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Bug 2177607

Summary: [RHEL8.6/Insights/SELinux/Bug] AVC Compliance irq with selinux-policy-3.14.3-95.el8_6.6
Product: Red Hat Enterprise Linux 8 Reporter: Nikhil Gupta <ngupta>
Component: selinux-policyAssignee: Zdenek Pytela <zpytela>
Status: CLOSED ERRATA QA Contact: Milos Malik <mmalik>
Severity: low Docs Contact:
Priority: urgent    
Version: 8.6CC: lvrabec, mgoyal, mhaicman, mmalik, peter.vreman, vmojzis, zpytela
Target Milestone: rcKeywords: Triaged, ZStream
Target Release: 8.9Flags: pm-rhel: mirror+
Hardware: Unspecified   
OS: Linux   
Whiteboard:
Fixed In Version: selinux-policy-3.14.3-118.el8 Doc Type: No Doc Update
Doc Text:
Story Points: ---
Clone Of:
: 2209890 2233931 2233932 (view as bug list) Environment:
Last Closed: 2023-11-14 15:47:46 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:
Bug Depends On:    
Bug Blocks: 2209890, 2233931, 2233932    
Deadline: 2023-04-24   

Description Nikhil Gupta 2023-03-13 06:32:29 UTC
Description of problem:

Something newly introduced by SCAP CIS policy and/or the selinux-policy released this week together triggers this AVC for insights compliance on the CIS policy:
~~~
$ rpm -q selinux-policy scap-security-guide
selinux-policy-3.14.3-95.el8_6.6.noarch
scap-security-guide-0.1.66-1.el8_6.noarch
~~~

~~~
sudo audit2allow -t insights_client_t -a
----
node=host.example.com type=PROCTITLE msg=audit(03/10/2023 06:24:21.245:32929) : proctitle=oscap xccdf eval --profile xccdf_org.ssgproject.content_profile_cis_server_l1 --lts /var/tmp/insights-client/insights-archiv
node=host.example.com type=PATH msg=audit(03/10/2023 06:24:21.245:32929) : item=0 name=/proc/irq inode=4026531861 dev=00:05 mode=dir,555 ouid=root ogid=root rdev=00:00 obstem_u:object_r:sysctl_irq_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0
node=host.example.com type=CWD msg=audit(03/10/2023 06:24:21.245:32929) : cwd=/root
node=host.example.com type=SYSCALL msg=audit(03/10/2023 06:24:21.245:32929) : arch=x86_64 syscall=openat success=yes exit=27 a0=AT_FDCWD a1=0x5601f768ca10 a2=O_RDONLY|O_NOCK|O_DIRECTORY|O_CLOEXEC a3=0x0 items=1 ppid=494573 pid=498401 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(nones=unset comm=probe_worker exe=/usr/bin/oscap subj=system_u:system_r:insights_client_t:s0-s0:c0.c1023 key=(null)
node=host.example.com type=AVC msg=audit(03/10/2023 06:24:21.245:32929) : avc:  denied  { read } for  pid=498401 comm=probe_worker name=irq dev="proc" ino=4026531861 scon=system_u:system_r:insights_client_t:s0-s0:c0.c1023 tcontext=system_u:object_r:sysctl_irq_t:s0 tclass=dir permissive=1
----
node=host.example.com type=PROCTITLE msg=audit(03/10/2023 06:24:21.245:32930) : proctitle=oscap xccdf eval --profile xccdf_org.ssgproject.content_profile_cis_server_l1 --lts /var/tmp/insights-client/insights-archiv
node=host.example.com type=PATH msg=audit(03/10/2023 06:24:21.245:32930) : item=0 name=/proc/irq/default_smp_affinity inode=4026531862 dev=00:05 mode=file,644 ouid=root oroot rdev=00:00 obj=system_u:object_r:sysctl_irq_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0
node=host.example.com type=CWD msg=audit(03/10/2023 06:24:21.245:32930) : cwd=/root
node=host.example.com type=SYSCALL msg=audit(03/10/2023 06:24:21.245:32930) : arch=x86_64 syscall=lstat success=yes exit=0 a0=0x5601f768ca10 a1=0x5601f7692de0 a2=0x5601f7e0 a3=0x0 items=1 ppid=494573 pid=498401 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=probe_er exe=/usr/bin/oscap subj=system_u:system_r:insights_client_t:s0-s0:c0.c1023 key=(null)
node=host.example.com type=AVC msg=audit(03/10/2023 06:24:21.245:32930) : avc:  denied  { getattr } for  pid=498401 comm=probe_worker path=/proc/irq/default_smp_affinity "proc" ino=4026531862 scontext=system_u:system_r:insights_client_t:s0-s0:c0.c1023 tcontext=system_u:object_r:sysctl_irq_t:s0 tclass=file permissive=1


$ sudo audit2allow -t insights_client_t -a

#============= insights_client_t ==============

allow insights_client_t sysctl_irq_t:dir read;
allow insights_client_t sysctl_irq_t:file getattr;
~~~


Version-Release number of selected component (if applicable):
selinux-policy-3.14.3-95.el8_6.6

How reproducible:
Always

Steps to Reproduce:
1. Register RHEL 8.6 host, having selinux-policy-3.14.3-95.el8_6.6, with Insights 
2. Register it to the cis_server_l1 compliance policy.
3. Run `insights-client --compliance` command

Actual results:
Triggers this AVC for insights compliance on the CIS policy .

Expected results:
The compliance command should finish successfully without any AVC triggered.

Comment 2 Zdenek Pytela 2023-03-20 14:29:34 UTC
insights-client hasn't been allowed this permission in the latest selinux-policy package version

Comment 4 Zdenek Pytela 2023-03-27 15:59:07 UTC
Commit to backport:
174e5da36 (HEAD -> rawhide, upstream/rawhide) Allow insights-client read all sysctls

Comment 27 errata-xmlrpc 2023-11-14 15:47:46 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-2023:7091