AUSCERT External Security Bulletin Redistribution

            ESB-2002.163 -- SGI Security Advisory 20020201-01-P
                           SNMP Vulnerabilities
                               5 April 2002


        AusCERT Security Bulletin Summary

Product:                Simple Network Management Protocol (SNMP)
Vendor:                 SGI
Impact:                 Denial of Service
                        Execute Arbitrary Code/Commands
Access Required:        Remote

Ref:                    AL-2002.02

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


                           SGI Security Advisory

         Title:  SNMP Vulnerabilities
        Number:  20020201-01-P
          Date:  April 3, 2002
     Reference:  CERT CA-2002-03
     Reference:  CVE CAN-2002-0013
     Reference:  CVE CAN-2002-0017

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

It has been reported that the IRIX /usr/etc/snmpd, /usr/etc/peer_encaps, and
/usr/etc/peer_snmpd, when used with a public read-only community, can be
made to dump core when running the publicly available "PROTOS Test-Suite:
c06-snmpv1" regression tests, see:


A buffer overflow in snmpd was also reported by Kris Hunt of ISS:

SGI is also investigating the non-base products that may have an SNMP

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.

These issues have been corrected in future releases of IRIX.

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

The above snmp daemons are not installed by default, they are part of the
eoe.sw.netman package and can be optionally installed.

In order to check to see if this package is installed, run the following

  # versions | grep netman

If the output of the above command looks like the following, then the
daemons are installed and the system is vulnerable:

  I  eoe.sw.netman        03/14/2001  Network Management SNMP Support

These vulnerabilities may be exploited by a remote user, and no local
account is required.

This issue was reported on CERT® Advisory CA-2002-03 Multiple Vulnerabilities
in Many Implementations of the Simple Network Management Protocol (SNMP):

The PROTOS vulnerability was assigned the following CVE:

The ISS SNMP buffer overflow was assigned the following CVE:

- - ----------------------------
- - --- Temporary Workaround ---
- - ----------------------------

The only workaround for these problems is to uninstall the product using the
following commands:

  # versions remove eoe.sw.netman

SGI recommends either upgrading to IRIX 6.5.16 when it is released, or
installing the appropriate patch from the listing below.

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

SGI has provided a series of patches for these vulnerabilities. Our
recommendation is to upgrade to IRIX 6.5.16 when available, or install the
appropriate patch.

   OS Version     Vulnerable?     Patch #      Other Actions
   ----------     -----------     -------      -------------
   IRIX 3.x        unknown                     Note 1
   IRIX 4.x        unknown                     Note 1
   IRIX 5.x        unknown                     Note 1
   IRIX 6.0.x      unknown                     Note 1
   IRIX 6.1        unknown                     Note 1
   IRIX 6.2        unknown                     Note 1
   IRIX 6.3        unknown                     Note 1
   IRIX 6.4        unknown                     Note 1
   IRIX 6.5          yes          4574         Notes 2 & 3
   IRIX 6.5.1        yes          4574         Notes 2 & 3
   IRIX 6.5.2        yes          4574         Notes 2 & 3
   IRIX 6.5.3        yes          4574         Notes 2 & 3
   IRIX 6.5.4        yes          4574         Notes 2 & 3
   IRIX 6.5.5        yes          4574         Notes 2 & 3
   IRIX 6.5.6        yes          4574         Notes 2 & 3
   IRIX 6.5.7        yes          4574         Notes 2 & 3
   IRIX 6.5.8        yes          4574         Notes 2 & 3
   IRIX 6.5.9        yes          4574         Notes 2 & 3
   IRIX 6.5.10       yes          4574         Notes 2 & 3
   IRIX 6.5.11       yes          4574         Notes 2 & 3
   IRIX 6.5.12       yes          4574         Notes 2 & 3
   IRIX 6.5.13       yes          4574         Notes 2 & 3
   IRIX 6.5.14       yes          4574         Notes 2 & 3
   IRIX 6.5.15       yes          4574         Notes 2 & 3


     1) This version of the IRIX operating has been retired. Upgrade to an
        actively supported IRIX operating system.  See
        http://support.sgi.com/irix/news/index.html#policy for more

     2) If you have not received an IRIX 6.5.X CD for IRIX 6.5, contact your
        SGI Support Provider or URL: http://support.sgi.com/irix/swupdates/

     3) SGI recommends upgrading to IRIX 6.5.16m or 6.5.16f. Patch 4574 can
        be found on ftp://patches.sgi.com/support/free/security/patches/ or

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

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

Filename:                 README.patch.4574
Algorithm #1 (sum -r):    32921 8 README.patch.4574
Algorithm #2 (sum):       33173 8 README.patch.4574
MD5 checksum:             ABACE618AEEB06053114146999153104

Filename:                 patchSG0004574
Algorithm #1 (sum -r):    23776 2 patchSG0004574
Algorithm #2 (sum):       37321 2 patchSG0004574
MD5 checksum:             7F3BAE0B10561D2F7B1D4B6351D1A171

Filename:                 patchSG0004574.eoe_sw
Algorithm #1 (sum -r):    59133 996 patchSG0004574.eoe_sw
Algorithm #2 (sum):       25189 996 patchSG0004574.eoe_sw
MD5 checksum:             ECDEF7ABBC54F5C85A0B17C5170D4956

Filename:                 patchSG0004574.idb
Algorithm #1 (sum -r):    19557 3 patchSG0004574.idb
Algorithm #2 (sum):       25632 3 patchSG0004574.idb
MD5 checksum:             32F03B249CC8756B0897F22F7FD9A8EB

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

SGI wishes to thank ISS, FIRST and CERT for their assistance in this matter.

- - -------------
- - --- Links ---
- - -------------

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.

- - -----------------------------------------
- - --- 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
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
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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/ .


If there are general security questions on SGI systems, email can be sent to

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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