Advisory Details

June 14th, 2011

Adobe Shockwave GIF Decompression Remote Code Execution Vulnerability

ZDI-11-206
ZDI-CAN-1060

CVE ID CVE-2011-2111
CVSS SCORE 7.5, (AV:N/AC:L/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Adobe
AFFECTED PRODUCTS Shockwave Player
TIPPINGPOINT™ IPS CUSTOMER PROTECTION TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11227. 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 support for embedded GIF images inside Adobe's RIFF-based Director file format. The code within the IML32.dll module does not properly check a counter value that is decreased during loop iterations for an integer underflow. By crafting a GIF image with a sufficiently small value this can lead to memory corruption which can be leveraged to execute arbitrary code under the context of the user running the browser.

VENDOR RESPONSE 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
  • 2011-04-11 - Vulnerability reported to vendor
  • 2011-06-14 - Coordinated public release of advisory
CREDIT Luigi Auriemma
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