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+++ This bug was initially created as a clone of Bug #1071578 +++
Description of problem:
FreeIPA allows the user to create a set of SELinux user maps. These are not cached properly, and as a result for a user with a domain joined system such as a laptop, when the system is started without access to the domain network, your SELinux permissions are reduced causing a lack in system functionality until you rejoin the domain network and login / out.
Version-Release number of selected component (if applicable):
1.11.4-1
How reproducible:
Always
Steps to Reproduce:
1. Join a laptop to a freeipa domain.
2. In freeipa, create a default selinux user map with a low label, ie user_u:user_r:user_t:s0. Then for the laptop system create a hbac rule for the user, and the laptop. Then create an selinux map for that hbac rule such as staff_u:staff_r:staff_t:s0:c0.c1023. Ensure that when you login to the laptop on the network, you get the staff role.
3. Disconnect all network devices on the laptop, reboot and login.
Actual results:
id -Z is user_u:user_r:user_t:s0
Expected results:
Since a login has already occured the label of staff_u:staff_r:staff_t:s0:c0.c1023 should be cached, and given to the user.
Additional info:
Given the nature of this bug, where a user may end up mislabelled, either in a higher or lower context depending on the setup of the freeipa selinux defaults, this may pose a security risk.
--- Additional comment from Jakub Hrozek on 2014-03-03 11:29:14 EST ---
Thank you for the bug report. I reproduced your problem and I'm working on a fix.
Verified.
now sssd cache persistent after reboot.
[root@rhel70-client ~]# rpm -q sssd ipa-client
sssd-1.11.2-60.el7.x86_64
ipa-client-3.3.3-25.el7.x86_64
[root@rhel70-client ~]#
Steps used for verification:
============================
On IPA Master
=============
(1) Added selinux context "staff_u" for user "tuser1" on client .
[root@master ~]# ipa hbacrule-show testrule1
Rule name: testrule1
Enabled: TRUE
Users: tuser1
Hosts: rhel70-client.testrelm.test
[root@master ~]# ipa selinuxusermap-show selinuxrule1
Rule name: selinuxrule1
SELinux User: staff_u:s0-s0:c0.c1023
HBAC Rule: testrule1
Enabled: TRUE
[root@master ~]#
On IPA Client
=============
(2)selinuxusermap context "staff_u" is shown for user "tuser1" on client machine
[root@rhel70-client ~]# ssh -l tuser1 rhel70-client.testrelm.test id -Z
tuser1.test's password:
staff_u:staff_r:staff_t:s0-s0:c0.c1023
Could not chdir to home directory /home/tuser1: No such file or directory
[root@rhel70-client ~]#
(3)Rebooted client machine
[root@rhel70-client ~]# reboot
Connection to 10.65.207.134 closed by remote host.
Connection to 10.65.207.134 closed.
[ksiddiqu@ksiddiqu ~]$
[ksiddiqu@ksiddiqu ~]$ ssh root.207.134
reverse mapping checking getaddrinfo for dhcp207-134.lab.eng.pnq.redhat.com [10.65.207.134] failed - POSSIBLE BREAK-IN ATTEMPT!
root.207.134's password:
Last login: Fri Mar 21 16:41:42 2014 from 10.65.193.58
[root@rhel70-client ~]#
(4)selinuxusermap context "staff_u" is shown for user "tuser1" on client machine even after reboot.
[root@rhel70-client ~]# ssh -l tuser1 rhel70-client.testrelm.test id -Z
tuser1.test's password:
staff_u:staff_r:staff_t:s0-s0:c0.c1023
Could not chdir to home directory /home/tuser1: No such file or directory
[root@rhel70-client ~]#
This request was resolved in Red Hat Enterprise Linux 7.0.
Contact your manager or support representative in case you have further questions about the request.