BugTraq
TSRT-06-09: Microsoft DirectAnimation COM Object Memory Corruption Vulnerability Aug 08 2006 07:17PM
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TSRT-06-09: Microsoft DirectAnimation COM Object Memory Corruption
Vulnerability

http://www.tippingpoint.com/security/advisories/TSRT-06-09.html
August 8, 2006

-- CVE ID:
CVE-2006-3638

-- Affected Vendor:
Microsoft

-- Affected Products:
Internet Explorer 6 All Versions
Internet Explorer 5 SP4

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability since August 8, 2006 by Digital Vaccine protection
filter ID 4593. For further product information on the TippingPoint IPS:

http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows attackers to execute arbitrary code on
vulnerable installations of Microsoft Internet Explorer. User
interaction is required to exploit this vulnerability in that the
target must visit a malicious page.

The specific flaw exists in the DirectAnimation.DATuple ActiveX control
when improperly calling the Nth() method. By supplying a positive
integer we can control a data reference calculation that is later used
to control execution. The problem is due to the lack of sanity checking
on the index used during a call to TupleNthBvrImpl::GetTypeInfo() in
danim.dll.

-- Vendor Response:
Microsoft has issued an update to correct this vulnerability. More
details can be found at:

http://www.microsoft.com/technet/security/bulletin/MS06-042.mspx

-- Disclosure Timeline:
2006.04.27 - Vulnerability reported to vendor
2006.08.08 - Digital Vaccine released to TippingPoint customers
2006.08.08 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by Cody Pierce, Tipping Point Security
Research Team.

-- About the TippingPoint Security Research Team (TSRT):
The TippingPoint Security Research Team (TSRT) consists of industry
recognized security researchers that apply their cutting-edge
engineering, reverse engineering and analysis talents in our daily
operations. More information about the team is available at:

http://www.tippingpoint.com/security

The by-product of these efforts fuels the creation of vulnerability
filters that are automatically delivered to our customers' intrusion
prevention systems through the Digital Vaccine(R) service.

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