Bug 1249834 - SELinux is preventing /usr/lib64/firefox/plugin-container from using the 'dac_override' capabilities.
SELinux is preventing /usr/lib64/firefox/plugin-container from using the 'dac...
Product: Fedora
Classification: Fedora
Component: selinux-policy (Show other bugs)
x86_64 Unspecified
unspecified Severity unspecified
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Assigned To: Vit Mojzis
Fedora Extras Quality Assurance
Depends On:
  Show dependency treegraph
Reported: 2015-08-03 19:18 EDT by Frank Daniel
Modified: 2015-08-13 08:33 EDT (History)
5 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2015-08-13 08:33:42 EDT
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Regression: ---
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Documentation: ---
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Frank Daniel 2015-08-03 19:18:31 EDT
Description of problem:
Was trying to reinstall mysql
SELinux is preventing /usr/lib64/firefox/plugin-container from using the 'dac_override' capabilities.

*****  Plugin mozplugger (87.7 confidence) suggests   ************************

If you want to use the plugin package
Then you must turn off SELinux controls on the Firefox plugins.
# setsebool -P unconfined_mozilla_plugin_transition 0

*****  Plugin dac_override (12.1 confidence) suggests   **********************

If you want to help identify if domain needs this access or you have a file with the wrong permissions on your system
Then turn on full auditing to get path information about the offending file and generate the error again.

Turn on full auditing
# auditctl -w /etc/shadow -p w
Try to recreate AVC. Then execute
# ausearch -m avc -ts recent
If you see PATH record check ownership/permissions on file, and fix it, 
otherwise report as a bugzilla.

*****  Plugin catchall (1.66 confidence) suggests   **************************

If you believe that plugin-container should have the dac_override capability by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
allow this access for now by executing:
# grep plugin-containe /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                unconfined_u:unconfined_r:mozilla_plugin_t:s0-s0:c
Target Context                unconfined_u:unconfined_r:mozilla_plugin_t:s0-s0:c
Target Objects                Unknown [ capability ]
Source                        plugin-containe
Source Path                   /usr/lib64/firefox/plugin-container
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           firefox-39.0-8.fc22.x86_64
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-128.6.fc22.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 4.1.2-200.fc22.x86_64 #1 SMP Wed
                              Jul 15 20:12:12 UTC 2015 x86_64 x86_64
Alert Count                   28
First Seen                    2015-08-03 15:52:09 PDT
Last Seen                     2015-08-03 15:54:15 PDT
Local ID                      6d8edc2d-3920-4f67-b35e-2cbf7639a83a

Raw Audit Messages
type=AVC msg=audit(1438642455.481:650): avc:  denied  { dac_override } for  pid=3045 comm="plugin-containe" capability=1  scontext=unconfined_u:unconfined_r:mozilla_plugin_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:mozilla_plugin_t:s0-s0:c0.c1023 tclass=capability permissive=0

type=SYSCALL msg=audit(1438642455.481:650): arch=x86_64 syscall=mkdir success=no exit=EACCES a0=24ca56a500d0 a1=1c0 a2=ffffffffffffff70 a3=24ca5697c030 items=0 ppid=2942 pid=3045 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=1 comm=plugin-containe exe=/usr/lib64/firefox/plugin-container subj=unconfined_u:unconfined_r:mozilla_plugin_t:s0-s0:c0.c1023 key=(null)

Hash: plugin-containe,mozilla_plugin_t,mozilla_plugin_t,capability,dac_override

Version-Release number of selected component:

Additional info:
reporter:       libreport-2.6.1
hashmarkername: setroubleshoot
kernel:         4.1.2-200.fc22.x86_64
type:           libreport

Potential duplicate: bug 744318
Comment 1 Vit Mojzis 2015-08-12 08:32:37 EDT
The error was most likely caused by running Firefox as root (it is strongly recommended against doing so - security risk). If running it as normal user doesn't help, turn on full auditing in order to get target path.
# auditctl -w /etc/shadow -p w
Try to recreate AVC. Then execute
# ausearch -m avc -ts recent
If you see PATH record, check ownership/permissions on the target directory and fix it.
Comment 2 Lukas Vrabec 2015-08-13 08:33:42 EDT
Closing as NOTABUG. If this show up again, please, re-open this issue.

Thank you Vit for analyze.

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