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DescriptionVinzenz Feenstra [evilissimo]
2012-12-09 12:21:09 UTC
Description of problem:
selinux prevents the access of the rhevm-guest-agent-gdm-plugin to connect to the SO_PASSCRED unix domain socket ('\x00/tmp/ovirt-cred-channel').
The unix domain socket is created by the service: ovirt-guest-agent from the package: rhevm-guest-agent
Audit log entry:
type=AVC msg=audit(1355047156.839:26940): avc: denied { connectto } for pid=11187 comm="gdm-session-wor" path=002F746D702F6F766972742D637265642D6368616E6E656C scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:initrc_t:s0 tclass=unix_stream_socket
Version-Release number of selected component (if applicable):
rhevm-guest-agent-1.0.5-7
How reproducible:
Always reproducible with selinux-policy-3.7.19-155
Steps to Reproduce:
1. Setup a RHEV-M Environment
2. Create a RHEL6.3 Desktop VM with rhevm-guest-agent-gdm-plugin installed
3. Join the computer to the domain
4. Single sign on from the user portal will not complete.
Actual results:
Single Sign on is not working because the access to the credential socket is blocked.
Expected results:
Access to the socket is not blocked.
Additional info:
Temporary workaround for affected users:
# grep 002F746D702F6F766972742D637265642D6368616E6E656C /var/log/audit/audit.log | audit2allow -M ovirt-guest-agent
# semodule -i ovirt-guest-agent.pp
Comment 1Vinzenz Feenstra [evilissimo]
2012-12-09 12:24:19 UTC
Please note that the package rhevm-guest-agent was previously known as rhev-agent.
The package rhevm-guest-agent-gdm-plugin was previously known as rhev-agent-gdm-plugin-rhevcred.
Correction: The problem occurs within the SSO PAM module - rhevm-guest-agent-pam-module (Previously known as rhev-agent-pam-rhev-cred)
Comment 3Vinzenz Feenstra [evilissimo]
2012-12-09 13:23:59 UTC
Additional note:
The rhevm-guest-agent-kdm-plugin package is also affected by this. The workaround mentioned in comment#0 works for it as well.
You can test it for now using
# chcon -t rhev_agentd_exec_t /usr/share/ovirt-guest-agent/ovirt-guest-agent.py
Also please updat to the latest policy build.
rhnsd deamon should be confined.
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, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
http://rhn.redhat.com/errata/RHBA-2013-0314.html
Description of problem: selinux prevents the access of the rhevm-guest-agent-gdm-plugin to connect to the SO_PASSCRED unix domain socket ('\x00/tmp/ovirt-cred-channel'). The unix domain socket is created by the service: ovirt-guest-agent from the package: rhevm-guest-agent Audit log entry: type=AVC msg=audit(1355047156.839:26940): avc: denied { connectto } for pid=11187 comm="gdm-session-wor" path=002F746D702F6F766972742D637265642D6368616E6E656C scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:initrc_t:s0 tclass=unix_stream_socket Version-Release number of selected component (if applicable): rhevm-guest-agent-1.0.5-7 How reproducible: Always reproducible with selinux-policy-3.7.19-155 Steps to Reproduce: 1. Setup a RHEV-M Environment 2. Create a RHEL6.3 Desktop VM with rhevm-guest-agent-gdm-plugin installed 3. Join the computer to the domain 4. Single sign on from the user portal will not complete. Actual results: Single Sign on is not working because the access to the credential socket is blocked. Expected results: Access to the socket is not blocked. Additional info: Temporary workaround for affected users: # grep 002F746D702F6F766972742D637265642D6368616E6E656C /var/log/audit/audit.log | audit2allow -M ovirt-guest-agent # semodule -i ovirt-guest-agent.pp