Advisory Details

June 15th, 2011

Adobe Shockwave Shockwave 3d Asset.x32 DEMX Chunk Substructure Count Remote Code Execution Vulnerability

ZDI-11-222
ZDI-CAN-1194

CVE ID CVE-2011-2113
CVSS SCORE 7.5, (AV:N/AC:L/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Adobe
AFFECTED PRODUCTS Shockwave Player
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11361. 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 the Adobe Shockwave Player. 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 DEMX chunk inside Adobe's RIFF-based Director file format. The code within the Shockwave 3d Asset.x32 module does not properly check a size value used as the size for a malloc. The given size will wrap, causing a small buffer to be allocated. This can lead to memory corruption which can be leveraged to execute arbitrary code under the context of the user running the browser.

ADDITIONAL DETAILS Adobe has issued an update to correct this vulnerability. More details can be found at:
http://www.adobe.com/support/security/bulletins/apsb11-17.html
DISCLOSURE TIMELINE
  • 2011-04-20 - Vulnerability reported to vendor
  • 2011-06-15 - Coordinated public release of advisory
CREDIT Aniway (Aniway.Anyway@gmail.com)
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