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Insecure Library Loading
Highly critical

Foxit Reader ActiveX Control Buffer Overflow and Insecure Library Loading Vulnerabilities

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Release Date:  2011-07-21    Last Update:  2011-10-07    Views:  6,625

Secunia Advisory SA44947

Where:

From remote

Impact:

System access

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Two vulnerabilities have been discovered in Foxit Reader, which can be exploited by malicious people to compromise a user's system.

1) A boundary error in the FoxitReaderOCX ActiveX control when processing the "OpenFile()" method can be exploited to cause a heap-based buffer overflow via an overly long string passed in the "strFilePath" parameter.

2) The application loads libraries (e.g. dwmapi.dll and dwrite.dll) in an insecure manner and can be exploited to load arbitrary libraries by tricking a user into e.g. opening a PDF file located on a remote WebDAV or SMB share.

Successful exploitation of these vulnerabilities allows execution of arbitrary code.

The vulnerabilities are confirmed in version 5.0.1.0523. Other versions may also be affected.


Solution:
Update to version 5.0.2.0718.

Provided and/or discovered by:
1) Originally reported by SarBoT511 and D3V!L FUCKER in version 3.1.4.1125, but the control was not marked "safe for scripting". Fixed in version 4.3.0.1110 at the same time as the control was marked "safe for scripting".

Discovery of regression in the "safe for scripting" control in version 5.0.1.0523 by Secunia Research.

2) Jose Hernandez, Solutionary Engineering Research Team (SERT).

Original Advisory:
Foxit:
http://www.foxitsoftware.com/products/reader/security_bulletins.php#certain
http://www.foxitsoftware.com/products/reader/security_bulletins.php#execution

Secunia Research:
http://secunia.com/secunia_research/2011-55/

SarBoT511 and D3V!L FUCKER:
http://www.exploit-db.com/exploits/11196/

Solutionary Engineering Research Team:
http://www.solutionary.com/index/SERT/Vuln-Disclosures/Foxit-Reader.htm

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: Foxit Reader ActiveX Control Buffer Overflow and Insecure Library Loading Vulnerabilities<

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