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Bug 2213605 - SELinux labels RIPE Atlas Probe/Anchor's /usr/sbin/ripe-atlas process as zebra_t
Summary: SELinux labels RIPE Atlas Probe/Anchor's /usr/sbin/ripe-atlas process as zebra_t
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: selinux-policy
Version: 9.2
Hardware: x86_64
OS: Linux
urgent
medium
Target Milestone: beta
: 9.3
Assignee: Nobody
QA Contact: Milos Malik
URL:
Whiteboard:
Depends On:
Blocks: 2229992
TreeView+ depends on / blocked
 
Reported: 2023-06-08 17:04 UTC by Robert Scheck
Modified: 2023-11-07 11:23 UTC (History)
6 users (show)

Fixed In Version: selinux-policy-38.1.18-1.el9
Doc Type: Bug Fix
Doc Text:
Cause: The policy contained the /usr/sbin/rip.* regex which was too broad and matched also binaries from other components, which leads to mislabeling of ripe-atlas Consequence: SELinux labels RIPE Atlas Probe/Anchor's /usr/sbin/ripe-atlas process as zebra_t Fix: Label only /usr/sbin/ripd and ripngd with zebra_exec_t Result: Other binaries are not labeled as zebra_t
Clone Of:
: 2229992 (view as bug list)
Environment:
Last Closed: 2023-11-07 08:52:30 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Bugzilla 2213604 0 medium CLOSED SELinux labels RIPE Atlas Probe/Anchor's /usr/sbin/ripe-atlas process as zebra_t 2023-06-29 16:44:04 UTC
Red Hat Issue Tracker RHELPLAN-159322 0 None None None 2023-06-08 17:06:58 UTC
Red Hat Product Errata RHBA-2023:6617 0 None None None 2023-11-07 08:52:45 UTC

Description Robert Scheck 2023-06-08 17:04:20 UTC 
Description of problem:
While trying to package RIPE Atlas Probe/Anchor for Fedora and EPEL, I had to learn that SELinux labels RIPE Atlas Probe/Anchor's /usr/sbin/ripe-atlas process as zebra_t, which makes RIPE Atlas Probe/Anchor unusable as the SELinux Zebra policy forbids many things RIPE Atlas Probe/Anchor needs to work.

Fortunately, this seems to be an unintended side effect in the SELinux policy as shipped in Fedora and RHEL:

$ grep /usr/sbin/rip /etc/selinux/targeted/contexts/files/file_contexts
/usr/sbin/rip.* --      system_u:object_r:zebra_exec_t:s0
$ 

For the Zebra/FRR component 'rip' (Routing Information Protocol) a wildcard was placed which likely impacts all software starting with '/usr/sbin/rip', even if it's not related to Zebra/FRR at all. Thus I propose the following simple fix, that does not impact Zebra/FRR's 'rip' but unbreaks RIPE Atlas Probe/Anchor's /usr/sbin/ripe-atlas (and I explicitly added a wildcard to cover possible future sub-components as well):

/usr/sbin/ripe-atlas.* -- system_u:object_r:bin_t:s0

Version-Release number of selected component (if applicable):
selinux-policy-targeted-38.1.11-2.0.1.el9_2.noarch

Actual Results:  
SELinux labels RIPE Atlas Probe/Anchor's /usr/sbin/ripe-atlas process as zebra_t when started via ripe-atlas.service

Expected Results:  
SELinux labels RIPE Atlas Probe/Anchor's /usr/sbin/ripe-atlas process as unconfined_t when started via ripe-atlas.service

Additional info:
Clone of bug #2213604 from Fedora for RHEL 9.
Comment 2 Zdenek Pytela 2023-06-28 20:23:18 UTC 
Commit to backport:
b91d9a5b6 (HEAD -> rawhide, upstream/rawhide) Label only /usr/sbin/ripd and ripngd with zebra_exec_t
Comment 4 Robert Scheck 2023-06-29 21:06:51 UTC 
Zdenek, is there a realistic chance for a backport to RHEL 9.2.z, if I file a RHBZ and a case via CEE/GSS?
Comment 6 Zdenek Pytela 2023-07-13 19:11:21 UTC 
(In reply to Robert Scheck from comment #4)
> Zdenek, is there a realistic chance for a backport to RHEL 9.2.z, if I file
> a RHBZ and a case via CEE/GSS?

There needs to be justification for accepting such a request.
Comment 7 Robert Scheck 2023-07-18 11:10:03 UTC 
I opened case 03565036 at the Red Hat customer portal and provided a justification there. In the end, we need the fix in RHEL 9.3 GA and RHEL 9.2.z. Please let me know if something else is needed.
Comment 9 Zdenek Pytela 2023-07-19 13:57:02 UTC 
Dmitri,

Please follow your organization workflow to request a z-stream backport, it's not done manually.
Comment 21 errata-xmlrpc 2023-11-07 08:52:30 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 (selinux-policy 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/RHBA-2023:6617
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