Synopsis:	Moderate: openldap security and bug fix update
Issue date:	2010-03-30
CVE Names:	CVE-2009-3767

A flaw was found in the way OpenLDAP handled NUL characters in the
CommonName field of X.509 certificates. An attacker able to get a
carefully-crafted certificate signed by a trusted Certificate Authority
could trick applications using OpenLDAP libraries into accepting it by
mistake, allowing the attacker to perform a man-in-the-middle attack.
(CVE-2009-3767)

This update also fixes the following bugs:

* the ldap init script did not provide a way to alter system limits for 
the slapd daemon. A variable is now available in "/etc/sysconfig/ldap" 
for this option. (BZ#527313)

* applications that use the OpenLDAP libraries to contact a Microsoft
Active Directory server could crash when a large number of network
interfaces existed. This update implements locks in the OpenLDAP library
code to resolve this issue. (BZ#510522)

* when slapd was configured to allow client certificates, approximately 
90% of connections froze because of a large CA certificate file and 
slapd not checking the success of the SSL handshake. (BZ#509230)

* the OpenLDAP server would freeze for unknown reasons under high load.
These packages add support for accepting incoming connections by new
threads, resolving the issue. (BZ#507276)

* the compat-openldap libraries did not list dependencies on other
libraries, causing programs that did not specifically specify the 
libraries to fail. Detection of the Application Binary Interface (ABI) 
in use on 64-bit systems has been added with this update. (BZ#503734)

* the OpenLDAP libraries caused applications to crash due to an 
unprocessed network timeout. A timeval of -1 is now passed when NULL is 
passed to LDAP. (BZ#495701)

* slapd could crash on a server under heavy load when using rwm overlay,
caused by freeing non-allocated memory during operation cleanup.
(BZ#495628)

* the ldap init script made a temporary script in "/tmp/" and attempted 
to execute it. Problems arose when "/tmp/" was mounted with the noexec 
option. The temporary script is no longer created. (BZ#483356)

* the ldap init script always started slapd listening on ldap:/// even 
if instructed to listen only on ldaps:///. By correcting the init 
script, a user can now select which ports slapd should listen on. 
(BZ#481003)

* the slapd manual page did not mention the supported options -V and -o.
(BZ#468206)

* slapd.conf had a commented-out option to load the syncprov.la module.
Once un-commented, slapd crashed at start-up because the module had 
already been statically linked to OpenLDAP. This update removes 
"moduleload syncprov.la" from slapd.conf, which resolves this issue. 
(BZ#466937)

* the migrate_automount.pl script produced output that was unsupported 
by autofs. This is corrected by updating the output LDIF format for 
automount records. (BZ#460331)

* the ldap init script uses the TERM signal followed by the KILL signal
when shutting down slapd. Minimal delay between the two signals could 
cause the LDAP database to become corrupted if it had not finished 
saving its state. A delay between the signals has been added via the 
"STOP_DELAY" option in "/etc/sysconfig/ldap". (BZ#452064)

* the migrate_passwd.pl migration script had a problem when number 
fields contained only a zero. Such fields were considered to be empty, 
leading to the attribute not being set in the LDIF output. The condition 
in dump_shadow_attributes has been corrected to allow for the attributes 
to contain only a zero. (BZ#113857)

* the migrate_base.pl migration script did not handle third level 
domains correctly, creating a second level domain that could not be held 
by a database with a three level base. This is now allowed by modifying 
the migrate_base.pl script to generate only one domain. (BZ#104585)


SL 5.x

     SRPMS:
openldap-2.3.43-12.el5.src.rpm
     i386:
compat-openldap-2.3.43_2.2.29-12.el5.i386.rpm
openldap-2.3.43-12.el5.i386.rpm
openldap-clients-2.3.43-12.el5.i386.rpm
openldap-devel-2.3.43-12.el5.i386.rpm
openldap-servers-2.3.43-12.el5.i386.rpm
openldap-servers-overlays-2.3.43-12.el5.i386.rpm
openldap-servers-sql-2.3.43-12.el5.i386.rpm
     x86_64:
compat-openldap-2.3.43_2.2.29-12.el5.i386.rpm
compat-openldap-2.3.43_2.2.29-12.el5.x86_64.rpm
openldap-2.3.43-12.el5.i386.rpm
openldap-2.3.43-12.el5.x86_64.rpm
openldap-clients-2.3.43-12.el5.x86_64.rpm
openldap-devel-2.3.43-12.el5.i386.rpm
openldap-devel-2.3.43-12.el5.x86_64.rpm
openldap-servers-2.3.43-12.el5.x86_64.rpm
openldap-servers-overlays-2.3.43-12.el5.x86_64.rpm
openldap-servers-sql-2.3.43-12.el5.x86_64.rpm

-Connie Sieh
-Troy Dawson