Advisories
RealPlayer Zipped Skin File Buffer Overflow
Release Date:
October 27, 2004
Date Reported:
October 11, 2004
Patch Development Time (In Days):
Severity:
High (Code Execution)
Vendor:
RealNetworks
Systems Affected:
For Microsoft Windows
RealPlayer 10.5 (6.0.12.1053 and earlier) RealPlayer 10 RealOne Player v2 RealOne Player v1
Overview:
eEye Digital Security has discovered a vulnerability in RealPlayer that allows a remote attacker to reliably overwrite the stack with arbitrary data and execute arbitrary code in the context of the user under which the player is running.
Technical Details:
A RealPlayer skin file (.rjs extension) can be downloaded and applied automatically through a web browser without the user's permission. A skin file is a bundle of graphics and a .ini file, stored together in ZIP format. DUNZIP32.DLL, which is included with RealPlayer, is used to extract the contents of the skin file. When an .rjs file containing a long file name (greater than around 0x8000 bytes) is opened, either in RealPlayer or through a web browser, a stack based buffer overflow occurs, allowing an exception handler record to be overwritten and EIP to be hijacked.
Protection:
Retina Network Security Scanner has been updated to identify this vulnerability.
Vendor Status:
RealNetworks has released a patch for this vulnerability. The patch is available via the "Check for Update" menu item under Tools on the RealPlayer menu bar. "Security Update - Skin File Overflow" Recommended Player Update: Resolves a security vulnerability when activating a specifically malformed skins file. Skins files available on RealNetworks site are examined before being posted. Skins files from other sources should be treated with caution.
Credit:
Discovery: Yuji Ukai
Related Links:
Retina Network Security Scanner - Free 15 Day Trial http://www.eeye.com/html/Products/Retina/download.html
Greetings:
TCC, YY, KEN, O.C., Guys@Shinbashi_Sanuki-Iyo_Place, Guys@NightLandSlotmachinePlayroom
Copyright (c) 1998-2008 eEye Digital Security
Permission is hereby granted for the redistribution of this alert electronically. It is not to be edited in any way without express consent of eEye. If you wish to reprint the whole or any part of this alert in any other medium excluding electronic medium, please email alert@eEye.com for permission.
Disclaimer
The information within this paper may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are no warranties, implied or express, with regard to this information. In no event shall the author be liable for any direct or indirect damages whatsoever arising out of or in connection with the use or spread of this information. Any use of this information is at the user's own risk.
October 27, 2004
Date Reported:
October 11, 2004
Patch Development Time (In Days):
 |
|
|
|
| 16 |
Severity:
High (Code Execution)
Vendor:
RealNetworks
Systems Affected:
For Microsoft Windows
RealPlayer 10.5 (6.0.12.1053 and earlier) RealPlayer 10 RealOne Player v2 RealOne Player v1
Overview:
eEye Digital Security has discovered a vulnerability in RealPlayer that allows a remote attacker to reliably overwrite the stack with arbitrary data and execute arbitrary code in the context of the user under which the player is running.
Technical Details:
A RealPlayer skin file (.rjs extension) can be downloaded and applied automatically through a web browser without the user's permission. A skin file is a bundle of graphics and a .ini file, stored together in ZIP format. DUNZIP32.DLL, which is included with RealPlayer, is used to extract the contents of the skin file. When an .rjs file containing a long file name (greater than around 0x8000 bytes) is opened, either in RealPlayer or through a web browser, a stack based buffer overflow occurs, allowing an exception handler record to be overwritten and EIP to be hijacked.
Protection:
Retina Network Security Scanner has been updated to identify this vulnerability.
Vendor Status:
RealNetworks has released a patch for this vulnerability. The patch is available via the "Check for Update" menu item under Tools on the RealPlayer menu bar. "Security Update - Skin File Overflow" Recommended Player Update: Resolves a security vulnerability when activating a specifically malformed skins file. Skins files available on RealNetworks site are examined before being posted. Skins files from other sources should be treated with caution.
Credit:
Discovery: Yuji Ukai
Related Links:
Retina Network Security Scanner - Free 15 Day Trial http://www.eeye.com/html/Products/Retina/download.html
Greetings:
TCC, YY, KEN, O.C., Guys@Shinbashi_Sanuki-Iyo_Place, Guys@NightLandSlotmachinePlayroom
Copyright (c) 1998-2008 eEye Digital Security
Permission is hereby granted for the redistribution of this alert electronically. It is not to be edited in any way without express consent of eEye. If you wish to reprint the whole or any part of this alert in any other medium excluding electronic medium, please email alert@eEye.com for permission.
Disclaimer
The information within this paper may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are no warranties, implied or express, with regard to this information. In no event shall the author be liable for any direct or indirect damages whatsoever arising out of or in connection with the use or spread of this information. Any use of this information is at the user's own risk.
