Bug 818882 - Default SELinux policy blocks asterisk file read
Summary: Default SELinux policy blocks asterisk file read
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: selinux-policy
Version: 16
Hardware: i386
OS: Linux
unspecified
medium
Target Milestone: ---
Assignee: Miroslav Grepl
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2012-05-04 09:19 UTC by John Bradshaw
Modified: 2012-07-26 03:53 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2012-07-26 03:53:29 UTC


Attachments (Terms of Use)

Description John Bradshaw 2012-05-04 09:19:26 UTC
Description of problem:
SELinux has blocked asterisk from accessing a file.  SELinux troubleshooter information below.

This is a fresh installation of asterisk - no configuration or customisation has been performed as yet.  Only thing I've done since installation was "service asterisk start".

Version-Release number of selected component (if applicable):
selinux-policy-3.10.0-84.fc16.noarch
asterisk-1.8.11.0-1.fc16.i686
asterisk-ooh323-1.8.11.0-1.fc16.i686

How reproducible:
Always.  Deny message in audit.log is approx 1 second after asterisk service start message.


type=SERVICE_START msg=audit(1336121106.636:84): pid=0 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg=' comm="asterisk" exe="/bin/systemd" hostname=? addr=? terminal=? res=success'

type=AVC msg=audit(1336121107.677:85): avc:  denied  { read } for  pid=3016 comm="asterisk" name="unix" dev="proc" ino=4026532001 context=system_u:system_r:asterisk_t:s0 tcontext=system_u:object_r:proc_net_t:s0 tclass=file




Steps to Reproduce:
1. Install asterisk RPM via yum
2. service asterisk start
3. check audit.log or SELinux troubleshooter
  
Actual results:
SELinux is preventing asterisk from read access on the file unix.

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

If you believe that asterisk should be allowed read access on the unix 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 asterisk /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:asterisk_t:s0
Target Context                system_u:object_r:proc_net_t:s0
Target Objects                unix [ file ]
Source                        asterisk
Source Path                   asterisk
Port                          <Unknown>
Host                          opti.localdomain
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.10.0-84.fc16.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     opti.localdomain
Platform                      Linux opti.localdomain 3.3.2-6.fc16.i686 #1 SMP
                              Sat Apr 21 13:23:12 UTC 2012 i686 i686
Alert Count                   1
First Seen                    Fri 04 May 2012 09:45:07 AM BST
Last Seen                     Fri 04 May 2012 09:45:07 AM BST
Local ID                      c9815f10-65bf-48f6-92c9-291e9db88f5f

Raw Audit Messages
type=AVC msg=audit(1336121107.677:85): avc:  denied  { read } for  pid=3016 comm="asterisk" name="unix" dev="proc" ino=4026532001 scontext=system_u:system_r:asterisk_t:s0 tcontext=system_u:object_r:proc_net_t:s0 tclass=file


Hash: asterisk,asterisk_t,proc_net_t,file,read

audit2allow

#============= asterisk_t ==============
allow asterisk_t proc_net_t:file read;

audit2allow -R

#============= asterisk_t ==============
allow asterisk_t proc_net_t:file read;


Expected results:


Additional info:

Comment 1 Miroslav Grepl 2012-06-22 13:06:17 UTC
Fixed in selinux-policy-3.10.0-90.fc16.noarch

Comment 2 Fedora Update System 2012-07-02 08:48:06 UTC
selinux-policy-3.10.0-90.fc16 has been submitted as an update for Fedora 16.
https://admin.fedoraproject.org/updates/selinux-policy-3.10.0-90.fc16

Comment 3 Fedora Update System 2012-07-03 15:49:55 UTC
Package selinux-policy-3.10.0-90.fc16:
* should fix your issue,
* was pushed to the Fedora 16 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing selinux-policy-3.10.0-90.fc16'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2012-10203/selinux-policy-3.10.0-90.fc16
then log in and leave karma (feedback).

Comment 4 Fedora Update System 2012-07-26 03:53:29 UTC
selinux-policy-3.10.0-90.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.


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