","status":"affected"},{"version":"all versions 4.10.x before 4.10.11","status":"affected"},{"version":"all versions 4.x.x before 4.9.17","status":"affected"}]}],"references":["https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14870","https://usn.ubuntu.com/4217-1/","https://security.netapp.com/advisory/ntap-20191210-0002/","https://www.samba.org/samba/security/CVE-2019-14870.html","https://usn.ubuntu.com/4217-2/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PJH3ROOFYMOATD2UEPC47P5RPBDTY77E/","https://www.synology.com/security/advisory/Synology_SA_19_40","http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00038.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNKA4YIPV7AZR7KK3GW6L3HKGHSGJZFE/","https://security.gentoo.org/glsa/202003-52","https://lists.debian.org/debian-lts-announce/2021/05/msg00023.html","https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html","https://security.netapp.com/advisory/ntap-20230216-0008/","https://security.gentoo.org/glsa/202310-06"],"weaknesses":["CWE-285"],"ingestedAt":"2026-10-29T19:45:30.451Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2019/14xxx/CVE-2019-14870.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2019-14870","state":"PUBLISHED","datePublished":"2019-12-10T00:00:00.000Z","dateUpdated":"2024-08-05T00:26:39.129Z","assignerShortName":"redhat","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateReserved":"2019-08-10T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the S4U (MS-SFU) Kerberos delegation model includes a feature allowing for a subset of clients to be opted out of constrained delegation in any way, either S4U2Self or regular Kerberos authentication, by forcing all tickets for these clients to be non-forwardable. In AD this is implemented by a user attribute delegation_not_allowed (aka not-delegated), which translates to disallow-forwardable. 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