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Vulnerability of Office, SQL Server, HIS, Visual Basic: code execution via MSCOMCTL.OCX

Synthesis of the vulnerability 

An attacker can invite the victim to browse a web page loading the MSCOMCTL.OCX ActiveX, in order to execute code on his computer.
Vulnerable software: Microsoft HIS, Office, Access, Office Communicator, Excel, Microsoft FrontPage, InfoPath, OneNote, Outlook, PowerPoint, Project, Publisher, Visio, Word, SQL Server, Visual Studio.
Severity of this announce: 4/4.
Creation date: 14/08/2012.
Références of this computer vulnerability: 2720573, BID-54948, CERTA-2012-AVI-443, CVE-2012-1856, MS12-060, VIGILANCE-VUL-11851.

Description of the vulnerability 

The MSCOMCTL.OCX file is installed by several Microsoft products:
 - Microsoft Office
 - Microsoft SQL Server
 - Microsoft Commerce Server
 - Microsoft Host Integration Server
 - Microsoft Visual FoxPro
 - Visual Basic 6.0 Runtime

This file contains the Windows Common Controls ActiveX controls (MSCOMCTL.TreeView, MSCOMCTL.ListView2, MSCOMCTL.TreeView2, and MSCOMCTL.ListView, MSCOMCTL.TabStrip).

The TabStrip control can use a freed memory area.

An attacker can therefore invite the victim to browse a web page loading the MSCOMCTL.OCX ActiveX, in order to execute code on his computer.
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This computer weakness announce impacts software or systems such as Microsoft HIS, Office, Access, Office Communicator, Excel, Microsoft FrontPage, InfoPath, OneNote, Outlook, PowerPoint, Project, Publisher, Visio, Word, SQL Server, Visual Studio.

Our Vigil@nce team determined that the severity of this security alert is critical.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this vulnerability.

Solutions for this threat 

Office, SQL Server, HIS, Visual Basic: patch for MSCOMCTL.OCX.
A patch is available:
 - Microsoft Office
 - Microsoft SQL Server
 - Microsoft Commerce Server
 - Microsoft Host Integration Server
 - Microsoft Visual FoxPro
 - Visual Basic 6.0 Runtime
The Microsoft announce indicates workarounds.
The KB 2720573 indicates known problems:
  http://support.microsoft.com/kb/2720573
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