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Bug 1508659 - SELinux is preventing ypbind from 'write' accesses on the sock_file rpcbind.sock.
Summary: SELinux is preventing ypbind from 'write' accesses on the sock_file rpcbind.s...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: selinux-policy
Version: 27
Hardware: x86_64
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Lukas Vrabec
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: abrt_hash:9e943165860987242cce2090627...
: 1498305 1508992 (view as bug list)
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2017-11-01 22:27 UTC by Craig Robson
Modified: 2018-01-02 16:49 UTC (History)
12 users (show)

Fixed In Version: selinux-policy-3.13.1-283.19.fc27
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2018-01-02 16:49:10 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)

Description Craig Robson 2017-11-01 22:27:06 UTC 
Description of problem:
Attempting to start ypbind.
SELinux is preventing ypbind from 'write' accesses on the sock_file rpcbind.sock.

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

If you believe that ypbind should be allowed write access on the rpcbind.sock sock_file 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 'ypbind' --raw | audit2allow -M my-ypbind
# semodule -X 300 -i my-ypbind.pp

Additional Information:
Source Context                system_u:system_r:ypbind_t:s0
Target Context                system_u:object_r:rpcbind_var_run_t:s0
Target Objects                rpcbind.sock [ sock_file ]
Source                        ypbind
Source Path                   ypbind
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-283.10.fc27.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 4.13.8-300.fc27.x86_64 #1 SMP Wed
                              Oct 18 15:32:19 UTC 2017 x86_64 x86_64
Alert Count                   7
First Seen                    2017-10-23 13:04:15 PDT
Last Seen                     2017-10-23 13:04:15 PDT
Local ID                      62174613-448b-479f-bac6-c094bfd14db9

Raw Audit Messages
type=AVC msg=audit(1508789055.832:354): avc:  denied  { write } for  pid=9716 comm="ypbind" name="rpcbind.sock" dev="tmpfs" ino=15299 scontext=system_u:system_r:ypbind_t:s0 tcontext=system_u:object_r:rpcbind_var_run_t:s0 tclass=sock_file permissive=0


Hash: ypbind,ypbind_t,rpcbind_var_run_t,sock_file,write

Version-Release number of selected component:
selinux-policy-3.13.1-283.10.fc27.noarch

Additional info:
component:      selinux-policy
reporter:       libreport-2.9.2
hashmarkername: setroubleshoot
kernel:         4.13.9-300.fc27.x86_64
type:           libreport
Comment 1 Michael J. Chudobiak 2017-11-27 14:29:39 UTC 
See also bug 1508992.
Comment 2 Lukas Vrabec 2017-12-11 16:21:10 UTC 
*** Bug 1508992 has been marked as a duplicate of this bug. ***
Comment 3 Fedora Update System 2017-12-13 08:28:48 UTC 
selinux-policy-3.13.1-283.18.fc27 has been submitted as an update to Fedora 27. https://bodhi.fedoraproject.org/updates/FEDORA-2017-8225c4e502
Comment 4 Fedora Update System 2017-12-14 11:13:17 UTC 
selinux-policy-3.13.1-283.18.fc27 has been pushed to the Fedora 27 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-8225c4e502
Comment 5 Thomas Sailer 2017-12-14 17:47:16 UTC 
selinux-policy-targeted-3.13.1-283.18.fc27.noarch does not seem to work for me, I still get:

type=AVC msg=audit(1513272922.865:370): avc:  denied  { write } for  pid=3124 comm="ypbind" name="rpcbind.sock" dev="tmpfs" ino=1904 scontext=system_u:system_r:ypbind_t:s0 tcontext=system_u:object_r:rpcbind_var_run_t:s0 tclass=sock_file permissive=0


#============= ypbind_t ==============
allow ypbind_t rpcbind_var_run_t:sock_file write;
Comment 6 Petr Kubat 2017-12-15 07:51:08 UTC 
*** Bug 1498305 has been marked as a duplicate of this bug. ***
Comment 7 Lukas Vrabec 2017-12-18 08:45:47 UTC 
Thoms, 

You're right, I forgot to push it to F27. Will be fixed in next update. Sorry for that.
Comment 8 Lukas Vrabec 2017-12-18 08:46:44 UTC 
https://github.com/fedora-selinux/selinux-policy-contrib/commit/f91260231fde4e5171b3753bea501ac1f2bb40e2
Comment 9 Fedora Update System 2017-12-20 11:26:37 UTC 
selinux-policy-3.13.1-283.19.fc27 has been submitted as an update to Fedora 27. https://bodhi.fedoraproject.org/updates/FEDORA-2017-8225c4e502
Comment 10 Eric 2017-12-20 19:47:06 UTC 
selinux-policy-3.13.1-283.19.fc27 still does not work for me on two machines.

