Bug 66362 - bindconf can create files with bad perms for named usage
bindconf can create files with bad perms for named usage
Status: CLOSED CURRENTRELEASE
Product: Red Hat Linux
Classification: Retired
Component: bindconf (Show other bugs)
7.3
All Linux
medium Severity medium
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Assigned To: Daniel Walsh
David Lawrence
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Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2002-06-08 12:18 EDT by Justin L Werner
Modified: 2007-04-18 12:43 EDT (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2003-08-01 15:32:04 EDT
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RHEL 7.3 requirements from Atomic Host:


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Description Justin L Werner 2002-06-08 12:18:12 EDT
From Bugzilla Helper:
  User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.9) Gecko/20020513

Description of problem:
  When using 'bindconf' to create new zone files, the zone files are created
  with root:root ownership and may not be world-readable in some cases.  'named' 
  runs as 'named:named' and cannot read the new zone files, with 'permission 
  denied' messages showing up in /var/log/messages

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


How reproducible:
  Always

Steps to Reproduce:
  1. Log in as a user (not root)

  2. Set your umask to 027

  3. Invoke 'bindconf' from either the KDE or Gnome menu systems

  4. Use 'bindconf' to create a new zone file or files.

  5. Use a filemanager or shell to note the ownerships and
     permissions of the zone files in /var/named
    
  6. Restart 'named' using /sbin/init.d/named restart or
     'rndc reload' 

  7. Look at the messages in /var/log/messages


Actual Results:  
  /var/log/messages will contain something like:
  Jun  1 09:37:24 aria named[5427]: zone 0.0.127.in-addr.arpa/IN: loading master
file 0.0.127.in-addr.arpa.zone: permission denied
  Jun  1 09:37:24 aria named[5427]: zone 1.168.192.in-addr.arpa/IN: loading
master file 1.168.192.in-addr.arpa.zone: permission denied
  Jun  1 09:37:24 aria named[5427]: zone xxxx.com/IN: loading master file
xxxx.com.zone: permission denied
  Jun  1 09:37:24 aria named[5427]: zone localhost/IN: loaded serial 1
  Jun  1 09:37:24 aria named[5427]: running
  Jun  1 09:37:24 aria named: named startup succeeded


Expected Results:  
  No named 'permission denied' messages should have been output 
  to /var/log/messages.

Additional info:
  This bug can probably only occur if a user routinely keeps
  the 'other' component of his umask at 7.   I suggest adding
  a little bit of code to 'bindconf' that makes sure any 
  files it creates will be readable by 'named:named' OR
  having 'bindconf' change its umask when it executes.

  An easy workaround is to write a bindconf wrapper script
  that sets a friendlier umask before executing the
  real 'bindconf'.
Comment 1 Daniel Walsh 2002-08-06 12:47:11 EDT
Fixed in redhat-config-bind 1.7.1-7 build  Files will be owned by named.named

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