Bug 1147787
| Summary: | zebra won't start when sssd is used due to selinux policy | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Kyle Brantley <kyle> | ||||
| Component: | selinux-policy | Assignee: | Miroslav Grepl <mgrepl> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Milos Malik <mmalik> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 7.0 | CC: | mmalik | ||||
| Target Milestone: | rc | ||||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | selinux-policy-3.13.1-3.el7 | Doc Type: | Bug Fix | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2015-03-05 10:41:36 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: | |||||||
| Attachments: |
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Created attachment 942911 [details]
ausearch data for denials
Thanks for your report, the same problem is present on RHEL-6.6 (BZ#1148572). commit 38c83b21621ea0c0a83c297ddd6f5df1a9cac2cd
Author: Miroslav Grepl <mgrepl>
Date: Thu Oct 2 11:12:27 2014 +0200
ALlow zebra for user/group look-ups.
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/RHBA-2015-0458.html |
Description of problem: zebra attempts to look up the quaggavt group (and other users/groups) upon starting. However, if sssd is used to look up group information, this fails due to selinux policy prohibiting zebra from connecting to the sssd socket. Version-Release number of selected component (if applicable): selinux-policy-3.12.1-153.el7_0.11.noarch quagga-0.99.22.4-4.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1. Install both quagga and sssd 2. Configure the system to leverage sssd for user/group lookups 3. `systemctl start zebra` Actual results: * syslog: Sep 30 03:29:39 el7 systemd[1]: Starting GNU Zebra routing manager... Sep 30 03:29:39 el7 zebra[12271]: privs_init: could not lookup vty group quaggavt Sep 30 03:29:39 el7 systemd[1]: zebra.service: control process exited, code=exited status=1 Sep 30 03:29:39 el7 systemd[1]: Failed to start GNU Zebra routing manager. Sep 30 03:29:39 el7 systemd[1]: Unit zebra.service entered failed state. * audit.log: type=AVC msg=audit(1412048559.737:1753): avc: denied { search } for pid=21592 comm="zebra" name="sss" dev="dm-0" ino=4549 scontext=system_u:system_r:zebra_t:s0 tcontext=system_u:object_r:sssd_var_lib_t:s0 tclass=dir type=AVC msg=audit(1412048781.198:1762): avc: denied { search } for pid=22029 comm="zebra" name="mc" dev="dm-0" ino=4551 scontext=system_u:system_r:zebra_t:s0 tcontext=system_u:object_r:sssd_public_t:s0 tclass=dir type=AVC msg=audit(1412048781.198:1762): avc: denied { read } for pid=22029 comm="zebra" name="group" dev="dm-0" ino=13411 scontext=system_u:system_r:zebra_t:s0 tcontext=system_u:object_r:sssd_public_t:s0 tclass=file type=AVC msg=audit(1412048781.198:1762): avc: denied { open } for pid=22029 comm="zebra" path="/var/lib/sss/mc/group" dev="dm-0" ino=13411 scontext=system_u:system_r:zebra_t:s0 tcontext=system_u:object_r:sssd_public_t:s0 tclass=file type=AVC msg=audit(1412048781.199:1763): avc: denied { getattr } for pid=22029 comm="zebra" path="/var/lib/sss/mc/group" dev="dm-0" ino=13411 scontext=system_u:system_r:zebra_t:s0 tcontext=system_u:object_r:sssd_public_t:s0 tclass=file type=AVC msg=audit(1412048781.200:1764): avc: denied { write } for pid=22029 comm="zebra" name="nss" dev="dm-0" ino=13370 scontext=system_u:system_r:zebra_t:s0 tcontext=system_u:object_r:sssd_var_lib_t:s0 tclass=sock_file type=AVC msg=audit(1412048781.200:1764): avc: denied { connectto } for pid=22029 comm="zebra" path="/var/lib/sss/pipes/nss" scontext=system_u:system_r:zebra_t:s0 tcontext=system_u:system_r:sssd_t:s0 tclass=unix_stream_socket type=AVC msg=audit(1412049086.717:1771): avc: denied { search } for pid=22072 comm="zebra" name="sss" dev="dm-0" ino=4549 scontext=system_u:system_r:zebra_t:s0 tcontext=system_u:object_r:sssd_var_lib_t:s0 tclass=dir type=AVC msg=audit(1412049086.718:1772): avc: denied { search } for pid=22072 comm="zebra" name="sss" dev="dm-0" ino=4549 scontext=system_u:system_r:zebra_t:s0 tcontext=system_u:object_r:sssd_var_lib_t:s0 tclass=dir type=AVC msg=audit(1412049127.925:1776): avc: denied { search } for pid=22081 comm="zebra" name="sss" dev="dm-0" ino=4549 scontext=system_u:system_r:zebra_t:s0 tcontext=system_u:object_r:sssd_var_lib_t:s0 tclass=dir type=AVC msg=audit(1412049127.925:1777): avc: denied { search } for pid=22081 comm="zebra" name="sss" dev="dm-0" ino=4549 scontext=system_u:system_r:zebra_t:s0 tcontext=system_u:object_r:sssd_var_lib_t:s0 tclass=dir Expected results: Running zebra daemon. Additional info: Courtesy of audit2allow: require { type sssd_t; type sssd_var_lib_t; type sssd_public_t; type zebra_t; class sock_file write; class unix_stream_socket connectto; class file { read getattr open }; class dir search; } #============= zebra_t ============== allow zebra_t sssd_public_t:dir search; allow zebra_t sssd_public_t:file { read getattr open }; allow zebra_t sssd_t:unix_stream_socket connectto; allow zebra_t sssd_var_lib_t:dir search; allow zebra_t sssd_var_lib_t:sock_file write;