Advisory Details

November 19th, 2012

RealNetworks RealPlayer RV20 Frame Size Array Remote Code Execution Vulnerability

ZDI-12-187
ZDI-CAN-1350

CVE ID CVE-2012-0923
CVSS SCORE 7.5, (AV:N/AC:L/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS RealNetworks
AFFECTED PRODUCTS RealPlayer
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 how the application parses a particular array contained within a Real Media file and then uses the data. When allocating and reading frame size information, the application will fail to check the bounds of how this array is used. The application will use results in this array as an allocation for the size of a buffer. When initializing this new buffer, the application can then write outside it's bounds which will lead to code execution under the context of the application.

VENDOR RESPONSE RealNetworks has issued an update to correct this vulnerability. More details can be found at:
http://service.real.com/realplayer/security/09072012_player/en/
DISCLOSURE TIMELINE
  • 2011-10-21 - Vulnerability reported to vendor
  • 2012-11-19 - Coordinated public release of advisory
CREDIT Luigi Auriemma
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