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Bug 1516513 - SELinux is preventing /usr/bin/ps from using the sys_ptrace capability after installing pcp-zeroconf
Summary: SELinux is preventing /usr/bin/ps from using the sys_ptrace capability after ...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: selinux-policy
Version: 7.4
Hardware: All
OS: Linux
unspecified
low
Target Milestone: rc
: ---
Assignee: Lukas Vrabec
QA Contact: Milos Malik
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2017-11-22 19:34 UTC by Ugo Bellavance
Modified: 2019-04-29 09:19 UTC (History)
5 users (show)

Fixed In Version: selinux-policy-3.13.1-203.el7
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2018-10-30 10:01:27 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2018:3111 0 None None None 2018-10-30 10:01:53 UTC

Description Ugo Bellavance 2017-11-22 19:34:03 UTC 
Description of problem:


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


How reproducible: Always


Steps to Reproduce:
1. Install a fully updated RHEL 7 system
2. yum install pcp-zeroconf

Actual results:

Flood of these messages in /var/log/audit/audit.llog

type=AVC msg=audit(1511377855.877:231357): avc:  denied  { sys_ptrace } for  pid=15985 comm="ps" capability=19  scontext=system_u:system_r:pcp_pmie_t:s0 tcontext=system_u:system_r:pcp_pmie_t:s0 tclass=capability

Setroubleshoot sends an email with this text:

SELinux is preventing /usr/bin/ps from using the sys_ptrace capability.

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

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

Additional Information:
Source Context                system_u:system_r:pcp_pmie_t:s0
Target Context                system_u:system_r:pcp_pmie_t:s0
Target Objects                Unknown [ capability ]
Source                        ps
Source Path                   /usr/bin/ps
Port                          <Unknown>
Host                          atqvcslab1.atqlan.agri-tracabilite.qc.ca
Source RPM Packages           procps-ng-3.3.10-16.el7.x86_64
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-166.el7_4.5.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     atqvcslab1.atqlan.agri-tracabilite.qc.ca
Platform                      Linux atqvcslab1.atqlan.agri-tracabilite.qc.ca
                              3.10.0-693.5.2.el7.x86_64 #1 SMP Fri Oct 13
                              10:46:25 EDT 2017 x86_64 x86_64
Alert Count                   1
First Seen                    2017-11-22 14:10:55 EST
Last Seen                     2017-11-22 14:10:55 EST
Local ID                      1d21cb40-e9d1-4009-b56b-211c96b730f7

Raw Audit Messages
type=AVC msg=audit(1511377855.877:231357): avc:  denied  { sys_ptrace } for  pid=15985 comm="ps" capability=19  scontext=system_u:system_r:pcp_pmie_t:s0 tcontext=system_u:system_r:pcp_pmie_t:s0 tclass=capability


type=SYSCALL msg=audit(1511377855.877:231357): arch=x86_64 syscall=readlink success=no exit=EACCES a0=7ffcf3131050 a1=7fb814ef2440 a2=7f a3=4 items=0 ppid=15908 pid=15985 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm=ps exe=/usr/bin/ps subj=system_u:system_r:pcp_pmie_t:s0 key=(null)

Hash: ps,pcp_pmie_t,pcp_pmie_t,capability,sys_ptrace
Comment 3 Milos Malik 2018-06-11 06:24:40 UTC 
Shouldn't this be handled in pcp-selinux package, which is shipped together with other pcp packages?
Comment 7 errata-xmlrpc 2018-10-30 10:01:27 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-2018:3111
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