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Bug 1379352 - AVC denials when running dhpcd resource agent
Summary: AVC denials when running dhpcd resource agent
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: selinux-policy
Version: 7.3
Hardware: Unspecified
OS: Unspecified
low
low
Target Milestone: rc
: ---
Assignee: Lukas Vrabec
QA Contact: BaseOS QE Security Team
URL:
Whiteboard:
: 1388442 (view as bug list)
Depends On:
Blocks: 1393066
TreeView+ depends on / blocked
 
Reported: 2016-09-26 12:45 UTC by michal novacek
Modified: 2023-09-14 03:31 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed:
Target Upstream Version:
Embargoed:

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Description michal novacek 2016-09-26 12:45:50 UTC 
Info: Searching AVC errors produced since 1474892210.29 (Mon Sep 26 14:16:50 2016)
Searching logs...
Running '/usr/bin/env LC_ALL=en_US.UTF-8 /sbin/ausearch -m AVC -m USER_AVC -m SELINUX_ERR -ts 09/26/2016 14:16:50 < /dev/null >/mnt/testarea/tmp.rhts-db-submit-result.rFRjd8 2>&1'
----
time->Mon Sep 26 14:22:58 2016
type=USER_AVC msg=audit(1474892578.631:254): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='avc:  received policyload notice (seqno=3)  exe="/usr/lib/systemd/systemd" sauid=0 hostname=? addr=? terminal=?'
----
time->Mon Sep 26 14:23:05 2016
type=SYSCALL msg=audit(1474892585.830:269): arch=c000003e syscall=9 success=yes exit=140244910362624 a0=0 a1=208470 a2=5 a3=802 items=0 ppid=27132 pid=27133 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="dhcpd" exe="/usr/sbin/dhcpd" subj=system_u:system_r:dhcpd_t:s0 key=(null)
type=AVC msg=audit(1474892585.830:269): avc:  denied  { execute } for  pid=27133 comm="dhcpd" path="/lib64/libnss_sss.so.2" dev="dm-0" ino=9498937 scontext=system_u:system_r:dhcpd_t:s0 tcontext=system_u:object_r:dhcpd_state_t:s0 tclass=file
----
time->Mon Sep 26 14:23:27 2016
type=SYSCALL msg=audit(1474892607.507:392): arch=c000003e syscall=9 success=yes exit=140418800103424 a0=0 a1=208470 a2=5 a3=802 items=0 ppid=27791 pid=27792 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="dhcpd" exe="/usr/sbin/dhcpd" subj=system_u:system_r:dhcpd_t:s0 key=(null)
type=AVC msg=audit(1474892607.507:392): avc:  denied  { execute } for  pid=27792 comm="dhcpd" path="/lib64/libnss_sss.so.2" dev="dm-0" ino=9498937 scontext=system_u:system_r:dhcpd_t:s0 tcontext=system_u:object_r:dhcpd_state_t:s0 tclass=file
Fail: AVC messages found.
Checking for errors...
Using stronger AVC checks.
	Define empty RHTS_OPTION_STRONGER_AVC parameter if this causes any problems.
Running 'cat /mnt/testarea/tmp.rhts-db-submit-result.rFRjd8 | /sbin/ausearch -m AVC -m SELINUX_ERR'
Fail: AVC messages found.
Running 'cat %s | /sbin/ausearch -m USER_AVC >/mnt/testarea/tmp.rhts-db-submit-result.u8UuL8 2>&1'
Info: No AVC messages found.
/bin/grep 'avc: ' /mnt/testarea/dmesg.log | /bin/grep --invert-match TESTOUT.log
No AVC messages found in dmesg
Running '/usr/sbin/sestatus'
SELinux status:                 enabled
SELinuxfs mount:                /sys/fs/selinux
SELinux root directory:         /etc/selinux
Loaded policy name:             targeted
Current mode:                   permissive
Mode from config file:          permissive
Policy MLS status:              enabled
Policy deny_unknown status:     allowed
Max kernel policy version:      28
Running 'rpm -q selinux-policy || true'
selinux-policy-3.13.1-100.el7.noarch
Comment 1 Milos Malik 2016-09-26 13:17:09 UTC 
The /lib64/libnss_sss.so.2 file is mislabeled

# matchpathcon /lib64/libnss_sss.so.2
/lib64/libnss_sss.so.2	system_u:object_r:lib_t:s0
#

Please run following command on your machine:

# restorecon -Rv /lib64
Comment 4 michal novacek 2016-10-11 08:52:07 UTC 
Is this something that I have broken myself or is this something that needs to be fixed in selinux-policy?
Comment 5 Lukas Vrabec 2016-10-11 09:15:28 UTC 
It looks like that you system is/was mislabeled, so there is no need to change it in selinux-policy.
Comment 6 Miroslav Grepl 2016-10-14 12:20:06 UTC 
Are you able to reproduce it? Where does it come from? Beaker?

Thank you.
Comment 7 Lukas Vrabec 2016-11-14 13:58:45 UTC 
*** Bug 1388442 has been marked as a duplicate of this bug. ***
Comment 9 Milos Malik 2017-08-17 08:56:18 UTC 
Is it still relevant? Do you still see SELinux denials mentioned in comment#0? If not, we will close the bug because of mislableled filesystem on your side. Mislabeled files can be repaired via restorecon -Rv ...
Comment 10 Lukas Vrabec 2017-10-12 12:20:28 UTC 
We're going to close this bug as WONTFIX because

 * of limited capacity of selinux-policy developers
 * the bug is related to EPEL component or 3rd party SW only
 * the bug appears in unsupported configuration 

We believe this bug can be fixed via a local policy module.
For more information please see: 

 * https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/selinux_users_and_administrators_guide/sect-security-enhanced_linux-troubleshooting-fixing_problems#sect-Security-Enhanced_Linux-Fixing_Problems-Allowing_Access_audit2allow

If you disagree, please re-open the bug.
Comment 11 Lukas Vrabec 2017-10-12 12:22:02 UTC 
We're going to close this bug as WONTFIX because

 * of limited capacity of selinux-policy developers
 * the bug is related to EPEL component or 3rd party SW only
 * the bug appears in unsupported configuration 

We believe this bug can be fixed via a local policy module.
For more information please see: 

 * https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/selinux_users_and_administrators_guide/sect-security-enhanced_linux-troubleshooting-fixing_problems#sect-Security-Enhanced_Linux-Fixing_Problems-Allowing_Access_audit2allow

If you disagree, please re-open the bug.
Comment 12 Red Hat Bugzilla 2023-09-14 03:31:23 UTC 
The needinfo request[s] on this closed bug have been removed as they have been unresolved for 1000 days
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