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Bug 1490961 - [AVC denied] /usr/libexec/rhsmcertd-worker (rhsmcertd_t) sends signull to snmpd_t
Summary: [AVC denied] /usr/libexec/rhsmcertd-worker (rhsmcertd_t) sends signull to snm...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: selinux-policy
Version: 7.4
Hardware: x86_64
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Lukas Vrabec
QA Contact: Milos Malik
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2017-09-12 15:19 UTC by Michal Dekan
Modified: 2021-06-10 13:01 UTC (History)
7 users (show)

Fixed In Version: selinux-policy-3.13.1-175.el7
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2018-04-10 12:42:01 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
Temporary workaround works in case 01925369 (182 bytes, text/plain)
2017-09-20 08:14 UTC, Jan Jansky 		no flags Details
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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2018:0763 0 None None None 2018-04-10 12:42:56 UTC

Description Michal Dekan 2017-09-12 15:19:32 UTC 
Description of problem:

 > grep AVC var/log/audit/audit.log | grep rhsmcertd_t
type=AVC msg=audit(1504534843.134:211675): avc:  denied  { signull } for  pid=34390 comm="rhsmcertd-worke" scontext=system_u:system_r:rhsmcertd_t:s0 tcontext=system_u:system_r:snmpd_t:s0 tclass=process
type=AVC msg=audit(1504549243.119:214055): avc:  denied  { signull } for  pid=47588 comm="rhsmcertd-worke" scontext=system_u:system_r:rhsmcertd_t:s0 tcontext=system_u:system_r:snmpd_t:s0 tclass=process
type=AVC msg=audit(1504563643.494:216440): avc:  denied  { signull } for  pid=60721 comm="rhsmcertd-worke" scontext=system_u:system_r:rhsmcertd_t:s0 tcontext=system_u:system_r:snmpd_t:s0 tclass=process
type=AVC msg=audit(1504578043.791:218815): avc:  denied  { signull } for  pid=8813 comm="rhsmcertd-worke" scontext=system_u:system_r:rhsmcertd_t:s0 tcontext=system_u:system_r:snmpd_t:s0 tclass=process
type=AVC msg=audit(1504592443.288:221212): avc:  denied  { signull } for  pid=23019 comm="rhsmcertd-worke" scontext=system_u:system_r:rhsmcertd_t:s0 tcontext=system_u:system_r:snmpd_t:s0 tclass=process
type=AVC msg=audit(1504606843.105:223597): avc:  denied  { signull } for  pid=36091 comm="rhsmcertd-worke" scontext=system_u:system_r:rhsmcertd_t:s0 tcontext=system_u:system_r:snmpd_t:s0 tclass=process
type=AVC msg=audit(1504621243.569:225957): avc:  denied  { signull } for  pid=49303 comm="rhsmcertd-worke" scontext=system_u:system_r:rhsmcertd_t:s0 tcontext=system_u:system_r:snmpd_t:s0 tclass=process
type=AVC msg=audit(1504635643.773:228343): avc:  denied  { signull } for  pid=63246 comm="rhsmcertd-worke" scontext=system_u:system_r:rhsmcertd_t:s0 tcontext=system_u:system_r:snmpd_t:s0 tclass=process



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

> cat etc/redhat-release 
Red Hat Enterprise Linux Server release 7.4 (Maipo)

> grep selinux installed-rpms 
libselinux-2.5-11.el7.i686                                  Sat Aug 19 22:40:27 2017
libselinux-2.5-11.el7.x86_64                                Sat Aug 19 22:36:22 2017
libselinux-python-2.5-11.el7.x86_64                         Sat Aug 19 22:37:38 2017
libselinux-utils-2.5-11.el7.x86_64                          Sat Aug 19 22:38:23 2017
selinux-policy-3.13.1-166.el7.noarch                        Sat Aug 19 22:41:45 2017
selinux-policy-targeted-3.13.1-166.el7.noarch               Sat Aug 19 22:44:54 2017



How reproducible:

Not sure.

There is no rule, which would allow this:

[root@vm-199 ~]# sesearch -A -s rhsmcertd_t -t snmpd_t -p signull

[root@vm-199 ~]# 

Actual results:

AVC denied messages in audit log.

Expected results:

No AVC denied messages.

Additional info:

Customer's sosreport is attached to the case.
Comment 3 Jan Jansky 2017-09-20 08:14:09 UTC 
Created attachment 1328304 [details]
Temporary workaround works in case 01925369

Created temporary workaround with audit2allow -M rhsmcertd.t -i sosreport/var/log/audit.log

It works for customer from case 01925369, however i am not specialist in SELinux, can someone check if this policy is correct and why the audit happened?
Comment 7 yuk 2018-03-21 11:14:03 UTC 
==> Status: ON_QA → VERIFIED

Are the correct rpms available on RH repos?
Comment 8 Milos Malik 2018-03-21 11:45:33 UTC 
RPMs with the fix will be available in RH repositories as soon as RHEL-7.5 goes public.
Comment 10 errata-xmlrpc 2018-04-10 12:42:01 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.

https://access.redhat.com/errata/RHBA-2018:0763
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