On Feb 3, 2011, at 1:39 PM, Troy Dawson wrote:

> Don Krause wrote:
>> Ok, this is definitely a bug. Well 2 actually.
>> But It doesn't appear in the publicly accessible bugzilla at RH.
>> Package ypbind actually depends on policycoreutils-python.
> 
> This is a problem for both SL and RedHat.  I just checked the dependencies.
> 
>> A fresh install of SL6 Beta1, using "Software Development Workstation", and selecting NIS under "Use Network Login", fails
>> to install policycoreutils-python, which contains "sesetbool". "sesetbool" is called by /etc/init.d/ypbind to allow ypbind access.
>> Installing as "Basic Server" at least includes policycoreutils-python.
>> Unfortunately, bug number 2, is that "sesetbool allow_ypbind=1" doesn't work, since the default selinux policy doesn't have
>> "allow_ypbind"
> 
> I'm trying to test this on a real RHEL6 system.
> Aside from ypbind still not working, how can we tell "sesetbool allow_ypbind=1" doesn't work?
> 
> Troy
> 

On both test boxes I tried, one installed as "Software Development" and one installed as "Basic Server",
I just tried to start ypbind via "service ypbind start". It would actually start ypbind, but it wouldn't connect to
the ypmaster.

In /var/log/audit/audit.log I'd get:

type=USER_AVC msg=audit(1296764305.009:32965): user pid=2503 uid=81 auid=4294967295 ses=4294967295 subj=system_u:system_r:system_dbusd_t:s0-s0:c0.c1023 msg='avc:  denied  { send_msg } for msgtype=method_call interface
=org.freedesktop.NetworkManager member=state dest=org.freedesktop.NetworkManager spid=3718 tpid=3449 scontext=unconfined_u:system_r:ypbind_t:s0 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=dbu
s : exe="/bin/dbus-daemon" sauid=81 hostname=? addr=? terminal=?'

Then I'd run "sesetbool allow_ypbind=1" as it's found in /etc/init.d/ypbind, and attempt to restart ypbind. I got the same denial in audit.log

I ran the denial through audit2allow, which gave me:

module ypbind 1.0;

require {
	type unconfined_t;
	type ypbind_t;
	class dbus send_msg;
}

#============= ypbind_t ==============
allow ypbind_t unconfined_t:dbus send_msg;

Compile that to a module and install, then ypbind runs and connects as expected.

As Stephan recommend, I did a "getsebool -a | grep yp" which returned "allow_ypbind --> on", (this is AFTER I did "sesetbool allow_ypbind=1") but ypbind still wouldn't bind to the master.

On a completely fresh installation, "getsebool -a | grep yp" returns "allow_ypbind --> off".

Thanks for looking!

--
Don Krause                                                                   
Head Systems Geek, 
Waver of Deceased Chickens.
Optivus Proton Therapy, Inc.
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