MIT krb5 1.6 or later allows an authenticated kadmin with permission to add principals to an LDAP Kerberos database to circumvent a DN containership check by supplying both a "linkdn" and "containerdn" database argument, or by supplying a DN string which is a left extension of a container DN string but is not hierarchically within the container DN.
https://github.com/krb5/krb5/commit/e1caf6fb74981da62039846931ebdffed71309d1
https://bugzilla.redhat.com/show_bug.cgi?id=1551082
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891869
https://access.redhat.com/errata/RHSA-2018:3071
http://www.securitytracker.com/id/1042071
https://lists.debian.org/debian-lts-announce/2019/01/msg00020.html
https://access.redhat.com/errata/RHBA-2019:0327
https://lists.debian.org/debian-lts-announce/2021/09/msg00019.html
Source: MITRE
Published: 2018-03-06
Updated: 2022-04-18
Type: CWE-90
Base Score: 5.5
Vector: AV:N/AC:L/Au:S/C:P/I:P/A:N
Impact Score: 4.9
Exploitability Score: 8
Severity: MEDIUM
Base Score: 3.8
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Impact Score: 2.5
Exploitability Score: 1.2
Severity: LOW