Bug 1268649

Summary:	Corner case where lightdm allows the login even if the provided password is wrong
Product:	[Fedora] Fedora	Reporter:	Giulio 'juliuxpigface' <juliux.pigface>
Component:	lightdm	Assignee:	Rex Dieter <rdieter>
Status:	CLOSED DUPLICATE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	low	Docs Contact:
Priority:	unspecified
Version:	23	CC:	christoph.wickert, rdieter
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OS:	Unspecified
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Fixed In Version:		Doc Type:	Bug Fix
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Clone Of:		Environment:
Last Closed:	2015-10-13 19:51:30 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:

Description Giulio 'juliuxpigface' 2015-10-04 10:40:50 UTC

Description of problem:
I found what seems a corner case where lightdm allows the login even if the provided password is actually "wrong". This might not be a true bug, but *in my opinion* the behavior of lightdm is not what an user expects.

Version-Release number of selected component (if applicable):
lightdm-1.10.5-4.fc23.i686

How reproducible:
Always

Steps to Reproduce:
1. Create an user without password.
2. Login through lightdm with that user.
3. Provide a password for the login.

Actual results:
ligthdm allows the user to login.

Expected results:
At least in my opinion, lightdm should refuse the login. The real password is blank, so if no blank password is provided, the real combination of "login name + password" is not actually matched.

Additional info:
Fedora 23 Final TC1 (32 bit) on qemu-kvm.
lxdm has got the same approach (See bug 1268624).

Comment 1 Rex Dieter 2015-10-13 19:51:30 UTC


*** This bug has been marked as a duplicate of bug 1271377 ***