From: "Justin P. Mattock" <justinmattock@gmail.com>
To: imsand@puzzle.ch
Cc: Daniel J Walsh <dwalsh@redhat.com>,
Chad Sellers <csellers@tresys.com>,
selinux@tycho.nsa.gov
Subject: Re: Context settings after ssh login
Date: Wed, 20 Oct 2010 06:46:28 -0700 [thread overview]
Message-ID: <4CBEF2B4.3050408@gmail.com> (raw)
In-Reply-To: <10617.193.5.216.100.1287564131.squirrel@mail.puzzle.ch>
On 10/20/2010 01:42 AM, imsand@puzzle.ch wrote:
>> On 10/19/2010 08:47 AM, imsand@puzzle.ch wrote:
>>>> On 10/19/2010 07:42 AM, imsand@puzzle.ch wrote:
>>>>>> On 10/07/2010 09:11 AM, Daniel J Walsh wrote:
>>>>>>
>>>>>>> -----BEGIN PGP SIGNED MESSAGE-----
>>>>>>> Hash: SHA1
>>>>>>>
>>>>>>> On 10/07/2010 10:40 AM, Chad Sellers wrote:
>>>>>>>
>>>>>>>> On 10/6/10 3:29 AM, "imsand@puzzle.ch"<imsand@puzzle.ch> wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>>>> On 10/05/2010 11:43 PM, imsand@puzzle.ch wrote:
>>>>>>>>>>
>>>>>>>>>>>> On 10/05/2010 06:38 AM, imsand@puzzle.ch wrote:
>>>>>>>>>>>>
>>>>>>>>>>>>>> On 10/04/2010 11:30 PM, imsand@puzzle.ch wrote:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> On 10/04/2010 01:03 AM, imsand@puzzle.ch wrote:
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> Hello
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> I'm working on SUSE SLES11SP1 and encounter the following
>>>>>>>>>>>>>>>>> problem.
>>>>>>>>>>>>>>>>> Setting the context of the User after ssh login doesn't
>>>>>>>>>>>>>>>>> work
>>>>>>>>>>>>>>>>> if
>>>>>>>>>>>>>>>>> the
>>>>>>>>>>>>>>>>> SELinux Username and the Linux Username aren't identical.
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> --------------
>>>>>>>>>>>>>>>>> Here is an example (SElinux User=mat_u, Linux User=mat_u):
>>>>>>>>>>>>>>>>> Oct 4 09:41:54 testsrv.example sshd[15829]: Accepted
>>>>>>>>>>>>>>>>> keyboard-interactive/pam for mat_u from 131.102.233.125
>>>>>>>>>>>>>>>>> port
>>>>>>>>>>>>>>>>> 54714
>>>>>>>>>>>>>>>>> ssh2
>>>>>>>>>>>>>>>>> Oct 4 09:41:54 testsrv.example sshd[15829]:
>>>>>>>>>>>>>>>>> pam_selinux(sshd:session):
>>>>>>>>>>>>>>>>> Open Session
>>>>>>>>>>>>>>>>> Oct 4 09:41:54 testsrv.example sshd[15829]:
>>>>>>>>>>>>>>>>> pam_selinux(sshd:session):
>>>>>>>>>>>>>>>>> Open Session
>>>>>>>>>>>>>>>>> Oct 4 09:41:54 testsrv.example sshd[15829]:
>>>>>>>>>>>>>>>>> pam_selinux(sshd:session):
>>>>>>>>>>>>>>>>> Username= mat_u SELinux User = user_u Level= (null)
>>>>>>>>>>>>>>>>> Oct 4 09:41:54 testsrv.example sshd[15829]:
>>>>>>>>>>>>>>>>> pam_selinux(sshd:session):
>>>>>>>>>>>>>>>>> set mat_u security context to user_u:user_r:user_t
>>>>>>>>>>>>>>>>> Oct 4 09:41:54 testsrv.example sshd[15829]:
>>>>>>>>>>>>>>>>> pam_selinux(sshd:session):
>>>>>>>>>>>>>>>>> set mat_u key creation context to user_u:user_r:user_t
>>>>>>>>>>>>>>>>> ---
>>>>>>>>>>>>>>>>> mat_u@testsrv.example:~> id
>>>>>>>>>>>>>>>>> uid=6575(mat_u) gid=100(users)
>>>>>>>>>>>>>>>>> groups=16(dialout),33(video),100(users)
>>>>>>>>>>>>>>>>> context=mat_u:staff_r:staff_t
>>>>>>>>>>>>>>>>> mat_u@testsrv.example:~> newrole -r sysadm_r
>>>>>>>>>>>>>>>>> mat_u@testsrv.example:~> id
>>>>>>>>>>>>>>>>> uid=6575(mat_u) gid=100(users)
>>>>>>>>>>>>>>>>> groups=16(dialout),33(video),100(users)
>>>>>>>>>>>>>>>>> context=mat_u:sysadm_r:sysadm_t
>>>>>>>>>>>>>>>>> --------------------
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> So, this is okey. The user's context after login is
>>>>>>>>>>>>>>>>> "mat_u:staff_r:staff_t"
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> But, if the Linux User is different from the SELinux User,
>>>>>>>>>>>>>>>>> the
>>>>>>>>>>>>>>>>> default
>>>>>>>>>>>>>>>>> user's will be chosen instead.