Dec 20 11:45:21 box setroubleshoot[3441]: failed to retrieve rpm info for /run/rpcbind.sock
Dec 20 11:45:22 box setroubleshoot[3441]: SELinux is preventing ypbind from connectto access on the unix_stream_socket /run/rpcbind.sock. For complete SELinux messages run: sealert -l 55305654-835a-432c-8c46-bacaf230a389
Dec 20 11:45:22 box python3[3441]: SELinux is preventing ypbind from connectto access on the unix_stream_socket /run/rpcbind.sock.
                                     
                                     *****  Plugin catchall_boolean (89.3 confidence) suggests   ******************
                                     
                                     If you want to allow daemons to enable cluster mode
                                     Then you must tell SELinux about this by enabling the 'daemons_enable_cluster_mode' boolean.
                                     
                                     Do
                                     setsebool -P daemons_enable_cluster_mode 1
                                     
                                     *****  Plugin catchall (11.6 confidence) suggests   **************************
                                     
                                     If you believe that ypbind should be allowed connectto access on the rpcbind.sock unix_stream_socket 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 'ypbind' --raw | audit2allow -M my-ypbind
                                     # semodule -X 300 -i my-ypbind.pp
Comment 11 Eric 2017-12-20 22:34:50 UTC 
Correction: still broken on three out of three machines.
Comment 12 Francesco Simula 2017-12-21 17:20:18 UTC 
(In reply to Fedora Update System from comment #9)
> selinux-policy-3.13.1-283.19.fc27 has been submitted as an update to Fedora
> 27. https://bodhi.fedoraproject.org/updates/FEDORA-2017-8225c4e502

I can confirm that selinux-policy-3.13.1-283.19.fc27 fixes the problem for me on the 3 boxes I tried it on.
Comment 13 Francesco Simula 2017-12-21 17:22:35 UTC 
(In reply to Eric from comment #10)
> selinux-policy-3.13.1-283.19.fc27 still does not work for me on two machines.
> 
> Dec 20 11:45:21 box setroubleshoot[3441]: failed to retrieve rpm info for
> /run/rpcbind.sock
> Dec 20 11:45:22 box setroubleshoot[3441]: SELinux is preventing ypbind from
> connectto access on the unix_stream_socket /run/rpcbind.sock. For complete
> SELinux messages run: sealert -l 55305654-835a-432c-8c46-bacaf230a389
> Dec 20 11:45:22 box python3[3441]: SELinux is preventing ypbind from
> connectto access on the unix_stream_socket /run/rpcbind.sock.
>                                      
>                                      *****  Plugin catchall_boolean (89.3
> confidence) suggests   ******************
>                                      
>                                      If you want to allow daemons to enable
> cluster mode
>                                      Then you must tell SELinux about this
> by enabling the 'daemons_enable_cluster_mode' boolean.
>                                      
>                                      Do
>                                      setsebool -P
> daemons_enable_cluster_mode 1
>                                      
>                                      *****  Plugin catchall (11.6
> confidence) suggests   **************************
>                                      
>                                      If you believe that ypbind should be
> allowed connectto access on the rpcbind.sock unix_stream_socket 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 'ypbind' --raw |
> audit2allow -M my-ypbind
>                                      # semodule -X 300 -i my-ypbind.pp

I had the same alert, which disappeared as soon as I issued "setsebool -P daemons_enable_cluster_mode 1" - can someone explain what "daemons_enable_cluster_mode" is about?
Comment 14 Fedora Update System 2017-12-21 20:22:18 UTC 
selinux-policy-3.13.1-283.19.fc27 has been pushed to the Fedora 27 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-8225c4e502
Comment 15 Fedora Update System 2018-01-02 16:49:10 UTC 
selinux-policy-3.13.1-283.19.fc27 has been pushed to the Fedora 27 stable repository. If problems still persist, please make note of it in this bug report.
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