Advisory Details

December 10th, 2010

RealNetworks RealPlayer RMX Header Remote Code Execution Vulnerability

ZDI-10-281
ZDI-CAN-913

CVE ID CVE-2010-4391
CVSS SCORE 9.0, (AV:N/AC:L/Au:N/C:P/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 10723. 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 the applications support for parsing the RMX file format. When parsing the format, the application will explicitly trust 32-bits in a field used in the header for the allocation of an array. This can cause a buffer to be under-allocated and will cause a buffer overflow when initializing the array. This can lead to code execution under the context of the application.

ADDITIONAL DETAILS RealNetworks has issued an update to correct this vulnerability. More details can be found at:
http://service.real.com/realplayer/security/12102010_player/en/
DISCLOSURE TIMELINE
  • 2010-08-25 - Vulnerability reported to vendor
  • 2010-12-10 - Coordinated public release of advisory
CREDIT Sebastian Apelt (www.siberas.de)
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