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> Here is the example (SELinux User=mat_u, Linux User=mat):
>>>>>>>>>>>>>>>>> ---------------------
>>>>>>>>>>>>>>>>> Oct 4 09:46:22 testsrv.example sshd[16185]: Accepted
>>>>>>>>>>>>>>>>> keyboard-interactive/pam for mat from 131.102.233.125 port
>>>>>>>>>>>>>>>>> 54726
>>>>>>>>>>>>>>>>> ssh2
>>>>>>>>>>>>>>>>> Oct 4 09:46:22 testsrv.example sshd[16185]:
>>>>>>>>>>>>>>>>> pam_selinux(sshd:session):
>>>>>>>>>>>>>>>>> Open Session
>>>>>>>>>>>>>>>>> Oct 4 09:46:22 testsrv.example sshd[16185]:
>>>>>>>>>>>>>>>>> pam_selinux(sshd:session):
>>>>>>>>>>>>>>>>> Open Session
>>>>>>>>>>>>>>>>> Oct 4 09:46:22 testsrv.example sshd[16185]:
>>>>>>>>>>>>>>>>> pam_selinux(sshd:session):
>>>>>>>>>>>>>>>>> Username= mat SELinux User = mat_u Level= (null)
>>>>>>>>>>>>>>>>> Oct 4 09:46:22 testsrv.example sshd[16185]:
>>>>>>>>>>>>>>>>> pam_selinux(sshd:session):
>>>>>>>>>>>>>>>>> set mat security context to mat_u:staff_r:staff_t
>>>>>>>>>>>>>>>>> Oct 4 09:46:22 testsrv.example sshd[16185]:
>>>>>>>>>>>>>>>>> pam_selinux(sshd:session):
>>>>>>>>>>>>>>>>> set mat key creation context to mat_u:staff_r:staff_t
>>>>>>>>>>>>>>>>> ---
>>>>>>>>>>>>>>>>> mat_u@testsrv.example:~> id
>>>>>>>>>>>>>>>>> uid=6575(mat) gid=100(users)
>>>>>>>>>>>>>>>>> groups=16(dialout),33(video),100(users)
>>>>>>>>>>>>>>>>> context=user_u:user_r:user_t
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> mat_u@testsrv.example:~> newrole -r sysadm_r
>>>>>>>>>>>>>>>>> user_u:sysadm_r:sysadm_t is not a valid context
>>>>>>>>>>>>>>>>> ---------------------
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> As you can see, the pam_selinux module recognizes that the
>>>>>>>>>>>>>>>>> new
>>>>>>>>>>>>>>>>> context
>>>>>>>>>>>>>>>>> should be "mat_u:staff_r:staff_t", but for some reason the
>>>>>>>>>>>>>>>>> real
>>>>>>>>>>>>>>>>> context
>>>>>>>>>>>>>>>>> is
>>>>>>>>>>>>>>>>> user_u:user_r:user_t. Changing the context with newrole
>>>>>>>>>>>>>>>>> doesn't
>>>>>>>>>>>>>>>>> work
>>>>>>>>>>>>>>>>> either...
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> The user mappings should be okey:
>>>>>>>>>>>>>>>>> ------
>>>>>>>>>>>>>>>>> semanage user -l | grep mat
>>>>>>>>>>>>>>>>> mat_u staff_r sysadm_r
>>>>>>>>>>>>>>>>> testsrv.example:~ # semanage login -l | grep mat
>>>>>>>>>>>>>>>>> mat
>>>>>>>>>>>>>>>>> -------
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> Any idea out there? Do I miss something?
