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 849671 - SELinux doesn't allow /etc/init.d/clamd.amavisd to write PID file
Summary: SELinux doesn't allow /etc/init.d/clamd.amavisd to write PID file
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: selinux-policy
Version: 6.3
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Miroslav Grepl
QA Contact: Milos Malik
URL:
Whiteboard:
Depends On:
Blocks: 782183
TreeView+ depends on / blocked
 
Reported: 2012-08-20 14:07 UTC by Robert Scheck
Modified: 2018-11-30 21:32 UTC (History)
4 users (show)

Fixed In Version: selinux-policy-3.7.19-160.el6
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2013-02-21 08:27:54 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Bugzilla 837138 1 None None None 2021-01-20 06:05:38 UTC
Red Hat Product Errata RHBA-2013:0314 0 normal SHIPPED_LIVE selinux-policy bug fix and enhancement update 2013-02-20 20:35:01 UTC

Internal Links: 837138

Description Robert Scheck 2012-08-20 14:07:40 UTC 
Description of problem:
SELinux doesn't allow /etc/init.d/clamd.amavisd to write PID into the file
/var/run/amavisd/clamd.pid. This results in an AVC denied simply:

type=AVC msg=audit(1345470879.621:762244): avc:  denied  { write } for  pid=5193 comm="clamd" name="clamd.pid" dev=vda1 ino=132411 scontext=unconfined_u:system_r:clamd_t:s0 tcontext=unconfined_u:object_r:amavis_var_run_t:s0 tclass=file
type=SYSCALL msg=audit(1345470879.621:762244): arch=c000003e syscall=2 success=no exit=-13 a0=13592a0 a1=241 a2=1b6 a3=0 items=0 ppid=5192 pid=5193 auid=0 uid=497 gid=497 euid=497 suid=497 fsuid=497 egid=497 sgid=497 fsgid=497 tty=(none) ses=7525 comm="clamd" exe="/usr/sbin/clamd" subj=unconfined_u:system_r:clamd_t:s0 key=(null)
type=AVC msg=audit(1345470992.363:762250): avc:  denied  { write } for  pid=5335 comm="clamd" name="clamd.pid" dev=vda1 ino=132411 scontext=unconfined_u:system_r:clamd_t:s0 tcontext=unconfined_u:object_r:amavis_var_run_t:s0 tclass=file
type=SYSCALL msg=audit(1345470992.363:762250): arch=c000003e syscall=2 success=yes exit=5 a0=1eec2a0 a1=241 a2=1b6 a3=0 items=0 ppid=5334 pid=5335 auid=0 uid=497 gid=497 euid=497 suid=497 fsuid=497 egid=497 sgid=497 fsgid=497 tty=(none) ses=7525 comm="clamd" exe="/usr/sbin/clamd" subj=unconfined_u:system_r:clamd_t:s0 key=(null)
type=AVC msg=audit(1345471059.628:762251): avc:  denied  { unlink } for  pid=5335 comm="clamd" name="clamd.pid" dev=vda1 ino=132411 scontext=unconfined_u:system_r:clamd_t:s0 tcontext=unconfined_u:object_r:amavis_var_run_t:s0 tclass=file
type=SYSCALL msg=audit(1345471059.628:762251): arch=c000003e syscall=87 success=yes exit=0 a0=1eec2a0 a1=419f40 a2=2 a3=fffffffffffff685 items=0 ppid=1 pid=5335 auid=0 uid=497 gid=497 euid=497 suid=497 fsuid=497 egid=497 sgid=497 fsgid=497 tty=(none) ses=7525 comm="clamd" exe="/usr/sbin/clamd" subj=unconfined_u:system_r:clamd_t:s0 key=(null)

If SELinux is enforced, /var/run/amavisd/clamd.pid is simply empty, thus any
attempt to restart clamd.amavisd simply fails (stopping fails because of empty
PID and starting fails because of socket is already/still used).

Version-Release number of selected component (if applicable):
amavisd-new-2.8.0-0.el6.noarch
clamav-0.97.5-1.el6.x86_64
selinux-policy-3.7.19-156.el6.noarch
selinux-policy-targeted-3.7.19-156.el6.noarch

The amavisd-new package is right now simply a backport from Fedora Rawhide,
but I definately will push this update to regular Fedora EPEL very soon. From
my point of view this issue is also not related to my amavisd-new update, but
a general issue with amavisd-new and clamav with the SELinux policy.

How reproducible:
Everytime, see above.

Actual results:
SELinux doesn't allow /etc/init.d/clamd.amavisd to write PID file

Expected results:
SELinux allows /etc/init.d/clamd.amavisd to write PID file
Comment 2 Milos Malik 2012-08-20 15:16:42 UTC 
# matchpathcon /var/run/amavisd/clamd.pid
/var/run/amavisd/clamd.pid	system_u:object_r:clamd_var_run_t:s0
#

What does "restorecon -v /var/run/amavisd" on your machine?
Comment 3 Robert Scheck 2012-08-20 15:35:39 UTC 
$ matchpathcon /var/run/amavisd/clamd.pid
/var/run/amavisd/clamd.pid	system_u:object_r:clamd_var_run_t:s0
$

$ restorecon -v /var/run/amavisd
$
Comment 4 Robert Scheck 2012-08-20 15:38:58 UTC 
Please keep in mind that /etc/init.d/clamd.amavisd calls the wrapper script
/etc/init.d/clamd.amavisd which finally starts the clamd process.
Comment 5 Robert Scheck 2012-08-20 15:39:25 UTC 
*gna* the wrapper script is of course /usr/share/clamav/clamd-wrapper
Comment 6 Miroslav Grepl 2012-08-21 07:44:37 UTC 
We have some fixes in Fedora for this issue.
Comment 7 Robert Scheck 2012-08-21 17:17:51 UTC 
Yes, but this is unfortunately RHEL. When will these fixes be merged into RHEL 
selinux-policy? Will these get part (at latest) of RHEL 6.4 GA?
Comment 8 Miroslav Grepl 2012-08-24 14:03:59 UTC 
It will be part of a new RHEL6.4 build which will be available on http://people.redhat.com/dwalsh/ (as usual) next week.
Comment 10 William Lovaton 2012-09-18 16:08:17 UTC 
Great, let's hope it gets fixed in the next update of RHEL.  In the meantime I just loaded this policy and it seems to be working fine:

[nalwalovaton@CDPLIN80 ~]$ cat amavis-mypol.te 

module amavis-mypol 1.0;

require {
	type amavis_var_run_t;
	type clamd_t;
	class dir { write remove_name search add_name };
	class file { write unlink };
}

#============= clamd_t ==============
#!!!! The source type 'clamd_t' can write to a 'dir' of the following types:
# var_run_t, var_log_t, clamd_var_log_t, clamd_var_lib_t, clamd_var_run_t, clamd_tmp_t, amavis_spool_t, tmp_t, root_t

allow clamd_t amavis_var_run_t:dir { write remove_name search add_name };
allow clamd_t amavis_var_run_t:file { write unlink };
Comment 12 errata-xmlrpc 2013-02-21 08:27:54 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, 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
Note You need to log in before you can comment on or make changes to this bug.