Message-ID: <OF6DCC3A97.5FC40CF4-ON8825751A.00745288-8625751A.00745A4A@3com.com>
Date: Tue, 9 Dec 2008 15:10:54 -0600
From: zdi-disclosures@...m.com
To: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com
Subject: ZDI-08-087: Microsoft Internet Explorer Webdav
 Request Parsing Heap Corruption Vulnerability

ZDI-08-087: Microsoft Internet Explorer Webdav Request Parsing Heap 
Corruption Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-08-087
December 9, 2008

-- CVE ID:
CVE-2008-4259

-- Affected Vendors:
Microsoft

-- Affected Products:
Microsoft Internet Explorer

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 6615. 
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows attackers to execute arbitrary code on
vulnerable installations of Microsoft Internet Explorer 7 on the
Microsoft Vista operating system. User interaction is required to
exploit this vulnerability in that the target must visit a malicious
page.

The specific flaw exists during a WebDAV fetch of a document from a path
containing a large number of characters. Mishandling of cached content
results in a heap corruption which can be leveraged to execute arbitrary
code under the context of the current instance of Internet Explorer.

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

http://www.microsoft.com/technet/security/bulletin/MS08-073.mspx

-- Disclosure Timeline:
2008-05-19 - Vulnerability reported to vendor
2008-12-09 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Brett Moore, Insomnia Security

-- About the Zero Day Initiative (ZDI):
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    http://www.zerodayinitiative.com

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