IRIX mountd Buffer Overflow Vulnerability

-----BEGIN PGP SIGNED MESSAGE-----

===========================================================================
            AUSCERT External Security Bulletin Redistribution
                                    
            ESB-98.166 -- SGI Security Advisory 19981006-01-I
                IRIX mountd Buffer Overflow Vulnerability
                                    
                             27 October 1998

===========================================================================

Silicon Graphics Inc. has released the following advisory addressing a
buffer overflow vulnerability in mountd reported in CERT Advisory CA-98.12.
All versions of IRIX, Unicos and Unicos/mk are not subject to this
vulnerability and no further action is required.

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

- -----BEGIN PGP SIGNED MESSAGE-----

______________________________________________________________________________
                Silicon Graphics Inc. Security Advisory

        Title:   mountd Buffer Overflow Vulnerability
        Title:   CERT* Advisory CA-98.12
        Number:  19981006-01-I
        Date:    October 26, 1998
______________________________________________________________________________

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

Silicon Graphics 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
Silicon Graphics 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.
______________________________________________________________________________


As a followup to CERT(sm) Advisory CA-98.12 "Remotely Exploitable
Buffer Overflow Vulnerability in mountd", SGI has investigated this
issue and provides the following information.


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

The mountd program is a server process that coordinates filesystem
mount requests.

A buffer overflow vulnerability has been discovered in the mountd
program that can allow root access according to CERT(sm) Advisory
CA-98.12.

Silicon Graphics Inc. has investigated the issue and finds all
versions of IRIX, Unicos and Unicos/mk are not vulnerable to this
issue and no further action is required.


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


Silicon Graphics wishes to thank the CERT Coordination Center and the users
of the Internet Community at large for their assistance in this matter.



- - -----------------------------------------------------------
- - --- Silicon Graphics Inc. Security Information/Contacts ---
- - -----------------------------------------------------------

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

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

Silicon Graphics 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 (204.94.209.1).  Security information and patches
are located under the directories ~ftp/security and ~ftp/patches,
respectively. The Silicon Graphics Security Headquarters Web page is
accessible at the URL http://www.sgi.com/Support/security/security.html.

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

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

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

Silicon Graphics 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
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.


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

Silicon Graphics provides a comprehensive customer World Wide Web site.
This site is located at http://www.sgi.com/Support/security/security.html.

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

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, Silicon
  Graphics is appropriately credited and the document retains and
  includes its valid PGP signature.


- -----BEGIN PGP SIGNATURE-----
Version: 2.6.2

iQCVAwUBNjT7lLQ4cFApAP75AQE9ugQAhu/xqzO9n30GuAMos6wzT/33YbUeBKy7
5PFpan5hMeTCyjJoGPYTJckIttIiuPa21V2n28NEkfd2eKFV4yYt++fe6bBzfKij
Ub7S/Ve9YgDgTxbivOJTF+y3vfCdyTB0DE0uW0ZyqQsE6j4JmECRHiFKy6VJo5Ky
CmlFo/Zg3Nc=
=EsF5
- -----END PGP SIGNATURE-----

- ---------------------------END INCLUDED TEXT--------------------

This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content.  The decision to use any or all of this information is
the responsibility of each user or organisation, and should be done so in
accordance with site policies and procedures.

NOTE: This is only the original release of the security bulletin.  It will
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the original authors to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/Information/advisories.html

If you believe that your system has been compromised, contact AusCERT or
your representative in FIRST (Forum of Incident Response and Security
Teams).

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for emergencies.

-----BEGIN PGP SIGNATURE-----
Version: 2.6.3i
Charset: noconv
Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key

iQCVAwUBNkLIgyh9+71yA2DNAQGGIgP/XFRwSJWzQsyQLSzi6N+kh/uKuINpb5mR
raF0SOl7TzkEnqCXOBv2+tFL0AZQKozHd8Hv0FO5cXQcCbt7f5hg8dyJA43JXv9Q
6k7rMeWJ+mvaYfy8i9ichagoODuGuPyh1AjDJUxzAMZV66rj3JB9LndHKWWnqLhS
YInrl+2uPPU=
=BviE
-----END PGP SIGNATURE-----