Bug 678466

Summary: SELinux is preventing auditd from 'sendto' accesses on the unix_dgram_socket /dev/log.
Product: [Fedora] Fedora Reporter: Luya Tshimbalanga <luya>
Component: selinux-policyAssignee: Miroslav Grepl <mgrepl>
Status: CLOSED INSUFFICIENT_DATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: dwalsh, jlayton, mgrepl, vondruch
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard: setroubleshoot_trace_hash:7b9893d3124a64663746190ab3f6d248e7605ef3b593de5ee95647f4164c7253
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-05-26 20:48:29 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description Luya Tshimbalanga 2011-02-18 03:21:49 UTC
SELinux is preventing auditd from 'sendto' accesses on the unix_dgram_socket /dev/log.

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

If you believe that auditd should be allowed sendto access on the log unix_dgram_socket 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:
# grep auditd /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:auditd_t:s0
Target Context                system_u:system_r:initrc_t:s0
Target Objects                /dev/log [ unix_dgram_socket ]
Source                        auditd
Source Path                   auditd
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.9.14-2.fc15
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed)
                              2.6.38-0.rc4.git7.1.fc15.i686 #1 SMP Mon Feb 14
                              01:26:37 UTC 2011 i686 i686
Alert Count                   5
First Seen                    Thu 17 Feb 2011 10:25:28 AM PST
Last Seen                     Thu 17 Feb 2011 07:16:08 PM PST
Local ID                      7d7e4f97-1048-419e-89ac-7573ed157e25

Raw Audit Messages
type=AVC msg=audit(1297998968.190:437): avc:  denied  { sendto } for  pid=897 comm="auditd" path="/dev/log" scontext=system_u:system_r:auditd_t:s0 tcontext=system_u:system_r:initrc_t:s0 tclass=unix_dgram_socket


Hash: auditd,auditd_t,initrc_t,unix_dgram_socket,sendto

audit2allow

#============= auditd_t ==============
allow auditd_t initrc_t:unix_dgram_socket sendto;

audit2allow -R

#============= auditd_t ==============
allow auditd_t initrc_t:unix_dgram_socket sendto;

Comment 1 Miroslav Grepl 2011-02-18 11:56:44 UTC
Looks like syslog is running as initrc_t domain. What is your output of

# ps -eZ | grep syslog

# ls -lZ /sbin/rsyslogd

# matchpathcon /sbin/rsyslogd

Comment 2 Luya Tshimbalanga 2011-02-18 18:44:19 UTC
# ps -eZ | grep syslog
system_u:system_r:syslogd_t:s0    855 ?        00:00:22 rsyslogd

# ls -lZ /sbin/rsyslogd
-rwxr-xr-x. root root system_u:object_r:syslogd_exec_t:s0 /sbin/rsyslogd

# matchpathcon /sbin/rsyslogd
/sbin/rsyslogd	system_u:object_r:syslogd_exec_t:s0

Comment 3 Daniel Walsh 2011-02-18 20:26:38 UTC
ps -eZ | grep initrc_t

It looks like something at sometime was running as initrc_t and listening on /dev/log.