AUSCERT External Security Bulletin Redistribution
           ESB-2000.056 -- SGI Security Advisory 20000302-01-P3865
                        sendmail 8.9.3 for IRIX 6.5.7
                                23 March 2000


Silicon Graphics Inc. has released the following advisory concerning
vulnerabilities in the implementation of sendmail 8.9.3 on IRIX 6.5.7.
This vulnerability may allow remote users to relay unsolicited email such
as SPAM, on affected IRIX systems.

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


                          SGI Security Advisory

        Title:   sendmail 8.9.3 for IRIX 6.5.7
        Number:  20000302-01-P3865
        Date:    March 22, 2000

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.

- - ---------------
- - ---- Update ---
- - ---------------

As part of on going security efforts, SGI has released sendmail 8.9.3
as patch 3865 for IRIX 6.5.7 release streams.

This new patch provides an SGI port of the sendmail 8.9.3 distribution
for IRIX 6.5.7 with SGI sendmail modifications open-sourced.

Both source code for sendmail 8.9.3 and the SGI modifications to extend
sendmail capabilities on SGI systems are included with patch 3865.

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

The sendmail distribution from http://www.sendmail.org/ provides
a means to deliver and receive network mail.

Older versions of sendmail were vulnerable to several mail relay
vulnerabilities which allowed it to relay unsolicited email such as SPAM.

sendmail 8.9.3 includes improved anti-spam and anti-relay capabilities
to minimize this issue.

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 ---
- - --------------

sendmail is installed by default on all releases of IRIX.

A local user account is not needed to exploit the sendmail's
mail relay capabilities to relay unsolicited mail such as SPAM.

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

- - --------------------------
- - --- Temporary Solution ---
- - --------------------------

There are no current plans to release a sendmail 8.9.3 patch for older
releases of IRIX.

Source code to sendmail 8.9.3 can be obtained from
http://www.sendmail.org/ and compiles under older releases of IRIX.

Source code to sendmail 8.9.3 and SGI extensions can be obtained from

On older releases of IRIX, the file sendmail.8.9.3.tar.gz can be
unpacked using GNU gzip tools found on http://freeware.sgi.com/

Once sendmail.8.9.3.tar.gz has been unpacked, SGI patches to
sendmail 8.9.3 can be found in a separate directory called patches.

SGI patches to sendmail 8.9.3 have been (or will be) submitted to
sendmail.org for inclusion in the base source distribution.

                 ##### Source File Checksums ####

Filename:                 sendmail.8.9.3.tar.gz
Algorithm #1 (sum -r):    42616 2223 sendmail.8.9.3.tar.gz
Algorithm #2 (sum):       42508 2223 sendmail.8.9.3.tar.gz
MD5 checksum:             3CD39FE362E43B5CCBE230050E6D7500

Compiling sendmail 8.9.3 for IRIX is not supported by SGI.
The SGI supported solution for sendmail 8.9.3 is patch 3865
for IRIX 6.5.7.

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

Install patch 3865 for IRIX 6.5.7 release streams.
Patch 3865 will only install on IRIX 6.5.7 release streams.

Patch 3865 includes source code to sendmail 8.9.3 as well as SGI

If you have not received an IRIX 6.5.7 CD for IRIX 6.5, contact your
SGI Support Provider or download the IRIX 6.5.7 Maintenance Release
Stream from:

Information about installing IRIX 6.5.7 can be found at:

There are no current plans to release a sendmail 8.9.3 patch for
older releases of IRIX.

Patches are available via anonymous FTP and your service/support

The primary SGI anonymous FTP site for security information and patches
is sgigate.sgi.com ( Security information and patches can
be found in the ~ftp/security and ~ftp/patches directories, respectively.

For security and patch management reasons, ftp.sgi.com (mirror of sgigate)
lags behind and does not do a real-time update of ~ftp/security and

Patches are also available from http://support.sgi.com/

                ##### Patch File Checksums ####

The actual patch will be a tar file containing the following files:

Filename:                 README.patch.3865
Algorithm #1 (sum -r):    12478 8 README.patch.3865
Algorithm #2 (sum):       49211 8 README.patch.3865
MD5 checksum:             D42136C4CB686E77C390DA080CC4930D

Filename:                 patchSG0003865
Algorithm #1 (sum -r):    57935 4 patchSG0003865
Algorithm #2 (sum):       51672 4 patchSG0003865
MD5 checksum:             0921BC13EC9C245410310DB8DDDE4245

Filename:                 patchSG0003865.eoe_books
Algorithm #1 (sum -r):    38787 1866 patchSG0003865.eoe_books
Algorithm #2 (sum):       31827 1866 patchSG0003865.eoe_books
MD5 checksum:             6E94D750F2D3D698D89F1B565A2C5EF1

Filename:                 patchSG0003865.eoe_man
Algorithm #1 (sum -r):    09053 37 patchSG0003865.eoe_man
Algorithm #2 (sum):       16970 37 patchSG0003865.eoe_man
MD5 checksum:             B78B5F4FF7CE8643D51B81155C4053E2

Filename:                 patchSG0003865.eoe_sw
Algorithm #1 (sum -r):    60845 3136 patchSG0003865.eoe_sw
Algorithm #2 (sum):       13461 3136 patchSG0003865.eoe_sw
MD5 checksum:             B9147670C43E2AF6392508E223168096

Filename:                 patchSG0003865.idb
Algorithm #1 (sum -r):    50971 41 patchSG0003865.idb
Algorithm #2 (sum):       16841 41 patchSG0003865.idb
MD5 checksum:             EAE209D64235B47310FF982856309BEB

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

Silicon Graphics wishes to thank sendmail.org 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 information and patches
is sgigate.sgi.com (  Security information and patches
are located under the directories ~ftp/security and ~ftp/patches,
respectively. The SGI Security Headquarters Web page is accessible at
the URL http://www.sgi.com/support/security/ .

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
encourages interested parties to self-subscribe to receive (via email) all
SGI Security Advisories when they are released. Subscribing to the mailing
list can be done via the Web http://www.sgi.com/support/security/wiretap.html
or by sending email to SGI as outlined below.

% mail wiretap-request@sgi.com
subscribe wiretap <YourEmailAddress>

In the example above, <YourEmailAddress> is the email address that you
wish the mailing list information sent to.  The word end must be on a
separate line to indicate the end of the body of the message. The
control-d (^d) is used to indicate to the mail program that you are
finished composing the mail message.


SGI provides a comprehensive customer World Wide Web site. This site is
located at http://www.sgi.com/support/security/ .


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
      includes its valid PGP signature.

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