InPerson Vulnerabilities

[SGI Security Coordinator <agent99 () CSD SGI COM>]

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______________________________________________________________________________
                          SGI Security Advisory

        Title:   InPerson Vulnerabilities
    Reference:   CAN-2000-0799
       Number:   20001101-01-I
        Date:    November 20, 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.
______________________________________________________________________________


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

InPerson is a multimedia desktop conferencing tool for IRIX workstations.

There have been several reports of vulnerabilities in InPerson which
allow users with local accounts on IRIX workstations to obtain root
access.

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

InPerson is installed by default on IRIX 5.3 through IRIX 6.5.10.

A local user account on the vulnerable system is required in order to
exploit the InPerson application.

These vulnerabilities can lead to a root compromise.

This vulnerabilities have been publicly discussed in Usenet newsgroups
and Security mailing lists or web sites:

http://geek-girl.com/bugtraq/1997_2/0191.html
http://www.securityfocus.com/bid/381
http://www.securityfocus.com/bid/1530
http://www.lsd-pl.net/files/get?IRIX/irx_inpview
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2000-0799


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

The steps below can be used to remove the InPerson application to prevent
exploitation of this vulnerability.


     1) Check to see if the vulnerable subsystem is installed.
        All versions of InPerson are vulnerable.

        % versions -b InPerson
           Name        Date        Description
        I  InPerson    07/18/2000  InPerson Desktop Conferencing, 2.2.1

     2) Become the root user on the system.

        % /bin/su -
        Password:
        #


     3) Remove the vulnerable subsystem.

        # versions remove InPerson


     4) Return to previous level.

        # exit
        %


When possible, install SGImeeting to replace InPerson conferencing
functionality.


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

No SGI patches are currently available for the InPerson application.

Please remove the InPerson software from your system with steps
in Temporary Solution section.

InPerson functionality has been replaced with SGImeeting which is
compatible with Microsoft NetMeeting, PictureTel LiveShare Plus,
SunForum, HP Visual Conference and other T.120 compliant clients.

Information on SGImeeting is available at:
http://www.sgi.com/software/sgimeeting/

SGImeeting 1.4 is available for IRIX 6.5.6 and above:
http://www.sgi.com/Products/Evaluation/6.5.6_sgimeeting_1.4/

SGImeeting 2.0 is available for IRIX 6.5.2 and above:
http://www.sgi.com/Products/Evaluation/6.5.2_sgimeeting_2.0/

- ------------------------
- --- 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
cse-security-alert () sgi com.

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______________________________________________________________________________
      This information is provided freely to all interested parties
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