>>>>>>>>>>>>>>>>> kind regards
>>>>>>>>>>>>>>>>> Matthias
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> --
>>>>>>>>>>>>>>>>> This message was distributed to subscribers of the selinux
>>>>>>>>>>>>>>>>> mailing
>>>>>>>>>>>>>>>>> list.
>>>>>>>>>>>>>>>>> If you no longer wish to subscribe, send mail to
>>>>>>>>>>>>>>>>> majordomo@tycho.nsa.gov
>>>>>>>>>>>>>>>>> with
>>>>>>>>>>>>>>>>> the words "unsubscribe selinux" without quotes as the
>>>>>>>>>>>>>>>>> message.
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> you can specify the context in
>>>>>>>>>>>>>>>> /etc/selinux/policy/contexts/users/whatroleyouused
>>>>>>>>>>>>>>>> (under sshd) I normally set user_r:user_t:s0
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Justin P. Mattock
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> --
>>>>>>>>>>>>>>>> This message was distributed to subscribers of the selinux
>>>>>>>>>>>>>>>> mailing
>>>>>>>>>>>>>>>> list.
>>>>>>>>>>>>>>>> If you no longer wish to subscribe, send mail to
>>>>>>>>>>>>>>>> majordomo@tycho.nsa.gov
>>>>>>>>>>>>>>>> with
>>>>>>>>>>>>>>>> the words "unsubscribe selinux" without quotes as the
>>>>>>>>>>>>>>>> message.
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> The file looks like:
>>>>>>>>>>>>>>> cat /etc/selinux/refpolicy/contexts/users/mat_u
>>>>>>>>>>>>>>> system_r:local_login_t staff_r:staff_t sysadm_r:sysadm_t
>>>>>>>>>>>>>>> system_r:remote_login_t staff_r:staff_t
>>>>>>>>>>>>>>> system_r:sshd_t staff_r:staff_t sysadm_r:sysadm_t
>>>>>>>>>>>>>>> system_r:crond_t staff_r:cronjob_t
>>>>>>>>>>>>>>> system_r:xdm_t staff_r:staff_t
>>>>>>>>>>>>>>> staff_r:staff_su_t staff_r:staff_t
>>>>>>>>>>>>>>> staff_r:staff_sudo_t staff_r:staff_t
>>>>>>>>>>>>>>> sysadm_r:sysadm_su_t sysadm_r:sysadm_t
>>>>>>>>>>>>>>> sysadm_r:sysadm_sudo_t sysadm_r:sysadm_t
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> So, theoretical this should be okey, isn't it?
>>>>>>>>>>>>>>> And as you can see in the log from above (set mat key
>>>>>>>>>>>>>>> creation
>>>>>>>>>>>>>>> context
>>>>>>>>>>>>>>> to
>>>>>>>>>>>>>>> mat_u:staff_r:staff_t) it "tries" to switch to staff but for
>>>>>>>>>>>>>>> some
>>>>>>>>>>>>>>> reason
>>>>>>>>>>>>>>> it doesn't work..
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>> if your sshd'ing and the context is staff_r:staff_t then it's
>>>>>>>>>>>>>> correct,
>>>>>>>>>>>>>> I
>>>>>>>>>>>>>> usually change this to user_r:user_t just cause I'm paranoid.
>>>>>>>>>>>>>> Also there is some options that you can set in /etc/pam.d to
>>>>>>>>>>>>>> do
>>>>>>>>>>>>>> other
>>>>>>>>>>>>>> checks etc..
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Justin P. Mattock
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>> no it's not and that't the problem:)
>>>>>>>>>>>>> If I sshd'ing with mat_u it's always "user_r:user_t" even
>>>>>>>>>>>>> "staff_r:staff_t" is specified (see above). But it's correct
>>>>>>>>>>>>> if
>>>>>>>>>>>>> the
>>>>>>>>>>>>> selinux and linux users are named equaly (mat in the example).
>>>>>>>>>>>>> It seems that something with the context settings and
>>>>>>>>>>>>> usermapping
>>>>>>>>>>>>> isn't
>>>>>>>>>>>>> correct. Do you see the problem?
