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Insecure Library Loading
Highly critical

Windows Embedded OpenType Font Engine Two Vulnerabilities

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Description


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

1) An integer truncation error in the Embedded OpenType (EOT) Font Engine component when parsing data records in embedded fonts can be exploited to cause a heap-based buffer overflow via a specially crafted embedded font.

2) An integer overflow error in the Embedded OpenType (EOT) Font Engine component when parsing name tables in embedded fonts can be exploited to corrupt memory via a specially crafted embedded font.

Successful exploitation of the vulnerabilities allows execution of arbitrary code when a user e.g. visits a malicious web page.


Solution:
Apply patches.

Further details available to Secunia VIM customers

Provided and/or discovered by:
1) An anonymous person via iDefense.
2) The vendor credits Thomas Garnier.

Original Advisory:
MS09-029 (KB961371):
http://www.microsoft.com/technet/security/Bulletin/MS09-029.mspx

iDefense:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=811

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: Windows Embedded OpenType Font Engine Two Vulnerabilities

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