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Bug 1504826

Summary: SELinux is preventing nrpe_t from accessing nfs_t
Product: Red Hat Enterprise Linux 7 Reporter: Coby Isley <cisley>
Component: selinux-policyAssignee: Lukas Vrabec <lvrabec>
Status: CLOSED ERRATA QA Contact: Milos Malik <mmalik>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.4CC: lvrabec, mgrepl, mmalik, plautrba, ssekidde
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: selinux-policy-3.13.1-175.el7 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2018-04-10 12:44:59 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 Coby Isley 2017-10-20 17:54:45 UTC
Description of problem:

=================

Commands running with a context of nrpe_t are unable to access nfs shares:

SELinux is preventing df from read access on the directory <customer directory>.

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

If you believe that df should be allowed read access on the <customer directory> directory 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 'df' --raw | audit2allow -M my-df
# semodule -i my-df.pp


Additional Information:
Source Context                system_u:system_r:nrpe_t:s0
Target Context                system_u:object_r:nfs_t:s0
Target Objects                <customer directory> [ dir ]
Source                        df
Source Path                   df
Port                          <Unknown>
Host                          <Unknown>
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-166.el7_4.4.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     r74.example.com
Platform                      Linux r74.example.com 3.10.0-693.el7.x86_64 #1 SMP
                              Thu Jul 6 19:56:57 EDT 2017 x86_64 x86_64
Alert Count                   1
First Seen                    2017-10-09 10:34:54 EDT
Last Seen                     2017-10-09 10:34:54 EDT
Local ID                      408d59ba-9a37-4d56-90bd-3374e76fb12e

Raw Audit Messages
type=AVC msg=audit(1507559694.203:28842): avc:  denied  { read } for  pid=16514 comm=df name=<customer directory> dev=0:53 ino=10133099161602582 scontext=system_u:system_r:nrpe_t:s0 tcontext=system_u:object_r:nfs_t:s0 tclass=dir


Hash: df,nrpe_t,nfs_t,dir,read

--------------------------------------------------------------------------------

SELinux is preventing bash from getattr access on the directory <customer directory>.

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

If you believe that bash should be allowed getattr access on the <customer directory> directory 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 'bash' --raw | audit2allow -M my-bash
# semodule -i my-bash.pp


Additional Information:
Source Context                system_u:system_r:nrpe_t:s0
Target Context                system_u:object_r:nfs_t:s0
Target Objects                <customer directory> [ dir ]
Source                        bash
Source Path                   bash
Port                          <Unknown>
Host                          <Unknown>
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-166.el7_4.4.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     r74.example.com
Platform                      Linux r74.example.com 3.10.0-693.el7.x86_64 #1 SMP
                              Thu Jul 6 19:56:57 EDT 2017 x86_64 x86_64
Alert Count                   1
First Seen                    2017-10-09 10:44:54 EDT
Last Seen                     2017-10-09 10:44:54 EDT
Local ID                      75358116-3732-4c64-8a9f-1fb514ffda96

Raw Audit Messages
type=AVC msg=audit(1507560294.515:28866): avc:  denied  { getattr } for  pid=18076 comm=bash path=<customer directory> dev=0:53 ino=83879543059790439 scontext=system_u:system_r:nrpe_t:s0 tcontext=system_u:object_r:nfs_t:s0 tclass=dir


Hash: bash,nrpe_t,nfs_t,dir,getattr

=================

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

selinux-policy-3.13.1-166.el7_4.4.noarch

Comment 3 Lukas Vrabec 2017-10-22 13:58:57 UTC
Looks like we need new boolean here, where nrpe domain could access nfs.

Comment 10 errata-xmlrpc 2018-04-10 12:44:59 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