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> Somewhere in the policy it is set to default to user_r for
>>>>>>>>>>>> sshd,
>>>>>>>>>>>> I
>>>>>>>>>>>> dont
>>>>>>>>>>>> think there is a boolean(but could be wrong)for that feature.
>>>>>>>>>>>> maybe
>>>>>>>>>>>> it's
>>>>>>>>>>>> reading the default_contexts file which is set to use
>>>>>>>>>>>> user_r:user_t
>>>>>>>>>>>> instead of reading mat_u for sshd(staff_r:staff_t)
>>>>>>>>>>>>
>>>>>>>>>>>> Justin P. Mattock
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>> Unfortunately I can't see a rule doing this. The curious thing
>>>>>>>>>>> is,
>>>>>>>>>>> that
>>>>>>>>>>> it
>>>>>>>>>>> works if the selinux user and the linux user are equivalent
>>>>>>>>>>> (both
>>>>>>>>>>> mat_u).
>>>>>>>>>>> But it does NOT work if it is mat (linux user) and mapped to
>>>>>>>>>>> mat_u
>>>>>>>>>>> (selinux user).
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> hmm.. something seems configured wrong, what OS are you using? do
>>>>>>>>>> you
>>>>>>>>>> have semanage login/user -l set up correctly?
>>>>>>>>>>
>>>>>>>>>> over here I build the policy from git, normally edit policy/users
>>>>>>>>>> (add)
>>>>>>>>>> gen_user(name,system_u, sysadm_r staff_r user_r, s0, s0 -
>>>>>>>>>> mls_systemhigh, mcs_allcats)
>>>>>>>>>>
>>>>>>>>>> then after the policy is built and installed/loaded I do
>>>>>>>>>> semanage login -a -s name name (create name in contexts/users)
>>>>>>>>>> (or skip the above and just use semanage -a -s user_u name)
>>>>>>>>>>
>>>>>>>>>> seems sshd works with the given context I specify(user_r) then if
>>>>>>>>>> I
>>>>>>>>>> want
>>>>>>>>>> to add more options I adjust /etc/pam.d/*
>>>>>>>>>>
>>>>>>>>>> Justin P. Mattock
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>> Thanks for your reply.
>>>>>>>>> I'm using SLES 11 SP1. It wouldn't be the first bug regarding
>>>>>>>>> SELinux
>>>>>>>>> on
>>>>>>>>> this distro... ;)
>>>>>>>>> Here is what I've done so far.
>>>>>>>>> - Downloaded the latest reference policy from tresys
>>>>>>>>> - Compiled and installed it on my sles 11.1
>>>>>>>>> - Add selinux user mat_u: "semanage user -R "staff_r system_r" -P
>>>>>>>>> user
>>>>>>>>> -a
>>>>>>>>> mat_u"
>>>>>>>>> - Add linux user mat: "useradd mat"
>>>>>>>>> - Set password for mat: "passwd mat"
>>>>>>>>> - User mapping: "semanage login -s mat_u -a mat"
>>>>>>>>> - add security context for mat_u by copying staff_u's context
>>>>>>>>> "cp /etc/selinux/refpolicy/contexts/user/staff_u
>>>>>>>>> /etc/selinux/refpolicy/contexts/user/mat_u"
>>>>>>>>> - set boolean for sysadm ssh login to true: "setsebool -P
>>>>>>>>> ssh_sysadm_login
>>>>>>>>> on"
>>>>>>>>>
>>>>>>>>> Do you know good debug options for tracing where it stucks?
>>>>>>>>>
>>>>>>>>>
>>>>>>>> When debugging login-type programs figuring out the context to
>>>>>>>> transition
>>>>>>>> to, there are a couple of simple useful utilities in
>>>>>>>> libselinux/utils.
>>>>>>>> These
>>>>>>>> are getconlist and getdefaultcon. Most distros won't install these
>>>>>>>> (as
>>>>>>>> they're just debugging tools), but you can build them yourself out
>>>>>>>> of
>>>>>>>> the
>>>>>>>> tree.
>>>>>>>>
>>>>>>>> getconlist will print out the contexts returned by
>>>>>>>> get_ordered_context_list(), which are all the reachable contexts.
>>>>>>>> This
>>>>>>>> could
>>>>>>>> tell you if the problem is that the context you're trying to
>>>>>>>> transition
>>>>>>>> to
>>>>>>>> is for some reason unreachable.
