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Bug 2094155 - rhel9 avc denied with rm and dhclient-script
Summary: rhel9 avc denied with rm and dhclient-script
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: selinux-policy
Version: 9.1
Hardware: Unspecified
OS: Linux
medium
medium
Target Milestone: rc
: 9.1
Assignee: Zdenek Pytela
QA Contact: Milos Malik
URL:
Whiteboard:
: 2173479 (view as bug list)
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2022-06-07 02:22 UTC by Hekai Wang
Modified: 2023-02-27 16:06 UTC (History)
3 users (show)

Fixed In Version: selinux-policy-34.1.35-1.el9
Doc Type: No Doc Update
Doc Text:
Clone Of:
Environment:
Last Closed: 2022-11-15 11:13:52 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Github fedora-selinux selinux-policy pull 1250 0 None open Allow dhclient manage pid files used by chronyd 2022-06-21 15:49:42 UTC
Red Hat Issue Tracker RHELPLAN-124414 0 None None None 2022-06-07 02:38:04 UTC
Red Hat Product Errata RHBA-2022:8283 0 None None None 2022-11-15 11:14:08 UTC

Description Hekai Wang 2022-06-07 02:22:39 UTC 
Description of problem:
rhel9 avc denied with rm and dhclient-script

Version-Release number of selected component (if applicable):
[root@dell-per740-43 ~]# rpm -qa | grep selinux
libselinux-3.3-2.el9.x86_64
libselinux-utils-3.3-2.el9.x86_64
rpm-plugin-selinux-4.16.1.3-12.el9_0.x86_64
selinux-policy-34.1.32-1.el9.noarch
selinux-policy-targeted-34.1.32-1.el9.noarch
python3-libselinux-3.3-2.el9.x86_64
openvswitch-selinux-extra-policy-1.0-31.el9fdp.noarch
flatpak-selinux-1.12.7-1.el9.noarch
[root@dell-per740-43 ~]# rpm -qa | grep dhc
dhcp-common-4.4.2-15.b1.el9.noarch
dhcp-client-4.4.2-15.b1.el9.x86_64
[root@dell-per740-43 ~]# uname -a
Linux dell-per740-43.rhts.eng.pek2.redhat.com 5.14.0-96.el9.x86_64 #1 SMP PREEMPT_DYNAMIC Thu May 19 07:21:30 EDT 2022 x86_64 x86_64 x86_64 GNU/Linux


How reproducible:
Always .

