Bug 1008577

Summary:	login: pam_selinux(login:session): Unable to get valid context for root
Product:	[Fedora] Fedora	Reporter:	Dominick Grift <dominick.grift>
Component:	pam	Assignee:	Tomas Mraz <tmraz>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	rawhide	CC:	dwalsh, jonathan, kzak, mluscon, tmraz
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	libselinux-2.1.13-19.fc20	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-09-20 11:13:24 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Dominick Grift 2013-09-16 16:00:14 UTC

Description of problem:

login program not able to determine valid context, probably due to misuse of libselinux functions ( but do not shoot me if it isnt )

Sep 16 17:54:38 localhost login: pam_selinux(login:session): Open Session
Sep 16 17:54:38 localhost login: pam_selinux(login:session): Open Session
Sep 16 17:54:38 localhost login: pam_selinux(login:session): Username= root SELinux User= base_u Level= (null)
Sep 16 17:54:38 localhost login: pam_selinux(login:session): Unable to get valid context for root
Sep 16 17:54:38 localhost login: pam_unix(login:session): session opened for user root by LOGIN(uid=0)
Sep 16 17:54:38 localhost login: ROOT LOGIN ON tty1

Version-Release number of selected component (if applicable):
util-linux-2.23.2-2.fc19.x86_64

How reproducible:
load a custom policy that uses custom identifiers

Comment 1 Daniel Walsh 2013-09-16 19:11:33 UTC

Dominick What is the label of the login program?  This usually means that the app can not figure out proper login shell for the user.

Comment 2 Daniel Walsh 2013-09-16 19:15:19 UTC

You need to make sure your policy, context files are written properly for the selinux login programs to work.

getdefaultcon and getconlist should help.

Comment 3 Dominick Grift 2013-09-16 19:15:54 UTC

base_u:base_r:base_t

And there is a /etc/selinux/dummy/contexts/users/base_u file

with:

base_r:base_t base_r:base_t

there is also a seuser: base_u and root it mapped to it

The exact same configuration works fine on debian

Comment 4 Dominick Grift 2013-09-16 19:17:43 UTC

(In reply to Daniel Walsh from comment #2)
> You need to make sure your policy, context files are written properly for
> the selinux login programs to work.
> 
> getdefaultcon and getconlist should help.

I know that and i wouldnt make an issue out of it if i wasnt pretty confident that this is a case of misuse of libselinux functions

You see the exact same configuration works fine on debian

Comment 5 Dominick Grift 2013-09-16 19:18:56 UTC

With that said, i am still only human, but i triple checked everything and i think my config is fine and if you want you can come have a look yourself

Comment 6 Daniel Walsh 2013-09-16 19:31:45 UTC

What does

selinuxdefcon dgrift base_u:base_r:base_t

Say?

Comment 7 Daniel Walsh 2013-09-16 19:32:56 UTC

If this is a bug it is in pam_selinux

Comment 8 Dominick Grift 2013-09-17 11:52:16 UTC

This was fixed in:

libselinux-2.1.13-19.fc20.x86_64
libselinux-utils-2.1.13-19.fc20.x86_64
libselinux-python-2.1.13-19.fc20.x86_64

Although you might want to get rid of the verbose output:

Security Context base_u:base_r:base_t Assigned
Key Creation Context base_u:base_r:base_t Assigned

Comment 9 Dominick Grift 2013-09-17 12:00:44 UTC

(In reply to Dominick Grift from comment #8)

> Although you might want to get rid of the verbose output:
> 
> Security Context base_u:base_r:base_t Assigned
> Key Creation Context base_u:base_r:base_t Assigned

Forget the above my pam_selinux was still configured with verbose debug

Comment 10 Dominick Grift 2013-09-20 11:13:24 UTC

I will mark this as fixed, as libselinux-2.1.13-19.fc20.x86_64 fixed it

Comment 11 Fedora Update System 2013-09-23 13:57:23 UTC

libselinux-2.1.13-19.fc20 has been submitted as an update for Fedora 20.
https://admin.fedoraproject.org/updates/libselinux-2.1.13-19.fc20

Comment 12 Fedora Update System 2013-09-30 00:49:49 UTC

libselinux-2.1.13-19.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.