Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Bug 1828809

Summary: SELinux prevents the sysadm_u processes from D-bus talk to accounts-daemon
Product: Red Hat Enterprise Linux 8 Reporter: Milos Malik <mmalik>
Component: selinux-policyAssignee: Zdenek Pytela <zpytela>
Status: CLOSED ERRATA QA Contact: Milos Malik <mmalik>
Severity: medium Docs Contact:
Priority: medium    
Version: 8.2CC: lvrabec, mmalik, plautrba, ssekidde
Target Milestone: rcKeywords: AutoVerified, Triaged
Target Release: 8.3Flags: pm-rhel: mirror+
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: No Doc Update
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-11-04 01:56:37 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:
Bug Depends On:    
Bug Blocks: 1778780    

Description Milos Malik 2020-04-28 11:55:47 UTC
Description of problem:

Version-Release number of selected component (if applicable):
accountsservice-0.6.50-8.el8.x86_64
accountsservice-libs-0.6.50-8.el8.x86_64
selinux-policy-3.14.3-43.el8.noarch
selinux-policy-devel-3.14.3-43.el8.noarch
selinux-policy-doc-3.14.3-43.el8.noarch
selinux-policy-minimum-3.14.3-43.el8.noarch
selinux-policy-mls-3.14.3-43.el8.noarch
selinux-policy-sandbox-3.14.3-43.el8.noarch
selinux-policy-targeted-3.14.3-43.el8.noarch

How reproducible:
 * always

Steps to Reproduce:
1. get a RHEL-8.2 machine (targeted policy is active)
2. create a sysadm_u user
3. enable the xdm_sysadm_login boolean
4. log into X session as the sysadm_u user
5. click on Account Settings in the menu

Actual results (enforcing mode):
----
type=USER_AVC msg=audit(04/28/2020 13:48:04.224:1036) : pid=1044 uid=dbus auid=unset ses=unset subj=system_u:system_r:system_dbusd_t:s0-s0:c0.c1023 msg='avc:  denied  { send_msg } for msgtype=method_call interface=org.freedesktop.Accounts member=FindUserById dest=:1.1385 spid=15451 tpid=8747 scontext=sysadm_u:sysadm_r:sysadm_t:s0-s0:c0.c1023 tcontext=system_u:system_r:accountsd_t:s0 tclass=dbus permissive=0  exe=/usr/bin/dbus-daemon sauid=dbus hostname=? addr=? terminal=?' 
----
type=USER_AVC msg=audit(04/28/2020 13:48:09.130:1039) : pid=1044 uid=dbus auid=unset ses=unset subj=system_u:system_r:system_dbusd_t:s0-s0:c0.c1023 msg='avc:  denied  { send_msg } for msgtype=method_call interface=org.freedesktop.Accounts member=ListCachedUsers dest=:1.1385 spid=15451 tpid=8747 scontext=sysadm_u:sysadm_r:sysadm_t:s0-s0:c0.c1023 tcontext=system_u:system_r:accountsd_t:s0 tclass=dbus permissive=0  exe=/usr/bin/dbus-daemon sauid=dbus hostname=? addr=? terminal=?' 
----

Expected results:
 * no SELinux denials

Comment 1 Zdenek Pytela 2020-04-28 13:56:50 UTC
Milosi,

Apart from the denial, was there any problem or did the action continue?

These are rules we currently have in RHEL 8 for user domains:

rhel8# sesearch -A -s userdomain -t accountsd_t -c dbus -p send_msg
allow dbusd_unconfined nsswitch_domain:dbus send_msg;
allow dbusd_unconfined system_bus_type:dbus send_msg;
allow staff_usertype accountsd_t:dbus send_msg;
allow unconfined_t accountsd_t:dbus send_msg;
allow unconfined_t system_bus_type:dbus send_msg;
allow user_usertype accountsd_t:dbus send_msg;
allow xguest_usertype accountsd_t:dbus send_msg;
rhel8# sesearch --dontaudit -s userdomain -t accountsd_t -c dbus -p send_msg
dontaudit xguest_t system_bus_type:dbus send_msg;

Comment 2 Milos Malik 2020-04-28 14:24:47 UTC
The X session worked fine for the sysadm_u user. There were 2 additional denials related to gnome-keyring-daemon and gsd-rfkill, but that's all.

Comment 4 Zdenek Pytela 2020-06-24 16:30:43 UTC
I've submitted a Fedora PR to address the issue:
https://github.com/fedora-selinux/selinux-policy/pull/384

Comment 12 errata-xmlrpc 2020-11-04 01:56:37 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (selinux-policy bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:4528