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Insecure Library Loading
Highly critical

WebEx Meeting Manager WebexUCFObject ActiveX Control Insecure Library Loading

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Release Date:  2010-12-06    Last Update:  2011-11-10    Views:  5,959

Secunia Advisory SA41348

Where:

From remote

Impact:

System access

Solution Status:

Vendor Patch

CVE Reference(s):

No CVE references.

Description


Parvez Anwar has discovered a vulnerability in the WebEx Meeting Manager WebexUCFObject ActiveX control, which can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to the WebexUCFObject ActiveX control (atucfobj.dll) loading libraries (e.g. wbxtrace.dll) in an insecure manner. This can be exploited to load arbitrary libraries by e.g. embedding the ActiveX control into a Microsoft Word document and tricking a user into opening the document from a remote WebDAV or SMB share.

The vulnerability is confirmed in atucfobj.dll version 20.2009.2706.1025 included in the WebEx Meeting Manager ActiveX package. Other versions may also be affected.


Solution:
The vendor has planned the rollout of an updated version for December 4th, 2010. Please contact the vendor for additional details.

Provided and/or discovered by:
Parvez Anwar via Secunia

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: WebEx Meeting Manager WebexUCFObject ActiveX Control Insecure Library Loading

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