Advisory Details

June 14th, 2011

Adobe Shockwave KEY* Chunk Invalid Size Remote Code Execution Vulnerability

ZDI-11-212
ZDI-CAN-1248

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 11354. 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 Adobe Shockwave. 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 way Shockwave handles KEY* elements in a Director file. The Shockwave player will allocate memory with a size taken from the Shockwave file but will always copy a few bytes into that allocation. KEY* sizes smaller then 4 will therefore cause an overwrite of the allocation. By cleverly crafting the input file, an attacker can leverage this to execute remote code under the context of the current user.

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
  • 2011-05-12 - Vulnerability reported to vendor
  • 2011-06-14 - Coordinated public release of advisory
CREDIT Luigi Auriemma
BACK TO ADVISORIES