Bug 52053 – Samba password complexity check allows username in password

Bug 52053 - Samba password complexity check allows username in password


Summary:	Samba password complexity check allows username in password

Status:	NEW

Product:	UCS
Classification:	Unclassified
Component:	Samba4
Version:	UCS 4.4
Hardware:	Other Linux

Importance:	P5 normal (vote)
Target Milestone:	---
Assigned To:	Samba maintainers
QA Contact:	Samba maintainers

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2020-09-17 19:53 CEST by Arvid Requate
Modified:	2023-07-24 14:06 CEST (History)
CC List:	5 users (show)

See Also:	51994
What kind of report is it?:	Bug Report
What type of bug is this?:	3: Simply Wrong: The implementation doesn't match the docu
Who will be affected by this bug?:	3: Will affect average number of installed domains
How will those affected feel about the bug?:	2: A Pain – users won’t like this once they notice it
User Pain:	0.103
Enterprise Customer affected?:	Yes
School Customer affected?:
ISV affected?:
Waiting Support:
Flags outvoted (downgraded) after PO Review:
Ticket number:	2021062121000157, 2023071421000361
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Description Arvid Requate

2020-09-17 19:53:18 CEST

The password complexity check in Samba (4.10) doesn't complain if a new password contains the username and I guess the same holds for the parts of the displayName. The standard Microsoft password complexity criteria state that this should prevented:

https://docs.microsoft.com/de-de/windows/security/threat-protection/security-policy-settings/password-must-meet-complexity-requirements


Note: In univention.password.Check() I implemented this additional check separately in Python (Bug #51994), but that's not called when changing the password via Samba.

Comment 1 Christina Scheinig

2021-06-24 16:16:27 CEST

A customer would like to enforce password policy complexity in his environment.

If a user is changing his/her password the user should be able to change their password but they should not include their username (and Domain name). This is the customers requirement, but unfortunately it is not working