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Bug 912851 - Authconfig might pick up the wrong LDAP BASE from /etc/nslcd.conf when using multiple base for NSLCD
Summary: Authconfig might pick up the wrong LDAP BASE from /etc/nslcd.conf when using ...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: authconfig
Version: 6.3
Hardware: All
OS: Linux
medium
high
Target Milestone: rc
: ---
Assignee: Tomas Mraz
QA Contact: David Spurek
URL:
Whiteboard:
Depends On:
Blocks: 994246 1056252 1087733
TreeView+ depends on / blocked
 
Reported: 2013-02-19 20:44 UTC by Francesco Ciocchetti
Modified: 2018-12-09 16:56 UTC (History)
7 users (show)

Fixed In Version: authconfig-6.1.12-14.el6
Doc Type: Bug Fix
Doc Text:
Cause: Authconfig did not properly read the ldap base from nslcd.conf if there were multiple specific ldap bases specified in the file. Consequence: The value of ldap base read from nslcd.conf was incorrect. Fix: Authconfig now ignores the specific ldap bases and reads and overwrites only the general ldap base value. Result: LDAP client is not misconfigured anymore.
Clone Of:
: 1087733 (view as bug list)
Environment:
Last Closed: 2014-10-14 07:44:29 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2014:1558 0 normal SHIPPED_LIVE authconfig bug fix and enhancement update 2014-10-14 01:27:53 UTC

Description Francesco Ciocchetti 2013-02-19 20:44:04 UTC 
Description of problem:

When Authconfig --update is run , if no ldap base is passed as an argument, it will parse the following files , in this order, to find the BASE for ldap queries and it will replace it in all the related configuration files (like /etc/pam_ldap.conf and all the others) 

The list and order of files (as defined in /usr/share/authconfig/authinfo.py starting at line 1444 ) 

CFG_NSSLDAP (I don't have this) 
CFG_NSLCD (first to match , it can contain MULTIPLE base )
CFG_PAMLDAP (Safe to use, it can only contain one base)
CFG_LDAP (Empty in my personal case, still the last resort )

When using Multiple base configured in /etc/nslcd.conf 

 # The distinguished name of the search base.
 base o=MyCompany
 # Customize certain database lookups.
 base   group  ou=Groups,o=MyCompany 
 base   passwd ou=People,o=MyCompany
 base   shadow ou=People,o=MyCompany

authinfo will iterate over the lines saving the LAST match as a base and replacing it in every other ldap file.

This base that is matchine is not going to work anywhere other then in nslcd.conf 

What happen after running authconfig is that every BASE in every of my ldap file get replaced with

 base   shadow ou=People,o=MyCompany

completely breaking LDAP lookups.

Version-Release number of selected component (if applicable):
Centos 6.3


How reproducible:


Steps to Reproduce:
1. Add multiple specific base to /etc/nslcd.conf - 
2. run authconfig --update 
3. whatch your ldap lookup fail
  
Actual results:


Expected results:
 
 Matching the CORRECT base 


Additional info:

 I personally "Workedaround" the problem by changing the order in which files get evaluated by authinfo.py . I am using CFG_PAMLDAP as second match instead of CFG_NSLCD and everything works as expected.

probably just adding a regex match to the base would be enough , and cleaner.
Comment 2 RHEL Program Management 2013-02-26 06:47:15 UTC 
This request was not resolved in time for the current release.
Red Hat invites you to ask your support representative to
propose this request, if still desired, for consideration in
the next release of Red Hat Enterprise Linux.
Comment 3 RHEL Program Management 2013-10-13 23:55:37 UTC 
This request was evaluated by Red Hat Product Management for
inclusion in the current release of Red Hat Enterprise Linux.
Because the affected component is not scheduled to be updated
in the current release, Red Hat is unable to address this
request at this time.

Red Hat invites you to ask your support representative to
propose this request, if appropriate, in the next release of
Red Hat Enterprise Linux.
Comment 10 errata-xmlrpc 2014-10-14 07:44:29 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-2014-1558.html
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