2114902 – selinux-policy AVC denials during ipa trust-add

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Bug 2114902 - selinux-policy AVC denials during ipa trust-add

Summary: selinux-policy AVC denials during ipa trust-add

Keywords:
Status:	CLOSED CURRENTRELEASE
Alias:	None
Product:	Red Hat Enterprise Linux 9
Classification:	Red Hat
Component:	selinux-policy
Sub Component:
Version:	9.1
Hardware:	Unspecified
OS:	Linux
Priority:	medium
Severity:	medium
Target Milestone:	rc
Target Release:	9.2
Assignee:	Nikola Knazekova
QA Contact:	Milos Malik
Docs Contact:
URL:
Whiteboard:
Depends On:	2115691
Blocks:	2168961
TreeView+	depends on / blocked

Reported:	2022-08-03 13:39 UTC by anuja
Modified:	2023-02-10 18:04 UTC (History)
CC List:	8 users (show)
Fixed In Version:
Doc Type:	No Doc Update
Doc Text:
Clone Of:	2106006
Clones:	2117199 2168961 (view as bug list)
Environment:
Last Closed:	2023-02-10 18:04:35 UTC
Type:	Bug
Target Upstream Version:
Embargoed:
Dependent Products:

Attachments	(Terms of Use)

Links
System	ID	Private	Priority	Status	Summary	Last Updated
Red Hat Issue Tracker	RHELPLAN-130042	0	None	None	None	2022-08-03 13:44:33 UTC

Internal Links: 2117199

Description anuja 2022-08-03 13:39:09 UTC

Description of problem:
THis is clone of https://bugzilla.redhat.com/show_bug.cgi?id=2106006


Version-Release number of selected component (if applicable):
selinux-policy-34.1.38-1.el9.noarch
ipa-server-4.10.0-5.el9.x86_64

How reproducible:
Always

Steps to Reproduce:
Steps From https://bugzilla.redhat.com/show_bug.cgi?id=2106006#c0

Comment 2 Zdenek Pytela 2022-08-03 13:53:59 UTC

The same problem was reported in bz#2102084 and is expected be fixed.

    * Fri Jul 15 2022 Nikola Knazekova <nknazeko> - 34.1.38-1
    - Allow some domains use sd_notify()
    Resolves: rhbz#2056565
    - Revert "Allow rabbitmq to use systemd notify"
    Resolves: rhbz#2056565
    - Update winbind_rpcd_t
    Resolves: rhbz#2102084
^^^

Can you ensure the latest policy was used?
What are the AVC denials?

Comment 3 anuja 2022-08-04 09:15:02 UTC

In pipeline we are using 
[root@master ~]# rpm -qa ipa-server selinux-policy
selinux-policy-34.1.38-1.el9.noarch
ipa-server-4.10.0-5.el9.x86_64

avc logs and steps are attached.

Comment 5 anuja 2022-08-05 07:18:46 UTC

Reported new bug in upstream fedora36 for new AVC failures 
https://bugzilla.redhat.com/show_bug.cgi?id=2115691

Comment 14 Nikola Knazekova 2023-01-25 10:07:02 UTC

Hi frenaud,

the fix was based on reported AVC messages from Anuja.
Nothing has changed in our policy.

Feel free to close it.

Comment 15 Florence Blanc-Renaud 2023-01-26 10:59:01 UTC

Reopening as the failure happens on RHEL 9.1

# rpm -qa ipa-server ipa-selinux selinux-policy
selinux-policy-34.1.43-1.el9_1.1.noarch
ipa-selinux-4.10.0-8.el9_1.noarch
ipa-server-4.10.0-8.el9_1.x86_64

It looks like one patch was not backported to RHEL 9.1:
# sesearch --source smbd_t --target winbind_rpcd_t --allow
allow domain domain:fd use; [ domain_fd_use ]:True
allow domain domain:key { link search };
allow smbd_t winbind_rpcd_t:process transition;
allow smbd_t winbind_rpcd_t:unix_stream_socket connectto;


On RHEL 9.2 (where the test is succeeding), the same command shows:
# sesearch --source smbd_t --target winbind_rpcd_t --allow
allow domain domain:anon_inode { create getattr ioctl map read write };
allow domain domain:fd use; [ domain_fd_use ]:True
allow domain domain:key { link search };
allow smbd_t winbind_rpcd_t:process { noatsecure transition };               <<<< This is the missing patch
allow smbd_t winbind_rpcd_t:unix_stream_socket connectto;

If I add the following module on RHEL 9.1, the test passes:
(allow smbd_t winbind_rpcd_t (process (noatsecure)))


Moving to selinux-policy component.

Comment 19 Florence Blanc-Renaud 2023-01-30 15:35:19 UTC

Justification for z-stream request:
this issue prevents using the trust feature in selinux enforcing mode. This feature is important to many IdM customers and RHEL 9.1 is the most recent version available on RHEL 9.

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