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______________________________________________________________________________

                          SGI Security Advisory

   Title:      IRIX 6.5.24 rpc.mountd infinte loop
   Number:     20040503-01-P
   Date:       May 17, 2004
   Reference:  SGI BUG 914056
   Fixed in:   Patch 5602 for 6.5.24m
______________________________________________________________________________

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 under certain conditions rpc.mountd goes 
into infinite loop while processing some RPC requests.

SGI has investigated the issue and recommends the following steps for
resolving this issue.  It is HIGHLY RECOMMENDED that these measures
be implemented on ALL vulnerable SGI systems.  This issue has been
corrected in future releases of IRIX.


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

To determine the version of IRIX you are running, execute the following
command:

  # /bin/uname -R

That will return a result similar to the following:

  # 6.5 6.5.21f

The first number ("6.5") is the release name, the second ("6.5.21f" in
this case) is the extended release name.  The extended release name
is the "version" we refer to throughout this document.


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

SGI has provided a series of patches for these vulnerabilities.
Our recommendation is to upgrade to IRIX 6.5.25, or install the 
appropriate patches.

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        unknown                     Note 1
IRIX 6.5.1      unknown                     Note 1
IRIX 6.5.2      unknown                     Note 1
IRIX 6.5.3      unknown                     Note 1
IRIX 6.5.4      unknown                     Note 1
IRIX 6.5.5      unknown                     Note 1
IRIX 6.5.6      unknown                     Note 1
IRIX 6.5.7      unknown                     Note 1
IRIX 6.5.8      unknown                     Note 1
IRIX 6.5.9      unknown                     Note 1
IRIX 6.5.10     unknown                     Note 1
IRIX 6.5.11     unknown                     Note 1
IRIX 6.5.12     unknown                     Note 1
IRIX 6.5.13     unknown                     Note 1
IRIX 6.5.14     unknown                     Note 1
IRIX 6.5.15     unknown                     Note 1
IRIX 6.5.16     unknown                     Note 1
IRIX 6.5.17     unknown                     Note 1
IRIX 6.5.18     unknown                     Note 1
IRIX 6.5.19     unknown                     Note 1
IRIX 6.5.20       no                        Note 2
IRIX 6.5.21       no                        Note 2 
IRIX 6.5.22       no                        Note 2
IRIX 6.5.23       no                        Note 2
IRIX 6.5.24       yes           5602        Notes 2 & 3
IRIX 6.5.25       no

   NOTES

     1) This version of the IRIX operating system is not actively supported.
        Upgrade to an actively supported IRIX operating system.
        See http://support.sgi.com/ for more information.

     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/

     3) Install the required patch(es) based on your operating release.

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

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

Filename:                 README.patch.5602
Algorithm #1 (sum -r):    51544 8 README.patch.5602
Algorithm #2 (sum):       33330 8 README.patch.5602
MD5 checksum:             F990ABB4809437A9321E16013747C5A6

Filename:                 patchSG0005602
Algorithm #1 (sum -r):    12228 1 patchSG0005602
Algorithm #2 (sum):       27872 1 patchSG0005602
MD5 checksum:             4EF421DE73035188A720D06B94270A41

Filename:                 patchSG0005602.idb
Algorithm #1 (sum -r):    55713 1 patchSG0005602.idb
Algorithm #2 (sum):       34926 1 patchSG0005602.idb
MD5 checksum:             D37383FE6EC95C3C6AC34BE6A4A989C9

Filename:                 patchSG0005602.nfs_sw
Algorithm #1 (sum -r):    54211 57 patchSG0005602.nfs_sw
Algorithm #2 (sum):       12747 57 patchSG0005602.nfs_sw
MD5 checksum:             C11B0501E607FEF19B43EC6959AFEB52


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

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

Red Hat Errata: Security Alerts, Bugfixes, and Enhancements
http://www.redhat.com/apps/support/errata/

SGI Advanced Linux Environment security updates can found on:
ftp://oss.sgi.com/projects/sgi_propack/download/

SGI patches can be found at the following patch servers:
http://support.sgi.com/

The primary SGI anonymous FTP site for security advisories and 
security patches is ftp://patches.sgi.com/support/free/security/


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

If there are questions about this document, email can be sent to
security-info@sgi.com.

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

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The primary SGI anonymous FTP site for security advisories and patches is
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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 
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For assistance obtaining or working with security patches, please
contact your SGI support provider.

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

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

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located at http://www.sgi.com/support/security/ .

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

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