Bug 1389833

Summary: SELinux is preventing sudo from using the 'setgid' capabilities.
Product: [Fedora] Fedora Reporter: mrummuka <mrummuka>
Component: apmdAssignee: Jaroslav Škarvada <jskarvad>
Status: CLOSED EOL QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 24CC: dominick.grift, dwalsh, jskarvad, lvrabec, mgrepl, mrummuka, plautrba, pmoore
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Unspecified   
Whiteboard: abrt_hash:9e6f097ca64c618da585532d796690fa07c74397a38b767ba328c09de435680b;VARIANT_ID=workstation;
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2017-08-08 19:02:23 UTC Type: ---
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description mrummuka 2016-10-28 19:44:37 UTC
Description of problem:
SELinux is preventing sudo from using the 'setgid' capabilities.

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

If you believe that sudo should have the setgid 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:
# ausearch -c 'sudo' --raw | audit2allow -M my-sudo
# semodule -X 300 -i my-sudo.pp

Additional Information:
Source Context                system_u:system_r:apmd_t:s0
Target Context                system_u:system_r:apmd_t:s0
Target Objects                Unknown [ capability ]
Source                        sudo
Source Path                   sudo
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-191.5.fc24.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 4.6.4-301.fc24.x86_64 #1 SMP Tue
                              Jul 12 11:50:00 UTC 2016 x86_64 x86_64
Alert Count                   86
First Seen                    2016-07-28 22:22:37 EEST
Last Seen                     2016-07-28 22:52:36 EEST
Local ID                      ad487ddf-643f-4afb-a39b-f42265f398d4

Raw Audit Messages
type=AVC msg=audit(1469735556.119:847): avc:  denied  { setgid } for  pid=26458 comm="sudo" capability=6  scontext=system_u:system_r:apmd_t:s0 tcontext=system_u:system_r:apmd_t:s0 tclass=capability permissive=0


Hash: sudo,apmd_t,apmd_t,capability,setgid

Version-Release number of selected component:
selinux-policy-3.13.1-191.5.fc24.noarch

Additional info:
reporter:       libreport-2.7.2
hashmarkername: setroubleshoot
kernel:         4.7.9-200.fc24.x86_64
type:           libreport

Comment 1 Lukas Vrabec 2016-11-02 11:26:47 UTC
Apmd folks, 
Any idea whats going on here?

Comment 2 Jaroslav Škarvada 2016-11-02 11:39:17 UTC
It's strange that somebody is still using it (it's i386 arch only). AFAIK we don't call sudo in our scripts, but user can install it's own scripts.

Is it default apmd installation, or is it customized? Could you provide reproducer for this problem?

Comment 3 mrummuka 2016-11-21 19:25:54 UTC
Hmm. I don't have apmd installed, and I'm unaware what caused this. Could I find more information from DNF or selinux transaction history?

Comment 4 Jaroslav Škarvada 2016-11-22 09:54:33 UTC
You could check /var/log/dnf.rpm.log* to find out whether there is anything apmd related, but I am afraid, there is not much more to get from the logs. Lukas any idea?

We know, there is some process with apmd label that tries to run sudo, strange and suspicious. 

Maybe you can also search filesystem for files with apmd SELinux labels. But it could be temporal file. Personally I would also check the system if not compromised or preventively reinstall it, but I am too paranoid ;)

Comment 5 Daniel Walsh 2016-11-22 21:56:28 UTC
These are the commands that run as apmd_t.

/usr/sbin/apmd	--	system_u:object_r:apmd_exec_t:s0
/usr/sbin/acpid	--	system_u:object_r:apmd_exec_t:s0
/usr/sbin/powersaved	--	system_u:object_r:apmd_exec_t:s0

Comment 6 Fedora End Of Life 2017-07-25 23:39:20 UTC
This message is a reminder that Fedora 24 is nearing its end of life.
Approximately 2 (two) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 24. 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 '24'.

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 24 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 7 Fedora End Of Life 2017-08-08 19:02:23 UTC
Fedora 24 changed to end-of-life (EOL) status on 2017-08-08. Fedora 24 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.