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Insecure Library Loading
Highly critical

Microsoft Windows GDI Image Parsing Buffer Overflows

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Description


Two vulnerabilities have been reported in Microsoft Windows, which can be exploited by malicious people to compromise a vulnerable system.

1) An error in the way GDI (Graphics Device Interface) handles integer calculations when processing image file headers can be exploited to cause a heap-based buffer overflow via an EMF or WMF image file with specially crafted header values (e.g. colour depth).

2) A boundary error in GDI when handling filename parameters in EMF files can be exploited to cause a stack-based buffer overflow via a specially crafted EMF file.

Successful exploitation of the vulnerabilities may allow execution of arbitrary code.


Solution:
Apply patches.

Further details available to Secunia VIM customers

Provided and/or discovered by:
1) The vendor credits:
* Jun Mao, iDefense Labs.
* Sebastian Apelt, reported via Zero Day Initiative.
* Thomas Garnier, SkyRecon.

2) Yamata Li

Original Advisory:
MS08-021 (KB948590):
http://www.microsoft.com/technet/security/Bulletin/MS08-021.mspx

iDefense Labs:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=681
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=682

ZDI:
http://www.zerodayinitiative.com/advisories/ZDI-08-020/

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Microsoft Windows GDI Image Parsing Buffer Overflows

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