Bug 1051461 - Selinux stops mod_passenger from working
Summary: Selinux stops mod_passenger from working
Keywords:
Status: CLOSED EOL
Alias: None
Product: Fedora EPEL
Classification: Fedora
Component: rubygem-passenger
Version: el6
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Brett Lentz
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-01-10 10:34 UTC by Matt Dainty
Modified: 2020-11-30 14:57 UTC (History)
6 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2020-11-30 14:57:24 UTC
Type: Bug
Embargoed:


Attachments (Terms of Use)
the generated puppet_passenger.pp file (2.99 KB, application/octet-stream)
2014-01-17 21:46 UTC, Johan De Wit
no flags Details
audit.log entries used with audit2allow (11.84 KB, text/plain)
2014-01-17 21:51 UTC, Johan De Wit
no flags Details

Description Matt Dainty 2014-01-10 10:34:56 UTC
Description of problem:

I'm trying to create a Puppetmaster using Apache and mod_passenger although I don't think the fact the application is Puppet matters at this point.

I'm using the Puppetlabs Puppet packages, standard EL6 Apache and the EPEL mod_passenger packages.

I'm using the default /etc/httpd/conf.d/passenger.conf which sets:

   PassengerRoot /usr/share/rubygems/gems/passenger-3.0.21
   PassengerRuby /usr/bin/ruby

Apache starts but as soon as I start an agent run against the Puppetmaster, the agent stops with a HTTP 500 error and the following is logged in /var/log/audit/audit.log:

type=AVC msg=audit(1389349283.934:224): avc:  denied  { write } for  pid=19148 comm="httpd" name="socket" dev=dm-0 ino=270945 scontext=unconfined_u:system_r:httpd_t:s0 tcontext=unconfined_u:object_r:passenger_tmp_t:s0 tclass=sock_file
type=SYSCALL msg=audit(1389349283.934:224): arch=c000003e syscall=42 success=no exit=-13 a0=b a1=7fff65052d50 a2=6e a3=746172656e65672f items=0 ppid=19127 pid=19148 auid=0 uid=48 gid=48 euid=48 suid=48 fsuid=48 egid=48 sgid=48 fsgid=48 tty=(none) ses=19 comm="httpd" exe="/usr/sbin/httpd" subj=unconfined_u:system_r:httpd_t:s0 key=(null)

The socket in question is under /tmp/passenger*/ which seems to be the default without me setting PassengerTempDir to anything. Disabling Selinux stops the error.

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

mod_passenger-3.0.21-5.el6.x86_64
selinux-policy-3.7.19-231.el6.noarch

How reproducible:

Always.

Steps to Reproduce:
1. Install mod_passenger and a suitable application
2. Try to access application
3. Error

Actual results:


Expected results:


Additional info:

Comment 1 Johan De Wit 2014-01-17 21:46:12 UTC
Created attachment 851804 [details]
the generated puppet_passenger.pp file

semodule -i puppet_passenger.pp

Should make puppet/passenger working.

Comment 2 Johan De Wit 2014-01-17 21:49:42 UTC
mod_passenger-3.0.21-11.el6.x86_64 from testing (mod_passenger-3.0.21-5.el6.x86_64 does work properly, see bug https://bugzilla.redhat.com/show_bug.cgi?id=999384)

selinux-policy-3.7.19-231.el6.noarch

====  The puppet_passenger.te file
module puppet_passenger 1.0;

require {
        type user_tmp_t;
        type locale_t;
        type passenger_t;
        type ifconfig_exec_t;
        type passenger_tmp_t;
        type sysfs_t;
        type postfix_pickup_t;
        type puppet_var_lib_t;
        type sysctl_net_t;
        type httpd_t;
        type proc_net_t;
        class sock_file write;
        class tcp_socket listen;
        class dir { search create rmdir };
        class file { relabelfrom getattr read relabelto open execute execute_no_trans };
}

#============= httpd_t ==============
allow httpd_t passenger_tmp_t:sock_file write;

#============= passenger_t ==============
allow passenger_t ifconfig_exec_t:file { read getattr open execute execute_no_trans };
allow passenger_t locale_t:file getattr;
allow passenger_t proc_net_t:file { read getattr open };
allow passenger_t puppet_var_lib_t:dir { create rmdir };
allow passenger_t puppet_var_lib_t:file { relabelfrom relabelto };

#!!!! This avc can be allowed using the boolean 'allow_ypbind'
allow passenger_t self:tcp_socket listen;
allow passenger_t sysctl_net_t:dir search;
allow passenger_t sysfs_t:dir search;
allow passenger_t sysfs_t:file { read open };
allow passenger_t user_tmp_t:file { read getattr open };

Comment 3 Johan De Wit 2014-01-17 21:51:26 UTC
Created attachment 851816 [details]
audit.log entries used with audit2allow

Comment 4 Steve Snodgrass 2014-06-11 15:15:01 UTC
I have this same problem trying to run a generic hello world application under mod_passenger-3.0.21-11.el6.x86_64 on RHEL6.  I believe the root of the problem is that mod_passenger fails to set PassengerTempDir to a value that makes the selinux policy (3.7.19-231.el6_5.3) happy.  Adding the following line to the IfModule section of /etc/httpd/conf.d/passenger.conf fixes the problem:

PassengerTempDir /var/run/rubygem-passenger

I think this line should be added to this file in the mod_passenger RPM.

Comment 5 Ben Cotton 2020-11-05 16:53:29 UTC
This message is a reminder that EPEL 6 is nearing its end of life. Fedora will stop maintaining and issuing updates for EPEL 6 on 2020-11-30. It is our policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a 'version' of 'el6'.

Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later EPEL version.

Thank you for reporting this issue and we are sorry that we were not able to fix it before EPEL 6 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged  change the 'version' to a later Fedora version prior this bug is closed as described in the policy above.

Comment 6 Ben Cotton 2020-11-05 16:56:06 UTC
This message is a reminder that EPEL 6 is nearing its end of life. Fedora will stop maintaining and issuing updates for EPEL 6 on 2020-11-30. It is policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a 'version' of 'el6'.

Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later EPEL version.

Thank you for reporting this issue and we are sorry that we were not able to fix it before EPEL 6 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version, you are encouraged to change the 'version' to a later version prior this bug is closed as described in the policy above.

Comment 7 Ben Cotton 2020-11-30 14:57:24 UTC
EPEL el6 changed to end-of-life (EOL) status on 2020-11-30. EPEL el6 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of
EPEL please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this
bug.

Thank you for reporting this bug and we are sorry it could not be fixed.


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