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Bug 1859213 - AVC denial during ipa-adtrust-install --add-agents
Summary: AVC denial during ipa-adtrust-install --add-agents
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: ipa
Version: 8.3
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: rc
: ---
Assignee: Thomas Woerner
QA Contact: ipa-qe
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-07-21 13:26 UTC by Sergey Orlov
Modified: 2021-09-03 15:13 UTC (History)
10 users (show)

Fixed In Version: ipa-4.8.7-8.el8
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-11-04 02:51:20 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Fedora Pagure freeipa issue 8436 0 None None None 2020-07-29 12:45:01 UTC
Red Hat Product Errata RHSA-2020:4670 0 None None None 2020-11-04 02:51:37 UTC

Description Sergey Orlov 2020-07-21 13:26:23 UTC 
The bug is created as a copy of https://bugzilla.redhat.com/show_bug.cgi?id=1820298 (versions and AVC messages updated):

Description of problem:
When configuring an AD trust agent, the command ipa-adtrust-install --add-agents is unable to configure the additional agent.

Version-Release number of selected component (if applicable):
ipa-server-4.8.7-4.module+el8.3.0+7221+eedbd403
selinux-policy-3.14.3-48.el8

How reproducible:
Always

Steps to Reproduce:
1. install ipa master with ipa-server-install
2. install ipa replica with ipa-replica-install
3. run ipa-adtrust-install --add-sids --a password --enable-compat --add-agents
When the command prompts for configuration of additional masters, answer yes

Actual results:
The command fails to configure the replica as a trust agent and prints:
WARNING: you MUST manually enable the Schema compatibility Plugin and 

WARNING: you MUST restart (both "ipactl restart" and "systemctl restart sssd")
the following IPA masters in order to activate them to serve information about
users from trusted forests:

<replica-fqdn>

Expected results:
The command should succeed.


Additional info:
ipa-adtrust-install launches a remote command on the replica though IPA XMLRPC. This command is using oddjob to execute a CLI but when SE linux is in enforcing mode, this mechanism fails with the following AVC:

time->Tue Jul 21 09:21:25 2020
type=PROCTITLE msg=audit(1595337685.098:640): proctitle=2F7573722F7362696E2F6F64646A6F6264002D6E002D70002F7661722F72756E2F6F64646A6F62642E706964002D7400333030
type=SYSCALL msg=audit(1595337685.098:640): arch=c000003e syscall=59 success=no exit=-13 a0=56160271e4d0 a1=561602720e20 a2=56160272ea90 a3=0 items=0 ppid=9514 pid=10077 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="oddjobd" exe="/usr/sbin/oddjobd" subj=system_u:system_r:oddjob_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(1595337685.098:640): avc:  denied  { transition } for  pid=10077 comm="oddjobd" path="/usr/libexec/ipa/oddjob/org.freeipa.server.trust-enable-agent" dev="vda1" ino=1741562 scontext=system_u:system_r:oddjob_t:s0-s0:c0.c1023 tcontext=system_u:system_r:httpd_t:s0 tclass=process permissive=0

On Fedora 31+, freeipa delivers his own selinux policy and the following line was added in selinux/ipa.fc to fix the issue:

/usr/libexec/ipa/oddjob/org\.freeipa\.server\.trust-enable-agent  --  gen_context(system_u:object_r:ipa_helper_exec_t,s0)
Comment 19 errata-xmlrpc 2020-11-04 02:51:20 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
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