NGSSoftware Insight Security Research Advisory Name: RealPlayer & RealOne Player Buffer Overruns Systems Affected: RealOne Player, RealOne Player v2, RealOne Enterprise Desktop / RealPlayer Enterprise (all language versions, all platforms) Severity: High Risk Vendor URL: http://www.real.com/ Author: Mark Litchfield [ mark@ngssoftware.com ] Date Vendor Notified: 23rd Dec 2003 Date of Public Advisory: 4th February 2004 Advisory number: #NISR04022004a Advisory URL: http://www.ngssoftware.com/advisories/realone.txt Description *********** 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. Details ******* By crafting malformed .RP, .RT, .RAM, .RPM & .SMIL files it is possible to cause heap and 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 attachment (except in the case of the .RPM file) Fix Information *************** REAL have supplied a patch for this and other problems discovered by Jouko Pynnönen and can be downloaded from REAL's website. Detailed below is REAL's instruction listed in their own advisory found at http://service.real.com/help/faq/security/040123_player/EN/ to remediate these issues. RealOne Player, RealOne Player v2 (localized languages) and RealPlayer 10 Beta customers please use the following steps to update your Player: * In the Tools menu select Check for Update. * Select the box next to the "RealPlayer 10" (English) or "RealOne Player" (localized) component. * Click the Install button to download and install the update. RealPlayer 8 (version 6.0.9.584): * Go to the Help menu. * Select "Check for Update". * Select the box next to the "RealPlayer 10" (English) or "RealOne Player" (localized) component. * Click the Install button to download and install the update. 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. http://www.ngssoftware.com/ Telephone +44 208 401 0070 Fax +44 208 401 0076 enquiries@ngssoftware.com