>>>>>>>>
>>>>>>>> getdefaultcon can tell you (in verbose mode) the default seuser and
>>>>>>>> level
>>>>>>>> returned by getseuserbyname() and the default context returned by
>>>>>>>> get_default_context_with_rolelevel()/get_default_context_with_level().
>>>>>>>> If
>>>>>>>> the seuser is wrong, then you know something's going wrong in
>>>>>>>> getseuserbyname().
>>>>>>>>
>>>>>>>> I hope that helps.
>>>>>>>>
>>>>>>>> Thanks,
>>>>>>>> Chad Sellers
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> This message was distributed to subscribers of the selinux mailing
>>>>>>>> list.
>>>>>>>> If you no longer wish to subscribe, send mail to
>>>>>>>> majordomo@tycho.nsa.gov with
>>>>>>>> the words "unsubscribe selinux" without quotes as the message.
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>> We ship them in fedora as selinuxconlist and selinuxdefcon
>>>>>>> -----BEGIN PGP SIGNATURE-----
>>>>>>> Version: GnuPG v1.4.10 (GNU/Linux)
>>>>>>> Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/
>>>>>>>
>>>>>>> iEYEARECAAYFAkyt8UkACgkQrlYvE4MpobPw+wCfa8sf3A8+xhnMmdz2z3/vuJOM
>>>>>>> TYsAn1s18NmE9caf5MpCt312RO2Wh/BI
>>>>>>> =N+E/
>>>>>>> -----END PGP SIGNATURE-----
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> o.k. I just loaded up OpenSUSE11.4, and loaded the policy(this is
>>>>>> from
>>>>>> git keep in mind, not what suse offers).
>>>>>> after getting everything setup I was able to ssh into the machine
>>>>>> with
>>>>>> my iphone, and issue id -Z.. the context I set is user_r:user_t which
>>>>>> the iphone showed(name:user_r:staff_t:s0) so everything is good with
>>>>>> this version.(not sure with 11.1, but I know 11.2 works fine, as well
>>>>>> as
>>>>>> 11.4).
>>>>>>
>>>>>> Justin P. Mattock
>>>>>>
>>>>>> --
>>>>>> This message was distributed to subscribers of the selinux mailing
>>>>>> list.
>>>>>> If you no longer wish to subscribe, send mail to
>>>>>> majordomo@tycho.nsa.gov
>>>>>> with
>>>>>> the words "unsubscribe selinux" without quotes as the message.
>>>>>>
>>>>>>
>>>>> Thank you for your answers.
>>>>> I've reinstalled the sles11.1 with the newest opensuse selinux
>>>>> libraries
>>>>> (http://download.opensuse.org/repositories/security:/SELinux/openSUSE_Factory/x86_64/),
>>>>> but it still struggles with the ssh login. Local login is working now!
>>>>> There must be a problem with pam_selinux. Here's the output of the
>>>>> debug
>>>>> log:
>>>>> Oct 19 16:40:50 testmachine.local sshd[7550]:
>>>>> pam_selinux(sshd:session):
>>>>> Open Session
>>>>> Oct 19 16:40:50 testmachine.local sshd[7550]:
>>>>> pam_selinux(sshd:session):
>>>>> Username= mat SELinux User = mat_u Level= (null)
>>>>> Oct 19 16:40:50 testmachine.local sshd[7550]:
>>>>> pam_selinux(sshd:session):
>>>>> set mat security context to mat_u:staff_r:insmod_t
>>>>> Oct 19 16:40:50 testmachine.local sshd[7550]:
>>>>> pam_selinux(sshd:session):
>>>>> set mat key creation context to mat_u:staff_r:insmod_t
>>>>> Oct 19 16:40:50 testmachine.local sshd[7557]: pam_unix2(sshd:setcred):
>>>>> pam_sm_setcred() called
>>>>> Oct 19 16:40:50 testmachine.local sshd[7557]: pam_unix2(sshd:setcred):
>>>>> username=[mat]
>>>>> Oct 19 16:40:50 testmachine.local sshd[7557]: pam_unix2(sshd:setcred):
>>>>> pam_sm_setcred: PAM_SUCCESS
>>>>> Oct 19 16:40:50 testmachine.local sshd[7557]: fatal:
>>>>> ssh_selinux_getctxbyname: Failed to get default SELinux security
>>>>> context
>>>>> for mat (in enforcing mode)
>>>>> Oct 19 16:40:50 testmachine.local sshd[7550]:
>>>>> pam_selinux(sshd:session):
>>>>> Close Session
>>>>>
>>>>> @justin: which policy did you installed from git? url? I tried
>>>>> refpolicy
>>>>> from tresys.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>> from what I remember insmod_t is a context I always received, due to
>>>> unlabeled filesystem
>>>> i.e. I also use LFS, and will tar ball the whole system, and copy it
>>>> over to the new machine,
>>>> then receive the insmod_t until I relabel, then all is good, but in
>>>> your
>>>> case it shouldn't be going to that.
