AUSCERT External Security Bulletin Redistribution

            ESB-2001.499 -- SGI Security Advisory 20011102-01-I
      Netscape Directory Server contains multiple vulnerabilities in 
                            LDAP handling code
                             27 November 2001


        AusCERT Security Bulletin Summary

Product:                Netscape/IPlanet Directory Server 4.1.4 and earlier
Vendor:                 SGI
Operating System:       IRIX
Impact:                 Execute Arbitrary Code/Commands
                        Root Compromise
Access Required:        Remote

Ref:                    AA-2001.04

- --------------------------BEGIN INCLUDED TEXT--------------------


                          SGI Security Advisory

        Title:   Netscape Directory Server contains multiple vulnerabilities
                 in LDAP handling code

        Number:  20011102-01-I
     Reference:  CERT® Advisory CA-2001-18
          Date:  November 26, 2001


SGI provides this information freely to the SGI user community for its
consideration, interpretation, implementation and use.   SGI recommends
that this information be acted upon as soon as possible.

SGI provides the information in this Security Advisory on an "AS-IS" basis
only, and disclaims all warranties with respect thereto, express, implied
or otherwise, including, without limitation, any warranty of merchantability
or fitness for a particular purpose.  In no event shall SGI be liable for
any loss of profits, loss of business, loss of data or for any indirect,
special, exemplary, incidental or consequential damages of any kind arising
from your use of, failure to use or improper use of any of the instructions
or information in this Security Advisory.

- - -----------------------
- - --- Issue Specifics ---
- - -----------------------

The CERT Coordination Center has reported that several products
including the Netscape / IPlanet Directory Server (version
4.1.4 or earlier) products contain multiple vulnerabilities in
the LDAP handling code.

In the encoding section of the PROTOS LDAPv3 test suite, these
products had an indeterminate number of failures in the group
that tests invalid BER length of length fields.

In the application section of the PROTOS LDAPv3 test suite,
these products failed four groups and had inconclusive results
for an additional five groups. The four failed groups indicate
the presence of buffer overflow vulnerabilities. For the
inconclusive groups, the product exhibited suspicious behavior
while testing for format string vulnerabilities.

Please read the CERT advisory and info on the PROTOS LDAPv3
test suite at:


SGI has investigated the issue and recommends the following steps for
neutralizing the exposure.  It is HIGHLY RECOMMENDED that these measures
be implemented on ALL vulnerable SGI systems.

- - --------------
- - --- Impact ---
- - --------------

SGI sold IRIX Netscape Directory Server versions 1.0, 1.02, 3.0,
3.11, and 4.1.  All of those versions are subject to the
vulnerabilities outlined in this bulletin.  None of these
products are currently available from SGI, and all have been
retired and are no longer supported by SGI.

One or more of these vulnerabilities allow a remote attacker to
execute arbitrary code with the privileges of the Directory
Server. The server typically runs with root privileges. At
least one of these vulnerabilities has been successfully
exploited in a laboratory environment under Windows NT 4.0, but
they may affect other platforms as well.

A local user account on the vulnerable system is not required in order
to exploit these vulnerabilities.

CERT/CC reported the vulnerabilities:

These vulnerabilities have been publicly discussed in Usenet
newsgroups and security mailing lists.

- - ----------------
- - --- Solution ---
- - ----------------

These products have been retired, and SGI will not be providing
a patch for these vulnerabilities.  SGI's recommendation is to
uninstall the product.

To see the current support status of any SGI product, see:

Support Mode Descriptions

IRIX Product Support Policy

- - -------------------
- - --- Information ---
- - -------------------

SGI Security Advisories can be found at:
http://www.sgi.com/support/security/ and

SGI Security Patches can be found at:
http://www.sgi.com/support/security/ and

SGI patches for IRIX can be found at the following patch servers:
http://support.sgi.com/irix/ and ftp://patches.sgi.com/

SGI freeware updates for IRIX can be found at:

SGI fixes for SGI open sourced code can be found on:

SGI patches and RPMs for Linux can be found at:
http://support.sgi.com/linux/ or

SGI patches for Windows NT or 2000 can be found at:

IRIX 5.2-6.4 Recommended/Required Patch Sets can be found at:
http://support.sgi.com/irix/ and ftp://patches.sgi.com/support/patchset/

IRIX 6.5 Maintenance Release Streams can be found at:

IRIX 6.5 Software Update CDs can be obtained from:

The primary SGI anonymous FTP site for security advisories and patches
is patches.sgi.com (  Security advisories and patches
are located under the URL ftp://patches.sgi.com/support/free/security/

For security and patch management reasons, ftp.sgi.com (mirrors
patches.sgi.com security FTP repository) lags behind and does not
do a real-time update.

- - ------------------------
- - --- Acknowledgments ----
- - ------------------------

SGI wishes to thank the CERT Coordination Center, PROTOS team
from Finland, and the users of the Internet Community at large
for their assistance in this matter.

- - -----------------------------------------
- - --- SGI Security Information/Contacts ---
- - -----------------------------------------

If there are questions about this document, email can be sent to


SGI provides security information and patches for use by the entire SGI
community.  This information is freely available to any person needing
the information and is available via anonymous FTP and the Web.

The primary SGI anonymous FTP site for security advisories and patches
is patches.sgi.com (  Security advisories and patches
are located under the URL ftp://patches.sgi.com/support/free/security/

The SGI Security Headquarters Web page is accessible at the URL:

For issues with the patches on the FTP sites, email can be sent to

For assistance obtaining or working with security patches, please
contact your SGI support provider.


SGI provides a free security mailing list service called wiretap and
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SGI Security Advisories when they are released. Subscribing to the mailing
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SGI provides a comprehensive customer World Wide Web site. This site is
located at http://www.sgi.com/support/security/ .


If there are general security questions on SGI systems, email can be
sent to security-info@sgi.com.

For reporting *NEW* SGI security issues, email can be sent to
security-alert@sgi.com or contact your SGI support provider.  A
support contract is not required for submitting a security report.

      This information is provided freely to all interested parties
      and may be redistributed provided that it is not altered in any
      way, SGI is appropriately credited and the document retains and
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