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Bug 1697811

Summary:	[SELinux AVC Alert] SELinux is preventing /var/lib/pcp/pmdas/linux/pmdalinux from using the ipc_owner capability
Product:	Red Hat Enterprise Linux 7	Reporter:	Steffen Froemer <sfroemer>
Component:	pcp	Assignee:	pcp-maint <pcp-maint>
Status:	CLOSED DUPLICATE	QA Contact:	qe-baseos-tools-bugs
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	7.6	CC:	fche, lberk, mgoodwin, nathans, patrickm
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-04-10 07:28:16 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Steffen Froemer 2019-04-09 07:17:31 UTC

Description of problem:
SELinux is preventing /var/lib/pcp/pmdas/linux/pmdalinux from using the ipc_owner capability

Version-Release number of selected component (if applicable):
selinux-policy-3.13.1-229.el7_6.9.noarch
pcp-4.1.0-5.el7_6.x86_64

How reproducible:
100%

Steps to Reproduce:
1.
2.
3.

Actual results:
SELinux is preventing /var/lib/pcp/pmdas/linux/pmdalinux from using the ipc_owner capability.

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

If you believe that pmdalinux should have the ipc_owner capability 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:
# ausearch -c 'pmdalinux' --raw | audit2allow -M my-pmdalinux
# semodule -i my-pmdalinux.pp


Additional Information:
Source Context                system_u:system_r:pcp_pmcd_t:s0
Target Context                system_u:system_r:pcp_pmcd_t:s0
Target Objects                Unknown [ capability ]
Source                        pmdalinux
Source Path                   /var/lib/pcp/pmdas/linux/pmdalinux
Port                          <Unknown>
Host                          host1
Source RPM Packages           pcp-4.1.0-5.el7_6.x86_64
Target RPM Packages
Policy RPM                    selinux-policy-3.13.1-229.el7_6.9.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     host1
Platform                      Linux host1 3.10.0-957.10.1.el7.x86_64 #1 SMP
                              Thu Feb 7 07:12:53 UTC 2019 x86_64 x86_64
Alert Count                   19
First Seen                    2019-04-08 09:01:20 UTC
Last Seen                     2019-04-08 09:09:20 UTC
Local ID                      cf4595ae-16d4-48d9-9e5e-a5c5d9b0678e

Raw Audit Messages
type=AVC msg=audit(1554714560.310:809): avc:  denied  { ipc_owner } for  pid=6729 comm="pmdalinux" capability=15  scontext=system_u:system_r:pcp_pmcd_t:s0 tcontext=system_u:system_r:pcp_pmcd_t:s0 tclass=capability permissive=0


type=SYSCALL msg=audit(1554714560.310:809): arch=x86_64 syscall=semctl success=no exit=EACCES a0=6 a1=0 a2=12 a3=7ffce305d100 items=0 ppid=6696 pid=6729 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm=pmdalinux exe=/var/lib/pcp/pmdas/linux/pmdalinux subj=system_u:system_r:pcp_pmcd_t:s0 key=(null)

Hash: pmdalinux,pcp_pmcd_t,pcp_pmcd_t,capability,ipc_owner

Expected results:


Additional info:

Comment 2 Steffen Froemer 2019-04-09 09:06:26 UTC

looks like Fedora BZ https://bugzilla.redhat.com/show_bug.cgi?id=1655282

Comment 3 Nathan Scott 2019-04-10 07:28:16 UTC

Thanks for the report Steffen.  I've verified that AVC is resolved in more recent PCP selinux-policy versions and the fix will be in RHEL 7.7 (via rebase).

*** This bug has been marked as a duplicate of bug 1647308 ***