Hash: SHA1

             AUSCERT External Security Bulletin Redistribution

      ESB-2004.0260 -- NGSSoftware Insight Security Research Advisory
              REAL One Player R3T File Format Stack Overflow
                               08 April 2004


        AusCERT Security Bulletin Summary

Product:                RealPlayer 8
                        RealOne Player
                        RealOne Player v2 for Windows
                        RealPlayer 10 Beta
                        ReaPlayer Enterprise
Publisher:              NGSSoftware
Operating System:       Windows
Impact:                 Execute Arbitrary Code/Commands
Access Required:        Remote

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NGSSoftware Insight Security Research Advisory

Name: REAL One Player R3T File Format Stack Overflow
Systems Affected: RealPlayer 8, RealOne Player, RealOne Player v2 for
   Windows only (all languages), RealPlayer 10 Beta (English only) and
   ReaPlayer Enterprise (all versions, standalone and as configured by the
   RealPlayer  Enterprise Manager).
Severity: High (If RT3 Plugin Present Within REAL Player)
Vendor URL: http://www.real.com
Author: Mark Litchfield [ mark@ngssoftware.com ]
Date Vendor Notified:    4th February 2004
Date of Public Advisory: 7th April 2004
Advisory number: #NISR17042004
Advisory URL: http://www.ngssoftware.com/advisories/realr3t.txt


RealOne / RealPlayer is one of the most widely used products for internet
media delivery.  There are currently in excess of 200 million users worlwide
of these products.


By crafting malformed .R3T file it is possible to cause a stack based
overruns in RealPlayer / RealOne Player.  By forcing a browser to a website
containing such a file, code could be exectued on the target machine running 
in the context of the logged on user, alternatively the end user would be
required to open the .R3T file as a mail attachment.

Fix Information

For the various fix options available for different types of REAL products,
NGS suggest visiting http://service.real.com/help/faq/security/040406_r3t/en/
for detailed information

About NGSSoftware
NGSSoftware design, research and develop intelligent, advanced application
security assessment scanners.  Based in the United Kingdom, NGSSoftware have
offices in the South of London and the East Coast of Scotland.  NGSSoftware's
sister company NGSConsulting, offers best of breed security consulting
services, specialising in application, host and network security assessments.


Telephone +44 208 401 0070
Fax +44 208 401 0076


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