Advisory Details

March 22nd, 2012

RealNetworks RealPlayer VIDOBJ_START_CODE Remote Code Execution Vulnerability

ZDI-12-048
ZDI-CAN-1368

CVE ID CVE-2012-0924
CVSS SCORE 9, (AV:N/AC:L/Au:N/C:P/I:P/A:C)
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 in that a target must visit a malicious page or open a malicious file.

The flaw exists within dmp4.dll, specifically the decoding of an MPEG stream. When encountering a VIDOBJ_START_CODE object the process inproperly validates the size of the destination buffer used for rendering. The contents of a decoded frame are copied to this region which can result in heap corruption if the decoded frame size exceeds the size of this region. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the process.

ADDITIONAL DETAILS RealNetworks has issued an update to correct this vulnerability. More details can be found at:
http://service.real.com/realplayer/security/02062012_player/en/
DISCLOSURE TIMELINE
  • 2011-10-21 - Vulnerability reported to vendor
  • 2012-03-22 - Coordinated public release of advisory
CREDIT Luigi Auriemma
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