RHSA-2002:312 - Security Advisory

Topic

Updated OpenLDAP packages are available which fix a number of local and
remote buffer overflows in libldap as well as the slapd and slurpd daemons.
Additionally, potential issues stemming from using user-specified LDAP
configuration files have been addressed.

[Updated 06 Feb 2003]
Added fixed packages for Red Hat Linux Advanced Workstation 2.1

[Updated 13 Aug 2003]
Added openldap12 packages for Red Hat Linux Advanced Server 2.1
and Advanced Workstation 2.1 that were originally left out of this errata.

Description

OpenLDAP is a suite of LDAP (Lightweight Directory Access Protocol)
applications and development tools. LDAP is a set of protocols for
accessing directory services. In an audit of OpenLDAP by SuSE, a number of
potential security issues were found.

The following is a list of these issues:

When reading configuration files, libldap reads the current user's .ldaprc
file even in applications being run with elevated privileges.

Slurpd would overflow an internal buffer if the command-line argument used
with the -t or -r flags is too long, or if the name of a file for which it
attempted to create an advisory lock is too long.

When parsing filters, the getfilter family of functions from libldap can
overflow an internal buffer by supplying a carefully crafted
ldapfilter.conf file.

When processing LDAP entry display templates, libldap can overflow an
internal buffer by supplying a carefully crafted ldaptemplates.conf file.

When parsing an access control list, slapd can overflow an internal buffer.

When constructing the name of the file used for logging rejected
replication requests, slapd overflows an internal buffer if the size
of the generated name is too large. It can also destroy the contents of any
file owned by the user 'ldap' due to a race condition in the subsequent
creation of the log file.

All of these potential security issues are corrected by the packages
contained within this erratum.

Red Hat Linux Advanced Server users who use LDAP are advised to
install the updated OpenLDAP packages contained within this erratum.

Solution

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

Please note that this update is available via Red Hat Network. To use Red
Hat Network, launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

Affected Products

• Red Hat Enterprise Linux Server 2 ia64
• Red Hat Enterprise Linux Workstation 2 ia64

Fixes

CVEs

• CVE-2002-1508
• CVE-2002-1379
• CVE-2002-1378

References

(none)