Bug 922155 - SELinux is preventing /usr/bin/kdm from 'create' accesses on the file .xsession-errors-:0.
Summary: SELinux is preventing /usr/bin/kdm from 'create' accesses on the file .xsessi...
Keywords:
Status: CLOSED EOL
Alias: None
Product: Fedora
Classification: Fedora
Component: selinux-policy
Version: 20
Hardware: x86_64
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Miroslav Grepl
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: abrt_hash:53647c0d03f5dfc7ba401b56e37...
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2013-03-15 15:18 UTC by Martin
Modified: 2015-06-30 01:30 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2015-06-30 01:30:58 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Martin 2013-03-15 15:18:01 UTC
Description of problem:
SELinux is preventing /usr/bin/kdm from 'create' accesses on the file .xsession-errors-:0.

*****  Plugin catchall (100. confidence) suggests  ***************************

If you believe that kdm should be allowed create access on the .xsession-errors-:0 file by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# grep kdm /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:xdm_t:s0-s0:c0.c1023
Target Context                system_u:object_r:user_home_t:s0
Target Objects                .xsession-errors-:0 [ file ]
Source                        kdm
Source Path                   /usr/bin/kdm
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           kdm-4.10.0-10.fc19.x86_64
Target RPM Packages           
Policy RPM                    selinux-policy-3.12.1-20.fc19.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 3.8.0-2.fc19.x86_64 #1 SMP Wed Feb
                              20 00:35:44 UTC 2013 x86_64 x86_64
Alert Count                   2
First Seen                    2013-03-15 15:33:39 CET
Last Seen                     2013-03-15 15:34:54 CET
Local ID                      1ed32e19-34be-412f-a9d7-f5e9f09c2835

Raw Audit Messages
type=AVC msg=audit(1363358094.671:365): avc:  denied  { create } for  pid=1964 comm="kdm" name=".xsession-errors-:0" scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:user_home_t:s0 tclass=file


type=SYSCALL msg=audit(1363358094.671:365): arch=x86_64 syscall=open success=no exit=EACCES a0=f17060 a1=4c1 a2=180 a3=ffffff80 items=0 ppid=1931 pid=1964 auid=1000 uid=1000 gid=1000 euid=1000 suid=1000 fsuid=1000 egid=1000 sgid=1000 fsgid=1000 ses=2 tty=(none) comm=kdm exe=/usr/bin/kdm subj=system_u:system_r:xdm_t:s0-s0:c0.c1023 key=(null)

Hash: kdm,xdm_t,user_home_t,file,create

audit2allow

#============= xdm_t ==============
allow xdm_t user_home_t:file create;

audit2allow -R
require {
	type xdm_t;
}

#============= xdm_t ==============
userdom_manage_user_home_content_files(xdm_t)


Additional info:
hashmarkername: setroubleshoot
kernel:         3.8.0-2.fc19.x86_64
type:           libreport

Comment 1 Daniel Walsh 2013-03-15 18:12:20 UTC
Why is kdm creating this file in the users homedir rather then /run like gdm does?  Is this new functionality?


We currently have transition rules for .xsession-errors.

sesearch -T -s xdm_t | grep .xsession-errors
type_transition xdm_t admin_home_t : file xdm_home_t ".xsession-errors"; 
type_transition xdm_t user_home_dir_t : file xdm_home_t ".xsession-errors"; 

Is the goal here to support many Xsessions?

Comment 2 Rex Dieter 2013-03-15 18:28:54 UTC
kdm has done it this way... for ever.

I don't mind working to move things around, perhaps to match what gdm does (which seems to be a fun moving target from release to release)

Comment 3 Daniel Walsh 2013-03-15 18:34:28 UTC
Ok so maybe we tightened this up.

I will add transition rules for a bunch of them.

Comment 4 Daniel Walsh 2013-03-15 18:38:15 UTC
Fixed in selinux-policy-3.12.1-22.fc19

Comment 8 Fedora End Of Life 2013-09-16 16:56:21 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 20 development cycle.
Changing version to '20'.

More information and reason for this action is here:
https://fedoraproject.org/wiki/BugZappers/HouseKeeping/Fedora20

Comment 9 Fedora Update System 2013-09-25 20:38:29 UTC
selinux-policy-3.12.1-83.fc20 has been submitted as an update for Fedora 20.
https://admin.fedoraproject.org/updates/selinux-policy-3.12.1-83.fc20

Comment 10 Fedora Update System 2013-09-27 00:42:01 UTC
Package selinux-policy-3.12.1-83.fc20:
* should fix your issue,
* was pushed to the Fedora 20 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing selinux-policy-3.12.1-83.fc20'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2013-17722/selinux-policy-3.12.1-83.fc20
then log in and leave karma (feedback).

Comment 11 Fedora Update System 2013-10-02 06:41:54 UTC
Package selinux-policy-3.12.1-84.fc20:
* should fix your issue,
* was pushed to the Fedora 20 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing selinux-policy-3.12.1-84.fc20'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2013-17722/selinux-policy-3.12.1-84.fc20
then log in and leave karma (feedback).

Comment 12 Charlweed Hymerfan 2014-03-21 03:12:50 UTC
Description of problem:
New install.

Additional info:
reporter:       libreport-2.2.0
hashmarkername: setroubleshoot
kernel:         3.13.6-200.fc20.x86_64
type:           libreport

Comment 14 Fedora End Of Life 2015-05-29 08:55:32 UTC
This message is a reminder that Fedora 20 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 20. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora  'version'
of '20'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora 20 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora, you are encouraged  change the 'version' to a later Fedora 
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events. Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

Comment 15 Fedora End Of Life 2015-06-30 01:30:58 UTC
Fedora 20 changed to end-of-life (EOL) status on 2015-06-23. Fedora 20 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this
bug.

Thank you for reporting this bug and we are sorry it could not be fixed.


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