Advisory Details

April 12th, 2011

RealNetworks RealPlayer OpenURLInDefaultBrowser Remote Code Execution Vulnerability

ZDI-11-122
ZDI-CAN-1016

CVE ID CVE-2011-1426
CVSS SCORE 9.7, (AV:N/AC:L/Au:N/C:C/I:P/A:C)
AFFECTED VENDORS RealNetworks
AFFECTED PRODUCTS RealPlayer
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11062. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of RealNetworks RealPlayer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within RealPlayer exposes a method called OpenURLInDefaultBrowser() that can be accessed through RealPlayer's internal browser. When this method is called, it will open and execute the first parameter based on the operating system's default handler for the filetype. An attacker can reach RealPlayer's internal browser by utilizing a specially crafted .rnx file. This can be leveraged to execute arbitrary code under the context of the user invoking RealPlayer.

ADDITIONAL DETAILS RealNetworks has issued an update to correct this vulnerability. More details can be found at:
http://service.real.com/realplayer/security/04122011_player/en/
DISCLOSURE TIMELINE
  • 2011-02-17 - Vulnerability reported to vendor
  • 2011-04-12 - Coordinated public release of advisory
CREDIT Peter Vreugdenhil ( http://vreugdenhilresearch.nl )
Andrea Micalizzi aka rgod
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