ZDI-11-206: Adobe Shockwave GIF Decompression Remote Code Execution Vulnerability

ZDI-11-206: Adobe Shockwave GIF Decompression Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-206

June 14, 2011

– CVE ID:
CVE-2011-2111

– CVSS:
7.5, (AV:N/AC:L/Au:N/C:P/I:P/A:P)

– Affected Vendors:
Adobe

– Affected Products:
Adobe Shockwave Player

– TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 11227.
For further product information on the TippingPoint IPS, visit:

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:
This vulnerability was discovered by:
* Luigi Auriemma

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