RHN Errata Alert: nss_ldap bug fix update

[Red Hat Network Alert <dev-null@rhn.redhat.com>]

Red Hat Network has determined that the following advisory is applicable to
one or more of the systems you have registered:

Complete information about this errata can be found at the following location:
     https://rhn.redhat.com/rhn/errata/details/Details.do?eid=9280

Bug Fix Advisory - RHBA-2009:1527-1
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Summary:
nss_ldap bug fix update

An updated nss_ldap package is now available for Red Hat Enterprise Linux 5.

Description:
The nss_ldap package includes two LDAP access clients: nss_ldap and
pam_ldap. nss_ldap is a plugin for the standard C library which allows
applications to look up information about users and groups using a
directory server. The pam_ldap module is a Pluggable Authentication Module
(PAM) which provides for authentication, authorization and password
changing against LDAP servers.

This update fixes the following bug in the nss_ldap module:

* a NULL value was incorrectly assigned to an ldap_parse_result argument if
the bind operation timed out. Consequently, if the nss_ldap module was
configured to encrypt traffic to the directory server using the "ssl
start_tls" option and TLS negotiation took longer than the "bind_timelimit"
value set in /etc/ldap.conf, the client module would crash with an
Assertion error. With this update, the ldap_parse_result argument is not
set to NULL if the bind operation times out and the Assertion error no
longer occurs. (BZ#529376)

Note: The default bind_timelimit is 30 seconds and this bug did not
normally trigger unless the value was set to less than this default.
Further, it was possible to workaround this issue by increasing the
bind_timelimit (for example, to 60 seconds). This only masked the
underlying issue, however.

All nss_ldap users are advised to upgrade to this updated package, which
resolves this issue.
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Taking Action
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You may address the issues outlined in this advisory in two ways:

     - select your server name by clicking on its name from the list
       available at the following location, and then schedule an
       errata update for it:
           https://rhn.redhat.com/rhn/systems/SystemList.do

     - run the Update Agent on each affected server.


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Affected Systems List
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This Errata Advisory may apply to the systems listed below. If you know that
this errata does not apply to a system listed, it might be possible that the
package profile for that server is out of date. In that case you should refresh 
the system's package profile by running *one* of the following commands as root 
on that system:

 * 'up2date -p' (on Enterprise Linux systems prior to RHEL5)
 * 'rhn-profile-sync' (on Enterprise Linux 5 or later) 

There are 22 affected systems registered in 'Your RHN' (only systems for
which you have explicitly enabled Errata Alerts are shown).

Release   Arch       Profile Name
--------  --------   ------------


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