Bug 1125165

Description of problem:
Newly built EPEL7 package varnish-4.0.1-2.el7 is prohibited from starting by selinux. This was only tested on CentOS7, but I think the results would be the same on RHEL7.

Version-Release number of selected component (if applicable):
selinux-policy-3.12.1-153.el7_0.10.noarch

How reproducible:
Always

Steps to Reproduce:
1. Install varnish-4.0.1-2.el7

If not available on mirrors yet, the build is here: http://koji.fedoraproject.org/koji/buildinfo?buildID=549140

2. systemctl start varnish.service; systemctl status varnish.service
3. setenforce 0
4. systemctl start varnish.service; systemctl status varnish.service

Actual results:
Varnish does not start unless selinux enforcement is turned off

Expected results:
Varnish should be allowed to start


Additional info:

I think it's a bit strange I don't see this on f19. I haven't tested on f20 yet.

This is the culprit:

varnishd[20364]: Failed to set permissions on ./vcl.UdrgPE5O.so: Operation not permitted

sealert output:

[root@centos7 audit]# sealert -a audit.log
 38% done'list' object has no attribute 'split'
100% done
found 1 alerts in audit.log
--------------------------------------------------------------------------------

SELinux is preventing /usr/sbin/varnishd from using the fowner capability.

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

If you believe that varnishd should have the fowner capability 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 varnishd /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp


Additional Information:
Source Context                system_u:system_r:varnishd_t:s0
Target Context                system_u:system_r:varnishd_t:s0
Target Objects                 [ capability ]
Source                        varnishd
Source Path                   /usr/sbin/varnishd
Port                          <Unknown>
Host                          <Unknown>
Source RPM Packages           varnish-4.0.1-2.el7.x86_64
Target RPM Packages           
Policy RPM                    selinux-policy-3.12.1-153.el7_0.10.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Host Name                     centos7
Platform                      Linux centos7 3.10.0-123.4.4.el7.x86_64 #1 SMP Fri
                              Jul 25 05:07:12 UTC 2014 x86_64 x86_64
Alert Count                   13
First Seen                    2014-07-30 09:39:30 CEST
Last Seen                     2014-07-31 10:22:20 CEST
Local ID                      4921c987-8da1-4bed-b2f4-b44521fe319e

Raw Audit Messages
type=AVC msg=audit(1406794940.879:374): avc:  denied  { fowner } for  pid=10373 comm="varnishd" capability=3  scontext=system_u:system_r:varnishd_t:s0 tcontext=system_u:system_r:varnishd_t:s0 tclass=capability


type=AVC msg=audit(1406794940.879:374): avc:  denied  { fsetid } for  pid=10373 comm="varnishd" capability=4  scontext=system_u:system_r:varnishd_t:s0 tcontext=system_u:system_r:varnishd_t:s0 tclass=capability


type=SYSCALL msg=audit(1406794940.879:374): arch=x86_64 syscall=chmod success=yes exit=0 a0=7fff14bcad00 a1=1ed a2=0 a3=0 items=0 ppid=1 pid=10373 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm=varnishd exe=/usr/sbin/varnishd subj=system_u:system_r:varnishd_t:s0 key=(null)

Hash: varnishd,varnishd_t,varnishd_t,capability,fowner