Bug 1192314
| Summary: | With empty ipaselinuxusermapdefault security context on client is staff_u | |||
|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Steeve Goveas <sgoveas> | |
| Component: | sssd | Assignee: | Jakub Hrozek <jhrozek> | |
| Status: | CLOSED ERRATA | QA Contact: | Kaushik Banerjee <kbanerje> | |
| Severity: | high | Docs Contact: | ||
| Priority: | high | |||
| Version: | 7.2 | CC: | drieden, grajaiya, jgalipea, jherrman, jhrozek, lmiksik, lslebodn, mkosek, mzidek, nsoman, pbrezina, preichl, rcritten, sgoveas | |
| Target Milestone: | rc | Keywords: | Regression, ZStream | |
| Target Release: | --- | |||
| Hardware: | Unspecified | |||
| OS: | Unspecified | |||
| Whiteboard: | ||||
| Fixed In Version: | sssd-1.12.2-58.el7.5 | Doc Type: | Bug Fix | |
| Doc Text: |
When the SELinux user content on an IdM server was set to an empty string, the SSSD SELinux evaluation utility previously returned an error. With this update, when an empty string is set, the SSSD correctly uses the default SELinux context value stored in the policy on the client, which prevents the described error from occurring.
|
Story Points: | --- | |
| Clone Of: | ||||
| : | 1194302 1198480 1199143 (view as bug list) | Environment: | ||
| Last Closed: | 2015-11-19 11:35:42 UTC | Type: | Bug | |
| Regression: | --- | Mount Type: | --- | |
| Documentation: | --- | CRM: | ||
| Verified Versions: | Category: | --- | ||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | ||
| Cloudforms Team: | --- | Target Upstream Version: | ||
| Embargoed: | ||||
| Bug Depends On: | ||||
| Bug Blocks: | 1194302, 1198480, 1199143 | |||
I assume that in that case, the default comes from SSSD. Reassigning. Upstream ticket: https://fedorahosted.org/sssd/ticket/2587 The problem here is that SSSD does not delete the user's old selinux context. Jakub already wrote a patch and it is on review. As a workaround, you can use semanage tools to delete the old context: semanage login --delete username Then the right default will be picked up. * master: 01f78f755fde63997ccfded71fb8395569b11430 * sssd-1-12: 90efb3c2a48146d7b6cc81fe8422e9024144402a Verified in version
[root@vm-idm-043 ~]# rpm -q sssd
sssd-1.13.0-11.el7.x86_64
Master
[root@vm-idm-014 ~]# ipa config-show | grep -i selinux
SELinux user map order: guest_u:s0$xguest_u:s0$user_u:s0$staff_u:s0-s0:c0.c1023$unconfined_u:s0-s0:c0.c1023
Default SELinux user: unconfined_u:s0-s0:c0.c1023
[root@vm-idm-014 ~]# ipa config-mod --ipaselinuxusermapdefault=
Maximum username length: 32
Home directory base: /home
Default shell: /bin/sh
Default users group: ipausers
Default e-mail domain: stvidrange.test
Search time limit: 2
Search size limit: 100
User search fields: uid,givenname,sn,telephonenumber,ou,title
Group search fields: cn,description
Enable migration mode: FALSE
Certificate Subject base: O=STVIDRANGE.TEST
Password Expiration Notification (days): 4
Password plugin features: AllowNThash
SELinux user map order: guest_u:s0$xguest_u:s0$user_u:s0$staff_u:s0-s0:c0.c1023$unconfined_u:s0-s0:c0.c1023
Default PAC types: nfs:NONE, MS-PAC
[root@vm-idm-014 ~]# ipa config-show | grep -i selinux
SELinux user map order: guest_u:s0$xguest_u:s0$user_u:s0$staff_u:s0-s0:c0.c1023$unconfined_u:s0-s0:c0.c1023
[root@vm-idm-014 ~]# kdestroy -A
[root@vm-idm-014 ~]# echo Secret123 | kinit aduser1
Password for aduser1:
[root@vm-idm-014 ~]# ssh -l aduser1 `hostname` id -Z
Could not chdir to home directory /home/adtest.qe/aduser1: No such file or directory
unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
[root@vm-idm-014 ~]# service sssd stop ; rm -f /var/lib/sss/{mc,db}/* ; service sssd start
Redirecting to /bin/systemctl stop sssd.service
Redirecting to /bin/systemctl start sssd.service
Client
[root@vm-idm-043 ~]# kdestroy -A
[root@vm-idm-043 ~]# echo Secret123 | kinit aduser1
Password for aduser1:
[root@vm-idm-043 ~]# service sssd stop ; rm -f /var/lib/sss/{mc,db}/* ; service sssd start
Redirecting to /bin/systemctl stop sssd.service
Redirecting to /bin/systemctl start sssd.service
[root@vm-idm-043 ~]# ssh -l aduser1 `hostname` id -Z
unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
[root@vm-idm-043 ~]# rpm -q sssd
sssd-1.13.0-11.el7.x86_64
[root@vm-idm-043 ~]# service sssd stop ; rm -f /var/lib/sss/{mc,db}/* ; service sssd start
Redirecting to /bin/systemctl stop sssd.service
Redirecting to /bin/systemctl start sssd.service
[root@vm-idm-043 ~]# ssh -l aduser1 `hostname` id -Z
unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHSA-2015-2355.html |
Description of problem: Default security context for users on client becomes staff_u:staff_r:staff_t:s0-s0:c0.c1023 when ipaselinuxusermapdefault is not set Version-Release number of selected component (if applicable): ipa-server-4.1.0-18.el7.x86_64 How reproducible: always Steps to Reproduce: 1. Setup trust 2. Remove default selinux user 3. check security contest of user Actual results: On IPA Master [root@bumblebee ~]# ipa config-mod --ipaselinuxusermapdefault= [root@bumblebee ~]# ipa config-show Maximum username length: 32 Home directory base: /home Default shell: /bin/sh Default users group: ipausers Default e-mail domain: slnx2k8r2.test Search time limit: 2 Search size limit: 100 User search fields: uid,givenname,sn,telephonenumber,ou,title Group search fields: cn,description Enable migration mode: FALSE Certificate Subject base: O=SLNX2K8R2.TEST Password Expiration Notification (days): 4 Password plugin features: AllowNThash SELinux user map order: guest_u:s0$xguest_u:s0$user_u:s0$staff_u:s0-s0:c0.c1023$unconfined_u:s0-s0:c0.c1023 Default PAC types: nfs:NONE, MS-PAC [root@bumblebee ~]# kdestroy -A [root@bumblebee ~]# echo Secret123| kinit au102130134 Password for au102130134: [root@bumblebee ~]# ssh -l au102130134 `hostname` id -Z unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 On Client [root@vm-idm-033 ~]# service sssd stop; rm -rf /var/lib/sssd/{db,mc}/*; service sssd start Redirecting to /bin/systemctl stop sssd.service Redirecting to /bin/systemctl start sssd.service [root@vm-idm-033 ~]# kdestroy -A [root@vm-idm-033 ~]# echo Secret123| kinit au102130134 Password for au102130134: [root@vm-idm-033 ~]# ssh -l au102130134 `hostname` id -Z staff_u:staff_r:staff_t:s0-s0:c0.c1023 Expected results: [root@vm-idm-033 ~]# ssh -l au102130134 `hostname` id -Z unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023