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Bug 1697808

Summary: pmlogger - SELinux is preventing /usr/bin/cp from using the fowner capability
Product: Red Hat Enterprise Linux 7 Reporter: Steffen Froemer <sfroemer>
Component: pcpAssignee: pcp-maint <pcp-maint>
Status: CLOSED DUPLICATE QA Contact: qe-baseos-tools-bugs
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.6CC: 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 07:28:53 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 07:13:28 UTC
Description of problem:
SELinux is preventing /usr/bin/cp from using the fowner capability.


Version-Release number of selected component (if applicable):
selinux-policy-3.13.1-229.el7_6.9.noarch
xz-5.2.2-1.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1.
2.
3.

Actual results:
SELinux is preventing /usr/bin/cp from using the fowner capability.

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

If you believe that cp should have the fowner 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 'cp' --raw | audit2allow -M my-cp
# semodule -i my-cp.pp


Additional Information:
Source Context                system_u:system_r:pcp_pmlogger_t:s0
Target Context                system_u:system_r:pcp_pmlogger_t:s0
Target Objects                Unknown [ capability ]
Source                        cp
Source Path                   /usr/bin/cp
Port                          <Unknown>
Host                          host1.example.com
Source RPM Packages           xz-5.2.2-1.el7.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.example.com
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                   3
First Seen                    2019-04-08 09:01:21 UTC
Last Seen                     2019-04-08 09:01:23 UTC
Local ID                      e7c9f6ac-1f40-4569-b633-9075667dd71c

Raw Audit Messages
type=AVC msg=audit(1554714083.157:162): avc:  denied  { fowner } for  pid=18934 comm="xz" capability=3  scontext=system_u:system_r:pcp_pmlogger_t:s0 tcontext=system_u:system_r:pcp_pmlogger_t:s0 tclass=capability permissive=0


type=SYSCALL msg=audit(1554714083.157:162): arch=x86_64 syscall=utimensat success=no exit=EPERM a0=6 a1=0 a2=7ffea3ad1160 a3=0 items=0 ppid=18932 pid=18934 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm=xz exe=/usr/bin/xz subj=system_u:system_r:pcp_pmlogger_t:s0 key=(null)

Hash: cp,pcp_pmlogger_t,pcp_pmlogger_t,capability,fowner

Expected results:
should work

Additional info:

Comment 2 Nathan Scott 2019-04-10 07:28:53 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 ***