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



______________________________________________________________________________

                          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.



                      ------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 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 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

cse-security-alert@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 

end

^d



In the example above,  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------



SGI provides a comprehensive customer World Wide Web site. This site is

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



                      ------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, SGI is appropriately credited and the document retains and

      includes its valid PGP signature.





-----BEGIN PGP SIGNATURE-----

Version: 2.6.2



iQCVAwUBOhmt/7Q4cFApAP75AQEedAQAuaKJr1WwgxyDVCNYkk/e3a6EG8hHcnFB

n99ewSTP1aZHezLw06Q1rs/kdruqXfI3C+vM3sjoBICa+4LkqvbzUujTpgf+P9XO

dYsxhuTv8F0elMtpch2VE5m1t6kVpN43+zFss4ZFXqng1wBp8qBIQAg3b6MB7wT3

IcVJxLSBVjk=

=uLET

-----END PGP SIGNATURE-----