>>>>
>>>>
>>>> as for the policy(sounds like the same one)..:
>>>>
>>>> git clone http://oss.tresys.com/git/refpolicy.git
>>>>
>>>> in regards to sles11 im wondering if it's close to opensuse 11.1, if so
>>>> I can
>>>> load that one up on my machine to see whats happening(right now I'm
>>>> kind
>>>> of floating
>>>> from one distro to the next(I have the "try that out distro itch"..))
>>>>
>>>> Justin P. Mattock
>>>>
>>>>
>>>
>>> I don't think that opensuse 11.1 and sles 11.1 are close enough!?
>>> I found out that if the selinux user and the linux user are equal (both
>>> mat_u), the ssh login works as well.
>>>
>>> indeed insmod was gone after "make relabel", but now I can't start the
>>> system in enforcing mode anymore, because a couple of denies =>
>>> most of them are related to dbus and rpc-statd:
>>> ----
>>> avc: denied { search } for pid=2320 comm="dbus-daemon" nam
>>> e="dbus" dev=dm-7 ino=40172 scontext=system_u:system_r:sysadm_dbusd_t
>>> tcontext=system_u:object_r:system_dbusd_var_run_t tclass=dir
>>> ----
>>> ----
>>> avc: denied { read } for pid=3127 comm="rpc.statd" path="p
>>> ipe:[9740]" dev=pipefs ino=9740 scontext=system_u:system_r:mount_t
>>> tcontext=system_u:system_r:mount_t tclass=fifo_file
>>> ----
>>> are you familiar with that? are there some booleans to set or do I have
>>> to
>>> adjust the policy?
>>>
>>>
>>>
>>>
>>
>
>
>> from what I remember opensuse 11.2 had issues starting due too
>> /etc/selinux/config having the wrong permissions(should be -rw-r--r--.)
> the permissions were already correct on my system.
>
cool... opensuse 11.2 was wrong(should be fixed now), causing SELinux to
always look for targeted
>> has issues with /etc/initscript causing SELinux to not transition(thread
>> here)..:
>> http://oss.tresys.com/pipermail/refpolicy/2010-February/002012.html
>>
>> for some reason sysvinit craps out with:
>> if (access(INITSCRIPT, R_OK) == 0&& runlevel != 'S') {
>>
>> I played around with sysvinit, but my code skills only took me so far:
>> http://www.spinics.net/lists/selinux/msg08983.html
>>
>> two solutions to this is too mv /etc/initscript{,-bak} or
>> setsebool -P init_upstart on
>> this way you transistion properly and you wont receive a dbus error(if
>> this is whats happening with sles11.1)
> You're right. after setting init_upstart=1 I don't receive a dbus error
> anymore.
>
the biggest issue is sles11.1 doesn't even use upstart.. this is caused by
/etc/initscript (just having that file present, causes things to go out
of whack)
>>
>> thirdly login context gets the wrong role.. simple fix is on this
>> report:
>> https://bugzilla.novell.com/show_bug.cgi?id=582366
>>
>> here are the bug reports that got fixed so opensuse 11.2 is able to get
>> up and running in full enforcement mode.
>>
>> https://bugzilla.novell.com/show_bug.cgi?id=581505
>> https://bugzilla.novell.com/show_bug.cgi?id=582399
>> https://bugzilla.novell.com/show_bug.cgi?id=582404
>>
>> hopefully these are similar to what you're hitting...this way you can
>> get up and running properly...
>>
> I was gone through all reports but so far I have an other problem
> preventing me from logging in (in enforcing mode).
> "Permissions on the password database may be too restrictive." => I'm sure
> that the password is correct.
