Bug 1067142

Summary: Ownership of /var/lib/dhcpd/dhcpd.leases reverts to root:root on every dhcpd start
Product: Red Hat Enterprise Linux 6 Reporter: Avram Lubkin <aviso>
Component: dhcpAssignee: Jiri Popelka <jpopelka>
Status: CLOSED ERRATA QA Contact: Release Test Team <release-test-team-automation>
Severity: low Docs Contact:
Priority: low    
Version: 6.6CC: atodorov, jhb, ljozsa, ovasik
Target Milestone: rcKeywords: Patch
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: dhcp-4.1.1-41.P1.el6 Doc Type: Bug Fix
Doc Text:
Cause: Everytime when dhcpd starts. Consequence: Ownership of /var/lib/dhcpd/dhcpd.leases file is changed from dhcpd:dhcpd to root:root. Fix: Patch was back-ported from Fedora. Result: Ownership of /var/lib/dhcpd/dhcpd.leases file is not changed.
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Clone Of: Environment:
Last Closed: 2014-10-14 04:31:39 UTC Type: Bug
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 1082640    
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Description Flags
DHCP Paranoia Patch none

Description Avram Lubkin 2014-02-19 19:27:24 UTC 
Created attachment 865188 [details]
DHCP Paranoia Patch

Description of problem:

On ever start, dhcpd reverts ownership of /var/lib/dhcpd/dhcpd.leases to root:root, where it should be dhcpd:dhcpd

This was a bug in Fedora 16, bug 837474
And Fedora 17, bug 866714

Version-Release number of selected component (if applicable):

dhcp-4.1.1-39.P1.el6

How reproducible:

Always

Steps to Reproduce:
1. Restart dhcpd service
2. Check ownership of /var/lib/dhcpd/dhcpd.leases

Actual results:
root:root

Expected results:
dhcpd:dhcpd

Additional info:

I've attached a patch based on the Fedora version.
http://pkgs.fedoraproject.org/cgit/dhcp.git/tree/dhcp-paranoia.patch

The patch includes all the code fixes, but doesn't include the man page updates.

After building and installing, it seemed to test fine except for an AVC denial preventing chown operation. The following rule fixed this issue:

allow dhcpd_t self:capability chown;
Comment 2 Jaromír Končický 2014-04-03 12:21:28 UTC 
cvs-commit http://bulk-mail.corp.redhat.com/archives/cvs-commits-list/2014-April/msg01424.html
Comment 4 jhb 2014-06-10 15:04:24 UTC 
The patch fixed this issue for us.
Comment 5 Alexander Todorov 2014-09-05 14:24:27 UTC 
After restart:

# ls -lZ /var/lib/dhcpd/dhcpd.leases 
-rw-r--r--. dhcpd dhcpd unconfined_u:object_r:dhcpd_state_t:s0 /var/lib/dhcpd/dhcpd.leases

Tested with dhcp-4.1.1-43.P1.el6.x86_64
Comment 7 errata-xmlrpc 2014-10-14 04:31:39 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, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2014-1406.html