RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Bug 1831732 - AVC avc: denied { dac_override } for comm="ods-enforcerd
Summary: AVC avc: denied { dac_override } for comm="ods-enforcerd
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: opendnssec
Version: 8.3
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: 8.0
Assignee: François Cami
QA Contact: ipa-qe
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-05-05 14:29 UTC by Alexander Bokovoy
Modified: 2020-11-04 02:51 UTC (History)
2 users (show)

Fixed In Version: opendnssec-2.1.6-2
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-11-04 02:50:41 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description Alexander Bokovoy 2020-05-05 14:29:34 UTC 
This bug was initially created as a copy of Bug #1825812

I am copying this bug because: 



Description of problem:
FreeIPA with DNSSEC support is failing to install on a F32 machine. It looks like the problem is caused by an AVC in ods-enforcerd. The ODS enforcer daemon starts as root but root has no permission to read/write files in /var/opendnssec and /run/opendnssec. The files are owned by ods:ods and most directories are not accessible by other users.

Version-Release number of selected component (if applicable):
opendnssec-2.1.6-4.fc32.x86_64
freeipa-server-4.8.6-1.fc32.x86_64
selinux-policy-3.14.5-32.fc32.noarch


How reproducible:
always

Steps to Reproduce:
1. ipa-server-install
2. ipa-dns-install --dnssec-master --auto-reverse --auto-forwarders -U


Actual results:
DNS server installation is failing while ods-enforcerd is started:

  [7/8]: starting OpenDNSSEC enforcer", "  [error] CalledProcessError: CalledProcessError(Command ['/bin/systemctl', 'restart', 'ods-enforcerd.service'] returned non-zero exit status 1: 'Job for ods-enforcerd.service failed because the control process exited with error code.

  ods-enforcerd[27230]: Could not connect to database or database not set up properly.

ausearch is showing multiple AVCs:
  AVC avc:  denied  { dac_override } for  pid=27230 comm="ods-enforcerd" capability=1  scontext=system_u:system_r:opendnssec_t:s0 tcontext=system_u:system_r:opendnssec_t:s0 tclass=capability permissive=0

Expected results:
no error

Additional info:
# ls -laZ /var/run/opendnssec/ /var/opendnssec/
/var/opendnssec/:
total 128
drwxrwx---.  6 root ods  system_u:object_r:opendnssec_var_t:s0       4096 Apr 20 06:16 .
drwxr-xr-x. 21 root root system_u:object_r:var_t:s0                  4096 Apr 20 06:05 ..
drwxrwx---.  2 ods  ods  system_u:object_r:opendnssec_var_t:s0       4096 Mar 10 22:53 enforcer
-rw-rw----.  1 ods  ods  unconfined_u:object_r:opendnssec_var_t:s0 102400 Apr 20 06:16 kasp.db
drwxrwx---.  2 ods  ods  system_u:object_r:opendnssec_var_t:s0       4096 Mar 10 22:53 signconf
drwxrwx---.  2 ods  ods  system_u:object_r:opendnssec_var_t:s0       4096 Mar 10 22:53 signed
drwxrwx---.  2 ods  ods  system_u:object_r:opendnssec_var_t:s0       4096 Apr 20 06:16 tmp

/var/run/opendnssec/:
total 0
drwxr-xr-x.  2 ods  ods  system_u:object_r:opendnssec_var_run_t:s0   60 Apr 20 06:16 .
drwxr-xr-x. 34 root root system_u:object_r:var_run_t:s0            1000 Apr 20 06:15 ..
srw-rw-rw-.  1 root root system_u:object_r:opendnssec_var_run_t:s0    0 Apr 20 06:16 engine.sock

# auditctl -w /etc/shadow -p w
# setenforce 0
# systemctl restart ods-enforcerd.service 
# ausearch -m AVC
...
time->Mon Apr 20 06:24:35 2020
type=PROCTITLE msg=audit(1587378275.081:2130): proctitle="/usr/sbin/ods-enforcerd"
type=PATH msg=audit(1587378275.081:2130): item=0 name="/var/opendnssec/kasp.db" inode=267656 dev=fc:01 mode=0100660 ouid=995 ogid=992 rdev=00:00 obj=unconfined_u:object_r:opendnssec_var_t:s0 nametype=NORMAL cap_fp=0 cap_fi=0 cap_fe=0 cap_fver=0 cap_frootid=0
type=CWD msg=audit(1587378275.081:2130): cwd="/"
type=SYSCALL msg=audit(1587378275.081:2130): arch=c000003e syscall=257 success=yes exit=4 a0=ffffff9c a1=55774f9eebac a2=a0002 a3=0 items=1 ppid=1 pid=26878 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="ods-enforcerd" exe="/usr/sbin/ods-enforcerd" subj=system_u:system_r:opendnssec_t:s0 key=(null)
type=AVC msg=audit(1587378275.081:2130): avc:  denied  { dac_override } for  pid=26878 comm="ods-enforcerd" capability=1  scontext=system_u:system_r:opendnssec_t:s0 tcontext=system_u:system_r:opendnssec_t:s0 tclass=capability permissive=1
----
time->Mon Apr 20 06:24:35 2020
type=PROCTITLE msg=audit(1587378275.083:2131): proctitle="/usr/sbin/ods-enforcerd"
type=PATH msg=audit(1587378275.083:2131): item=0 name="/var/opendnssec/enforcer" inode=267655 dev=fc:01 mode=040770 ouid=995 ogid=992 rdev=00:00 obj=system_u:object_r:opendnssec_var_t:s0 nametype=NORMAL cap_fp=0 cap_fi=0 cap_fe=0 cap_fver=0 cap_frootid=0
type=CWD msg=audit(1587378275.083:2131): cwd="/"
type=SYSCALL msg=audit(1587378275.083:2131): arch=c000003e syscall=80 success=yes exit=0 a0=55774f9e74a0 a1=3e3 a2=3e0 a3=2000 items=1 ppid=1 pid=26878 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="ods-enforcerd" exe="/usr/sbin/ods-enforcerd" subj=system_u:system_r:opendnssec_t:s0 key=(null)
type=AVC msg=audit(1587378275.083:2131): avc:  denied  { dac_read_search } for  pid=26878 comm="ods-enforcerd" capability=2  scontext=system_u:system_r:opendnssec_t:s0 tcontext=system_u:system_r:opendnssec_t:s0 tclass=capability permissive=1
Comment 1 Alexander Bokovoy 2020-05-05 14:31:46 UTC 
Test criteria: there should be no DAC override AVCs after installing RHEL IdM with DNSSEC master enabled.
Comment 5 Sumedh Sidhaye 2020-08-17 09:43:54 UTC 
Build used for verification

