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______________________________________________________________________________
                          SGI Security Advisory

         Title:    IRIX Gauntlet Vulnerabilities
        Number:    20011104-01-I
     Reference:    CERT CA-2001-25
     Reference:    CVE CVE-2000-0437
          Date:    November 30, 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 ---
- -----------------------

In the past, SGI ported the Gauntlet Firewall package to the IRIX and
sold it as an SGI-supported product.  The last version of SGI's Gauntlet
is Gauntlet 4.1 for IRIX 6.2, 6.3, 6.4, and 6.5, released in August, 1998.

NAI/PGP Security has reported remotely exploitable buffer overflows in
two Gauntlet Firewall proxies, smap/smapd and cyberdaemon, in public
forums.  Though specific exploit details have not been provided to SGI,
it is believed that Gauntlet for IRIX may be vulnerable.

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


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

A local user account on the vulnerable system is not required in order
to exploit either the cyberdaemon or the smap/smapd vulnerabilities.  Both
can be exploited remotely over an untrusted network.

The exploitable buffer overflow could lead to a root compromise.

These vulnerabilities have been reported by NAI:
cyberdaemon:  http://www.pgp.com/support/product-advisories/gauntlet.asp
smap/smapd:   http://www.pgp.com/support/product-advisories/csmap.asp

The smap/smapd vulnerability was also reported by CERT:
http://www.cert.org/advisories/CA-2001-25.html

The cyberpatrol vulnerability has been assigned a CVE:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2000-0437

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


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

SGI will NOT be issuing a patch for these vulnerabilities, as Gauntlet was
expired in November, 2001.  Sales no longer sells Gauntlet.  SGI engineering
does no further work on Gauntlet.  Customer support no longer supports
Gauntlet.  No further advisories from SGI are planned for Gauntlet 4.1 for
IRIX.  Please see http://support.sgi.com/news/support/swmodes.pdf ,
sent to customers in November, 2000 for more details.

The steps below can be used to disable the cyberpatrol and smap/smapd
daemons with Gauntlet 4.1 for IRIX, while still retaining the utility
of the other Gauntlet components:

      ================
      ****  NOTE  ****
      ================

      Disabling telnetd daemon will disable the telnet service.

     1) Become the root user on the system.

              % /bin/su -
              Password:
              #

     2) Configure IRIX so that smap will not be invoked:

              # /sbin/chkconfig smap off

     3) Invoke the Gauntlet Firewall Manager:

             Open the following URL from your WWW browser:
             http://firewall:21000/auth/gui.html

             Authenticate using your administrator account.

             Click the Gauntlet logo to load the configuration
             settings for your firewall.

     4) From within the Gauntlet Firewall Manager, select Services.

     5) Click the HTTP tab.  The HTTP window should display.

     6) Click Add.  The Add HTTP Services window should display.

     7) Make sure there is NOT a check mark in the "Use Cyber Patrol
        Filtering" box.  If there is a check mark, click to disable.

     8) Click Ok.  This should return you to the main Gauntlet
        Firewall Manager menu.

     9) Click Exit.  As you have made changes, the Gauntlet Firewall
        Manager should prompt you with several options on how you wish
        to apply the changes.  Select "Save, Apply, and Reboot".  Your
        system will reboot, with the changes in place.

Note that disabling smap/smapd will lead to running a sendmail
configuration that may not suit your needs.  At this time, it is
recommended that you run with current IRIX 6.5 overlays, which
have sendmail 8.9.3, and configure /etc/sendmail.mc as necessary
to meet those needs.


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

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

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

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:
http://freeware.sgi.com/

SGI fixes for SGI open sourced code can be found on:
http://oss.sgi.com/projects/

SGI patches and RPMs for Linux can be found at:
http://support.sgi.com/linux/ or
http://oss.sgi.com/projects/sgilinux-combined/download/security-fixes/

SGI patches for Windows NT or 2000 can be found at:
http://support.sgi.com/nt/

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:
http://support.sgi.com/colls/patches/tools/relstream/index.html

The primary SGI anonymous FTP site for security advisories and patches
is patches.sgi.com (216.32.174.211).  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 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
security-info@sgi.com.

                      ------oOo------

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 (216.32.174.211).  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:
http://www.sgi.com/support/security/

For issues with the patches on the FTP sites, email can be sent to
security-info@sgi.com.

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


                      ------oOo------

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>
end
^d

In the example above, <YourEmailAddress> is the email address that you
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control-d (^d) is used to indicate to the mail program that you are
finished composing the mail message.


                      ------oOo------

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

                      ------oOo------

If there are questions about this document, 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.


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