On a Samba 4 AD DC the LDAP server in all versions of Samba from 4.0.0 onwards incorrectly validates permissions to modify passwords over LDAP allowing authenticated users to change any other users' passwords, including administrative users and privileged service accounts (eg Domain Controllers).
http://www.securityfocus.com/bid/103382
http://www.securitytracker.com/id/1040494
https://bugzilla.redhat.com/show_bug.cgi?id=1553553
https://lists.debian.org/debian-lts-announce/2019/04/msg00013.html
https://security.gentoo.org/glsa/201805-07
https://security.netapp.com/advisory/ntap-20180313-0001/
https://usn.ubuntu.com/3595-1/
https://www.debian.org/security/2018/dsa-4135
Source: MITRE
Published: 2018-03-13
Updated: 2020-09-09
Type: CWE-863
Base Score: 6.5
Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 8
Severity: MEDIUM
Base Score: 8.8
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 2.8
Severity: HIGH