Bug 1457918

Summary: SELinux error while trying to create a new user
Product: [Fedora] Fedora Reporter: Shakhar Dasgupta <shakhardasgupta>
Component: selinux-policyAssignee: Lukas Vrabec <lvrabec>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 26CC: dominick.grift, dwalsh, lvrabec, mgrepl, plautrba, pmoore, ssekidde
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: selinux-policy-3.13.1-257.fc26 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2017-06-12 13:05:21 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Shakhar Dasgupta 2017-06-01 14:15:14 UTC
Description of problem:


Fedora 26 Beta 1.4 Workstation


How reproducible:


Steps to Reproduce:
1. Go to Settings -> Users
2. Unlock using root password
3. Create new user

Actual results:
SELinux notifies "SELinux is preventing useradd from using the net_admin capability". However, the new user account seems to work fine (not really sure when the net_admin capability is required).

Expected results:
No notification from SELinux.

Error Log:
--------------------------------------------------------------------------------
SELinux is preventing useradd from using the net_admin capability.

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

If you believe that useradd should have the net_admin 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 'useradd' --raw | audit2allow -M my-useradd
# semodule -X 300 -i my-useradd.pp

Additional Information:
Source Context                system_u:system_r:useradd_t:s0
Target Context                system_u:system_r:useradd_t:s0
Target Objects                Unknown [ capability ]
Source                        useradd
Source Path                   useradd
Port                          <Unknown>
Host                          localhost.localdomain
Source RPM Packages          
Target RPM Packages          
Policy RPM                    selinux-policy-3.13.1-251.fc26.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     localhost-live
Platform                      Linux localhost-live 4.11.0-2.fc26.x86_64 #1 SMP
                              Tue May 9 15:24:49 UTC 2017 x86_64 x86_64
Alert Count                   14
First Seen                    2017-06-01 04:13:56 EDT
Last Seen                     2017-06-01 04:13:56 EDT
Local ID                      24e05744-a44a-4e10-86f8-5e915802562a

Raw Audit Messages
type=AVC msg=audit(1496304836.749:254): avc:  denied  { net_admin } for  pid=2300 comm="useradd" capability=12  scontext=system_u:system_r:useradd_t:s0 tcontext=system_u:system_r:useradd_t:s0 tclass=capability permissive=0


Hash: useradd,useradd_t,useradd_t,capability,net_admin
--------------------------------------------------------------------------------

Comment 1 Daniel Walsh 2017-06-01 18:25:36 UTC
It is definitely not required.  This should be dontaudited, but most likely a slight kernel issue.

Comment 2 Fedora Update System 2017-06-08 11:09:24 UTC
selinux-policy-3.13.1-257.fc26 has been submitted as an update to Fedora 26. https://bodhi.fedoraproject.org/updates/FEDORA-2017-6a43388229

Comment 3 Fedora Update System 2017-06-10 01:09:25 UTC
selinux-policy-3.13.1-257.fc26 has been pushed to the Fedora 26 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-6a43388229

Comment 4 Fedora Update System 2017-06-12 13:05:21 UTC
selinux-policy-3.13.1-257.fc26 has been pushed to the Fedora 26 stable repository. If problems still persist, please make note of it in this bug report.