>
cool... you might need to make enableaudit or semodule -DB to show more
avc's being denied
> This could be related to pam stuff (like described in aboves bugs), but
> first of all I would like to get rid of some other problems:
> type=AVC msg=audit(1287563356.696:342): avc: denied { module_request }
> for pid=3839 comm="sshd" scontext=system_u:system_r:sshd_t
> tcontext=system_u:system_r:kernel_t tclass=system
> type=AVC msg=audit(1287563356.848:343): avc: denied { search } for
> pid=3839 comm="sshd" name="root" dev=dm-2 ino=7828
> scontext=system_u:system_r:sshd_t tcontext=system_u:object_r:default_t
> tclass=dir
> type=AVC msg=audit(1287563360.848:344): avc: denied { module_request }
> for pid=3839 comm="sshd" scontext=system_u:system_r:sshd_t
> tcontext=system_u:system_r:kernel_t tclass=system
> type=AVC msg=audit(1287563360.904:345): avc: denied { search } for
> pid=3848 comm="sshd" name="root" dev=dm-2 ino=7828
> scontext=system_u:system_r:sshd_t tcontext=system_u:object_r:default_t
> tclass=dir
> type=AVC msg=audit(1287563361.056:346): avc: denied { search } for
> pid=3849 comm="xauth" name="root" dev=dm-2 ino=7828
> scontext=root:staff_r:xauth_t tcontext=system_u:object_r:default_t
> tclass=dir
> type=AVC msg=audit(1287563361.056:347): avc: denied { write } for
> pid=3849 comm="xauth" name="root" dev=dm-2 ino=7828
> scontext=root:staff_r:xauth_t tcontext=system_u:object_r:default_t
> tclass=dir
>
> Do you see what the problem could be?
>
copy/pasting and using audit2allow -i file gets me nothing(format must
be messd up or something), anyways dan is saying something about root in
there name="root" so looking into what he had suggested is what probably
needs to be done..
over here ls -lZ /root shows
system_u:object_r:default_t:s0
>
> And there is another issue which prevents syslogd from starting:
>
> Oct 20 09:21:20 testmachine.local syslog-ng[3103]: Error opening file for
> writing; filename='/dev/tty10', error='Permission denied (13)'
> Oct 20 09:21:20 testmachine.local syslog-ng[3103]: Error opening file for
> writing; filename='/dev/xconsole', error='Permission denied (13)'
>
> Any ideas?
>
thats a new one to me.. my guess is the file labels are wrong,
i.e. ubuntu had an issue a few yrs ago, to where /var/log/*
need to have restorecond -R /var done every-time at startup in order for
the system to load into enforcement mode(with selinux-policy-default)
but is fixed now.
Justin P. Mattock
--
This message was distributed to subscribers of the selinux mailing list.
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next prev parent reply other threads:[~2010-10-20 13:46 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-04 8:03 Context settings after ssh login imsand
2010-10-04 17:13 ` Justin P. Mattock
2010-10-05 6:30 ` imsand
2010-10-05 13:29 ` Justin P. Mattock
2010-10-05 13:38 ` imsand
2010-10-05 14:29 ` Justin P. Mattock
2010-10-06 6:43 ` imsand
2010-10-06 7:06 ` Justin P. Mattock
2010-10-06 7:29 ` imsand
2010-10-06 13:50 ` Justin P. Mattock
2010-10-06 13:50 ` [refpolicy] " Justin P. Mattock
2010-10-07 14:40 ` Chad Sellers
2010-10-07 16:11 ` Daniel J Walsh
2010-10-07 17:24 ` Justin P. Mattock
2010-10-19 14:42 ` imsand
2010-10-19 14:55 ` Justin P. Mattock
2010-10-19 15:47 ` imsand
2010-10-19 16:38 ` Justin P. Mattock
2010-10-20 8:42 ` imsand
2010-10-20 12:27 ` Daniel J Walsh
2010-10-20 13:46 ` Justin P. Mattock [this message]
2010-10-20 14:25 ` imsand
2010-10-20 14:52 ` Justin P. Mattock
2010-10-21 12:09 ` imsand
2010-10-21 13:33 ` Justin P. Mattock
2010-10-24 23:43 ` Russell Coker
2010-10-23 6:28 ` Justin P. Mattock
2010-10-23 20:05 ` Justin P. Mattock
2010-10-25 7:09 ` imsand
2010-10-25 7:57 ` Justin P. Mattock
2010-10-25 8:22 ` Justin P. Mattock
2010-10-26 8:27 ` imsand
2010-10-26 14:26 ` Justin P. Mattock
2010-10-28 13:23 ` Justin P. Mattock
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