Message-ID: <AF6E290B52139041BD6CA591212E455B576470674C@GVW0442EXB.americas.hpqcorp.net>
Date: Tue, 14 Jun 2011 21:40:51 +0000
From: ZDI Disclosures <zdi-disclosures@...pingpoint.com>
To: "'full-disclosure@...ts.grok.org.uk'" <full-disclosure@...ts.grok.org.uk>, 
	"'bugtraq@...urityfocus.com'" <bugtraq@...urityfocus.com>
Subject: ZDI-11-203: Adobe Shockwave xtcL Chunk Parsing
 Integer Overflow Remote Code Execution Vulnerability

ZDI-11-203: Adobe Shockwave xtcL Chunk Parsing Integer Overflow Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-203

June 14, 2011

-- CVE ID:
CVE-2011-2112

-- 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 11225. 
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 code responsible for parsing xtcL
RIFF chunks within Director files. When attempting to allocate dynamic
memory for substructures within this object, the code within DIRAPI.dll
does not properly validate the size specified within the chunk. By
crafting malicious values the process can be made to under-allocate a
buffer which is later corrupted by memory copy operations. This can be
leveraged by a remote attacker to execute 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:
2011-04-01 - Vulnerability reported to vendor
2011-06-14 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Luigi Auriemma

-- About the Zero Day Initiative (ZDI):
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