ZDI-09-035: Microsoft Word Document Stack Based Buffer Overflow Vulnerability Jun 10 2009 03:28PM
ZDI Disclosures (zdi-disclosures tippingpoint com)
ZDI-09-035: Microsoft Word Document Stack Based Buffer Overflow
June 10, 2009

-- CVE ID:

-- Affected Vendors:

-- Affected Products:
Microsoft Office Word

-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Microsoft Word. User interaction is required
to exploit this vulnerability in that the target must visit a malicious
page, open a malicious e-mail, or open a malicious file.

The specific flaw exists within the parsing of vulnerable tags inside a
Microsoft Word document. Microsoft Word trusts a length field read from
the file which is used to read file contents into a buffer allocated on
the stack. When an invalid length is present, a stack based buffer
overflow occurs, resulting in the ability to execute arbitrary code.

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


-- Disclosure Timeline:
2008-07-08 - Vulnerability reported to vendor
2009-06-10 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
* ling & wushi of team509

-- About the Zero Day Initiative (ZDI):
Established by TippingPoint, The Zero Day Initiative (ZDI) represents
a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:


The ZDI is unique in how the acquired vulnerability information is
used. TippingPoint does not re-sell the vulnerability details or any
exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
its intrusion prevention technology. Explicit details regarding the
specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
altruistic aim of helping to secure a broader user base, TippingPoint
provides this vulnerability information confidentially to security
vendors (including competitors) who have a vulnerability protection or
mitigation product.

Our vulnerability disclosure policy is available online at:


[ reply ]


Privacy Statement
Copyright 2010, SecurityFocus