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Insecure Library Loading
Highly critical

PowerPoint Viewer OCX ActiveX Control Buffer Overflow Vulnerabilities

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Release Date:  2007-05-02    Last Update:  2007-05-10    Views:  12,964

Secunia Advisory SA25092

Where:

From remote

Impact:

System access

Solution Status:

Unpatched

CVE Reference(s):

Description


shinnai has discovered some vulnerabilities in PowerPoint Viewer OCX, which can be exploited by malicious people to compromise a user's system.

The vulnerabilities are caused due to boundary errors within the PowerPoint Viewer ActiveX control (PowerPointViewer.ocx). These can be exploited to cause stack-based buffer overflows via overly long arguments passed to certain methods (e.g. "HttpDownloadFile()" or "OpenWebFile()").

Successful exploitation may allow execution of arbitrary code when a user visits a malicious website.

The vulnerabilities are confirmed in version 3.1.0.3. Other versions may also be affected.


Solution:
Set the kill-bit for the affected ActiveX control.

Provided and/or discovered by:
shinnai

Original Advisory:
http://moaxb.blogspot.com/2007/05/moaxb-01-powerpointviewerocx-31.html

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: PowerPoint Viewer OCX ActiveX Control Buffer Overflow Vulnerabilities

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