ZDI-08-020: Microsoft GDI WMF Parsing Heap Overflow Vulnerability Apr 08 2008 06:54PM
zdi-disclosures 3com com
ZDI-08-020: Microsoft GDI WMF Parsing Heap Overflow Vulnerability


-- CVE ID:


-- Affected Vendors:


-- Affected Products:

Microsoft Windows XP SP2

Microsoft Windows 2003 SP1

Microsoft Windows Vista

-- Vulnerability Details:

This vulnerability allows remote attackers to execute arbitrary code on

vulnerable installations of Microsoft Windows. User interaction is

required in that a user must open a malicious file or visit a malicious

web page.

The specific flaw exists within the parsing of malformed WMF files. A

vulnerability exists in the GDI funcion CreateDIBPatternBrushPt used

when processing WMF files. Due to a mis-calculation of user data a heap

chunk can be under-allocated and later used resulting in a heap

overflow. Successful exploitation can result in system compromise under

the credentials of the currently logged in user.

-- Vendor Response:

Microsoft has issued an update to correct this vulnerability. More

details can be found at:


-- Disclosure Timeline:

2008-02-07 - Vulnerability reported to vendor

-- Credit:

This vulnerability was discovered by:

* Sebastian Apelt (webmaster (at) buzzworld (dot) org [email concealed])

-- 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:


CONFIDENTIALITY NOTICE: This e-mail message, including any attachments,

is being sent by 3Com for the sole use of the intended recipient(s) and

may contain confidential, proprietary and/or privileged information.

Any unauthorized review, use, disclosure and/or distribution by any

recipient is prohibited. If you are not the intended recipient, please

delete and/or destroy all copies of this message regardless of form and

any included attachments and notify 3Com immediately by contacting the

sender via reply e-mail or forwarding to 3Com at postmaster (at) 3com (dot) com. [email concealed]

[ reply ]


Privacy Statement
Copyright 2010, SecurityFocus