Steps to Reproduce:
SELinux status:                 enabled
SELinuxfs mount:                /sys/fs/selinux
SELinux root directory:         /etc/selinux
Loaded policy name:             targeted
Current mode:                   permissive
Mode from config file:          enforcing
Policy MLS status:              enabled
Policy deny_unknown status:     allowed
Memory protection checking:     actual (secure)
Max kernel policy version:      33
selinux-policy-34.1.32-1.el9.noarch
----
time->Mon Jun  6 09:32:22 2022
type=PROCTITLE msg=audit(1654522342.256:162): proctitle=726D002D66002F72756E2F6368726F6E792D646863702F656E6F312E736F7572636573
type=SYSCALL msg=audit(1654522342.256:162): arch=c000003e syscall=262 success=no exit=-13 a0=ffffff9c a1=5612838376a0 a2=561283837610 a3=100 items=0 ppid=10961 pid=11001 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="rm" exe="/usr/bin/rm" subj=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(1654522342.256:162): avc:  denied  { getattr } for  pid=11001 comm="rm" path="/run/chrony-dhcp/eno1.sources" dev="tmpfs" ino=1899 scontext=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 tcontext=system_u:object_r:chronyd_var_run_t:s0 tclass=file permissive=0
----
time->Mon Jun  6 09:32:22 2022
type=PROCTITLE msg=audit(1654522342.256:163): proctitle=726D002D66002F72756E2F6368726F6E792D646863702F656E6F312E736F7572636573
type=SYSCALL msg=audit(1654522342.256:163): arch=c000003e syscall=263 success=no exit=-13 a0=ffffff9c a1=561283836380 a2=0 a3=100 items=0 ppid=10961 pid=11001 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="rm" exe="/usr/bin/rm" subj=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(1654522342.256:163): avc:  denied  { write } for  pid=11001 comm="rm" name="chrony-dhcp" dev="tmpfs" ino=1635 scontext=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 tcontext=system_u:object_r:chronyd_var_run_t:s0 tclass=dir permissive=0
----
time->Mon Jun  6 09:32:22 2022
type=PROCTITLE msg=audit(1654522342.257:164): proctitle=2F7573722F62696E2F62617368002F7573722F7362696E2F6468636C69656E742D736372697074
type=SYSCALL msg=audit(1654522342.257:164): arch=c000003e syscall=257 success=no exit=-13 a0=ffffff9c a1=55b0532bdba0 a2=441 a3=1b6 items=0 ppid=10944 pid=10961 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="dhclient-script" exe="/usr/bin/bash" subj=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(1654522342.257:164): avc:  denied  { append } for  pid=10961 comm="dhclient-script" name="eno1.sources" dev="tmpfs" ino=1899 scontext=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 tcontext=system_u:object_r:chronyd_var_run_t:s0 tclass=file permissive=0
----
time->Mon Jun  6 09:32:22 2022
type=PROCTITLE msg=audit(1654522342.257:165): proctitle=2F7573722F62696E2F62617368002F7573722F7362696E2F6468636C69656E742D736372697074
type=SYSCALL msg=audit(1654522342.257:165): arch=c000003e syscall=257 success=no exit=-13 a0=ffffff9c a1=55b0532bdba0 a2=401 a3=0 items=0 ppid=10944 pid=10961 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="dhclient-script" exe="/usr/bin/bash" subj=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(1654522342.257:165): avc:  denied  { append } for  pid=10961 comm="dhclient-script" name="eno1.sources" dev="tmpfs" ino=1899 scontext=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 tcontext=system_u:object_r:chronyd_var_run_t:s0 tclass=file permissive=0
----
time->Mon Jun  6 09:32:22 2022
type=PROCTITLE msg=audit(1654522342.257:166): proctitle=2F7573722F62696E2F62617368002F7573722F7362696E2F6468636C69656E742D736372697074
type=SYSCALL msg=audit(1654522342.257:166): arch=c000003e syscall=257 success=no exit=-13 a0=ffffff9c a1=55b0532b2560 a2=441 a3=1b6 items=0 ppid=10944 pid=10961 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="dhclient-script" exe="/usr/bin/bash" subj=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(1654522342.257:166): avc:  denied  { append } for  pid=10961 comm="dhclient-script" name="eno1.sources" dev="tmpfs" ino=1899 scontext=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 tcontext=system_u:object_r:chronyd_var_run_t:s0 tclass=file permissive=0
----
time->Mon Jun  6 09:32:22 2022
type=PROCTITLE msg=audit(1654522342.257:167): proctitle=2F7573722F62696E2F62617368002F7573722F7362696E2F6468636C69656E742D736372697074
type=SYSCALL msg=audit(1654522342.257:167): arch=c000003e syscall=257 success=no exit=-13 a0=ffffff9c a1=55b0532b2560 a2=401 a3=0 items=0 ppid=10944 pid=10961 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="dhclient-script" exe="/usr/bin/bash" subj=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(1654522342.257:167): avc:  denied  { append } for  pid=10961 comm="dhclient-script" name="eno1.sources" dev="tmpfs" ino=1899 scontext=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 tcontext=system_u:object_r:chronyd_var_run_t:s0 tclass=file permissive=0
----
time->Mon Jun  6 09:32:22 2022
type=PROCTITLE msg=audit(1654522342.257:168): proctitle=2F7573722F62696E2F62617368002F7573722F7362696E2F6468636C69656E742D736372697074
type=SYSCALL msg=audit(1654522342.257:168): arch=c000003e syscall=257 success=no exit=-13 a0=ffffff9c a1=55b0532b25c0 a2=441 a3=1b6 items=0 ppid=10944 pid=10961 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="dhclient-script" exe="/usr/bin/bash" subj=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(1654522342.257:168): avc:  denied  { append } for  pid=10961 comm="dhclient-script" name="eno1.sources" dev="tmpfs" ino=1899 scontext=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 tcontext=system_u:object_r:chronyd_var_run_t:s0 tclass=file permissive=0
----
time->Mon Jun  6 09:32:22 2022
type=PROCTITLE msg=audit(1654522342.257:169): proctitle=2F7573722F62696E2F62617368002F7573722F7362696E2F6468636C69656E742D736372697074
type=SYSCALL msg=audit(1654522342.257:169): arch=c000003e syscall=257 success=no exit=-13 a0=ffffff9c a1=55b0532b25c0 a2=401 a3=0 items=0 ppid=10944 pid=10961 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="dhclient-script" exe="/usr/bin/bash" subj=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(1654522342.257:169): avc:  denied  { append } for  pid=10961 comm="dhclient-script" name="eno1.sources" dev="tmpfs" ino=1899 scontext=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 tcontext=system_u:object_r:chronyd_var_run_t:s0 tclass=file permissive=0

Actual results:
avc denied 

Expected results:
No avc denied  

Additional info:
Comment 3 Zdenek Pytela 2022-06-22 08:34:34 UTC 
Commit to backport:
commit d3f2dfffe9293a47d57a17e804fc6c590e19081d (HEAD -> rawhide, upstream/rawhide)
Author: Zdenek Pytela <zpytela>
Date:   Tue Jun 21 17:45:28 2022 +0200

    Allow dhclient manage pid files used by chronyd
Comment 14 errata-xmlrpc 2022-11-15 11:13:52 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-2022:8283
Comment 15 Zdenek Pytela 2023-02-27 16:06:27 UTC 
*** Bug 2173479 has been marked as a duplicate of this bug. ***
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