ipa-client-4.8.7-8.module+el8.3.0+7513+a375844a.x86_64
ipa-client-common-4.8.7-8.module+el8.3.0+7513+a375844a.noarch
ipa-common-4.8.7-8.module+el8.3.0+7513+a375844a.noarch
ipa-healthcheck-core-0.4-4.module+el8.2.0+5489+95477d9f.noarch
ipa-selinux-4.8.7-8.module+el8.3.0+7513+a375844a.noarch
ipa-server-4.8.7-8.module+el8.3.0+7513+a375844a.x86_64
ipa-server-common-4.8.7-8.module+el8.3.0+7513+a375844a.noarch
ipa-server-dns-4.8.7-8.module+el8.3.0+7513+a375844a.noarch
ipa-server-trust-ad-4.8.7-8.module+el8.3.0+7513+a375844a.x86_64
opendnssec-2.1.6-2.module+el8.3.0+6580+328a3362.x86_64


============================= test session starts ==============================
platform linux -- Python 3.6.8, pytest-3.10.1, py-1.9.0, pluggy-0.13.1 -- /usr/libexec/platform-python
cachedir: /home/cloud-user/.pytest_cache
metadata: {'Python': '3.6.8', 'Platform': 'Linux-4.18.0-232.el8.x86_64-x86_64-with-redhat-8.3-Ootpa', 'Packages': {'pytest': '3.10.1', 'py': '1.9.0', 'pluggy': '0.13.1'}, 'Plugins': {'metadata': '1.10.0', 'html': '1.22.1', 'multihost': '3.0', 'sourceorder': '0.5'}}
rootdir: /usr/lib/python3.6/site-packages/ipatests, inifile:
plugins: metadata-1.10.0, html-1.22.1, multihost-3.0, sourceorder-0.5
collecting ... collected 11 items

test_integration/test_dnssec.py::TestInstallDNSSECLast::test_install_dnssec_master PASSED [  9%]
test_integration/test_dnssec.py::TestInstallDNSSECLast::test_if_zone_is_signed_master PASSED [ 18%]
test_integration/test_dnssec.py::TestInstallDNSSECLast::test_if_zone_is_signed_replica PASSED [ 27%]
test_integration/test_dnssec.py::TestInstallDNSSECLast::test_disable_reenable_signing_master PASSED [ 36%]
test_integration/test_dnssec.py::TestInstallDNSSECLast::test_disable_reenable_signing_replica PASSED [ 45%]
test_integration/test_dnssec.py::TestInstallDNSSECFirst::test_sign_root_zone PASSED [ 54%]
test_integration/test_dnssec.py::TestInstallDNSSECFirst::test_chain_of_trust xfail [ 63%]
test_integration/test_dnssec.py::TestInstallDNSSECFirst::test_resolvconf PASSED [ 72%]
test_integration/test_dnssec.py::TestMigrateDNSSECMaster::test_migrate_dnssec_master PASSED [ 81%]
test_integration/test_dnssec.py::TestInstallNoDnssecValidation::test_install_withDnssecValidation PASSED [ 90%]
test_integration/test_dnssec.py::TestInstallNoDnssecValidation::test_install_noDnssecValidation PASSED [100%]

---------------- generated xml file: /home/cloud-user/junit.xml ----------------
----------- generated html file: file:///home/cloud-user/report.html -----------
=========================== short test summary info ============================
XFAIL test_integration/test_dnssec.py::TestInstallDNSSECFirst::()::test_chain_of_trust
  dnspython issue 343
=================== 10 passed, 1 xfailed in 4303.77 seconds ====================


No dac_override AVCs were seen on master and replicas

[root@master ~]# systemctl  show ods-enforcerd.service  -p User
User=ods
[root@master ~]# ausearch -m AVC | grep 'dac_override'
[root@master ~]# 

[root@replica1 ~]# ausearch -m AVC | grep 'dac_override'
[root@replica1 ~]# 
[root@replica1 ~]# 
[root@replica1 ~]# systemctl  show ods-enforcerd.service  -p User
User=ods
[root@replica1 ~]#

[root@replica2 ~]# ausearch -m AVC | grep 'dac_override'
[root@replica2 ~]#
[root@replica2 ~]# systemctl  show ods-enforcerd.service  -p User
User=ods
[root@replica2 ~]# 


Based on above observations marking Bugzilla verified
Comment 9 errata-xmlrpc 2020-11-04 02:50:41 UTC 
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 (Moderate: idm:DL1 and idm:client security, bug fix, and enhancement update), 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://access.redhat.com/errata/RHSA-2020:4670
Note You need to log in before you can comment on or make changes to this bug.