ZDI-09-045: Microsoft DirectShow Quicktime Atom Parsing Memory- Corruption Vulnerability

From: ZDI Disclosures <zdi-disclosures@tippingpoint.com>
To: FD <full-disclosure@lists.grok.org.uk>,bugtraq <bugtraq@securityfocus.com>
Cc: ZDI Disclosures <zdi-disclosures@tippingpoint.com>
Subject: ZDI-09-045: Microsoft DirectShow Quicktime Atom Parsing Memory- Corruption Vulnerability

ZDI-09-045: Microsoft DirectShow Quicktime Atom Parsing Memory Corruption
July 14, 2009

-- CVE ID:

-- Affected Vendors:

-- Affected Products:
Microsoft Windows 2000
Microsoft Windows XP
Microsoft Windows Server 2003

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TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 8307.
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-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Microsoft Windows. User interaction is
required in that a target must visit a malicious page or open a
malicious video file.

The specific flaw exists within the parsing of the length records of
certain QuickTime atoms. The application implicitly trusts the length
during a transformation which will lead to memory corruption and can be
leveraged to execute arbitrary code under the context of the current

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


-- Disclosure Timeline:
2008-09-23 - Vulnerability reported to vendor
2009-07-14 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Anonymous

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