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Bug Fix Advisory nss_ldap bug fix update

Advisory: RHBA-2009:0241-4
Type: Bug Fix Advisory
Severity: N/A
Issued on: 2009-01-20
Last updated on: 2009-01-20
Affected Products: Red Hat Enterprise Linux (v. 5 server)
Red Hat Enterprise Linux Desktop (v. 5 client)

Details

Updated nss_ldap packages that resolve several issues are now available.

The nss_ldap package contains the nss_ldap and pam_ldap modules. The
nss_ldap module allows applications to use a directory server as a primary
source for information about users and groups. The pam_ldap module allows
PAM-aware applications to use a directory server to verify user passwords.

These updated nss_ldap packages provide fixes for the following bugs:

* by default, the nss_ldap module keeps connections to a server open
between uses. In order to avoid problems that would occur if two client
processes attempted to issue queries over the same connection to a server,
the module installs a fork handler to allow it to close the client-side of
any open connection for a newly-created child process. This method
frequently caused a SIGPIPE signal to be received by the child process,
which, in many cases, caused the child process to exit. This issue may have
caused broken pipe errors, cron jobs not to run, remote session hangs,
scripts not running as expected and commands such as "su" to fail. These
updated packages contain a backported fix which causes the nss_ldap module
to ignore the SIGPIPE signal during the fork() call, thus resolving the
problem.

* when an application called one of the setnetgrent(), getnetgrent() or
endnetgrent() functions to begin enumerating the members of a netgroup, the
nss_ldap module returned a successful exit status, even if there was no
such netgroup. In these updated packages, the functions which enumerate the
members of a netgroup all return an return an exit status of NSS_NOTFOUND
when no such netgroup exists, thus resolving the issue.

All users of nss_ldap are advised to upgrade to these updated packages,
which resolve these issues.


Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

Updated packages

Red Hat Enterprise Linux (v. 5 server)

SRPMS:
nss_ldap-253-17.el5.src.rpm
File outdated by:  RHBA-2013:0251
    MD5: 0d5a65a474f064a80ae4b2243f6a38d9
 
IA-32:
nss_ldap-253-17.el5.i386.rpm
File outdated by:  RHBA-2013:0251
    MD5: bf3fb868913fbc2f3baea5bbe7b13949
 
IA-64:
nss_ldap-253-17.el5.i386.rpm
File outdated by:  RHBA-2013:0251
    MD5: bf3fb868913fbc2f3baea5bbe7b13949
nss_ldap-253-17.el5.ia64.rpm
File outdated by:  RHBA-2013:0251
    MD5: 11ff5b029aa7f3b999703e28450b7b33
 
PPC:
nss_ldap-253-17.el5.ppc.rpm
File outdated by:  RHBA-2013:0251
    MD5: cbcb70f7dea92c61cbb4ee680dbd058c
nss_ldap-253-17.el5.ppc64.rpm
File outdated by:  RHBA-2013:0251
    MD5: 776b1cc8867213e043e01844665051c0
 
s390x:
nss_ldap-253-17.el5.s390.rpm
File outdated by:  RHBA-2013:0251
    MD5: 19dc725d26add9fc68fe2b86002a5dca
nss_ldap-253-17.el5.s390x.rpm
File outdated by:  RHBA-2013:0251
    MD5: 7554dbb26c1adba17b8a414ff7a81f90
 
x86_64:
nss_ldap-253-17.el5.i386.rpm
File outdated by:  RHBA-2013:0251
    MD5: bf3fb868913fbc2f3baea5bbe7b13949
nss_ldap-253-17.el5.x86_64.rpm
File outdated by:  RHBA-2013:0251
    MD5: 732805fc36f479aa12755aa810270c5c
 
Red Hat Enterprise Linux Desktop (v. 5 client)

SRPMS:
nss_ldap-253-17.el5.src.rpm
File outdated by:  RHBA-2013:0251
    MD5: 0d5a65a474f064a80ae4b2243f6a38d9
 
IA-32:
nss_ldap-253-17.el5.i386.rpm
File outdated by:  RHBA-2013:0251
    MD5: bf3fb868913fbc2f3baea5bbe7b13949
 
x86_64:
nss_ldap-253-17.el5.i386.rpm
File outdated by:  RHBA-2013:0251
    MD5: bf3fb868913fbc2f3baea5bbe7b13949
nss_ldap-253-17.el5.x86_64.rpm
File outdated by:  RHBA-2013:0251
    MD5: 732805fc36f479aa12755aa810270c5c
 
(The unlinked packages above are only available from the Red Hat Network)

Bugs fixed (see bugzilla for more information)

448014 - bash command substitution broken with LDAP users
455285 - need to build pam_ldap with -fno-strict-aliasing
466526 - If GDM cannot contact an LDAP server as per system-config-authentication, it takes _FOREVER_ to give you the login screen



These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:
https://www.redhat.com/security/team/key/#package

The Red Hat security contact is secalert@redhat.com. More contact details at http://www.redhat.com/security/team/contact/