Bug 843455 - munin_stats broken after upgrade to 6.3
Summary: munin_stats broken after upgrade to 6.3
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
unspecified
low
Target Milestone: rc
: 6.3
Assignee: Miroslav Grepl
QA Contact: Michal Trunecka
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2012-07-26 11:22 UTC by Alexander Kirillov
Modified: 2014-09-30 23:33 UTC (History)
7 users (show)

Fixed In Version: selinux-policy-3.7.19-182.el6
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2013-02-21 08:26:11 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
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

Description Alexander Kirillov 2012-07-26 11:22:04 UTC
Description of problem:

munin_stats plugin no longer works after upgrade to 6.3

Version-Release number of selected component (if applicable):

munin-node-1.4.7-5.el6.noarch
selinux-policy-targeted-3.7.19-155.el6_3.noarch

Additional info:

On a running system the problem could be fixed as follows:

1. Change the context of the plugin executable:

# semanage fcontext -a \
> -t munin_system_plugin_exec_t '/usr/share/munin/plugins/munin_.*'

Note:

Actually this should replace a meaningless rule for
'/usr/share/munin/plugins/munin_*' in the current targeted policy.

# restorecon -Rv /usr/share/munin

2. Add the following rules to a local policy:

type munin_system_plugin_t;
type munin_log_t;
type var_log_t;

allow munin_system_plugin_t var_log_t:dir search;
allow munin_system_plugin_t munin_log_t:dir search;
allow munin_system_plugin_t munin_log_t:file { read open };

Comment 1 d. johnson 2012-08-07 02:58:02 UTC
This looks like it may be a policy issue in el6, moving to there for comment.

Comment 3 Miroslav Grepl 2012-08-07 14:32:24 UTC
Yes, we need to backport it from Fedora.

Comment 4 Miroslav Grepl 2012-08-07 23:26:57 UTC
Fixed in selinux-policy-3.7.19-159.el6

Comment 5 Michal Trunecka 2012-09-24 13:59:19 UTC
Here is another AVC. I just let munin daemon run and I discovered this during some non-related tests:
selinux-policy-3.7.19-162.el6.noarch
munin-1.4.7-5.el6.noarch
munin-node-1.4.7-5.el6.noarch
munin-common-1.4.7-5.el6.noarch

----
time->Mon Sep 24 15:55:03 2012
type=PATH msg=audit(1348494903.742:2273): item=0 name="/var/lib/munin/plugin-state/munin_stats-127.0.0.1" inode=278001 dev=fd:00 mode=0100664 ouid=99 ogid=491 rdev=00:00 obj=unconfined_u:object_r:munin_plugin_state_t:s0
type=CWD msg=audit(1348494903.742:2273):  cwd="/"
type=SYSCALL msg=audit(1348494903.742:2273): arch=c000003e syscall=2 success=yes exit=3 a0=e56a50 a1=241 a2=1b6 a3=7f1d58f21be0 items=1 ppid=31621 pid=31795 auid=0 uid=99 gid=491 euid=99 suid=99 fsuid=99 egid=491 sgid=491 fsgid=491 tty=(none) ses=8 comm="munin_stats" exe="/usr/bin/perl" subj=unconfined_u:system_r:munin_t:s0 key=(null)
type=AVC msg=audit(1348494903.742:2273): avc:  denied  { write } for  pid=31795 comm="munin_stats" name="munin_stats-127.0.0.1" dev=dm-0 ino=278001 scontext=unconfined_u:system_r:munin_t:s0 tcontext=unconfined_u:object_r:munin_plugin_state_t:s0 tclass=file

Comment 10 Miroslav Grepl 2012-11-27 14:50:08 UTC
Fixed in selinux-policy-3.7.19-182.el6

# sesearch -A -s munin_t -t munin_t -c capability -p kill
Found 1 semantic av rules:
   allow munin_t munin_t : capability { chown dac_override kill setgid setuid sys_rawio } ;

Comment 11 Michal Trunecka 2012-11-28 08:07:30 UTC
And what about the rule from Comment 7?

 allow munin_system_plugin_t munin_log_t:dir search;

Comment 12 Miroslav Grepl 2012-11-28 08:31:48 UTC
Should be also fixed.

Comment 15 errata-xmlrpc 2013-02-21 08:26:11 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


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