Rational System Architect: Execute Arbitrary Code/Commands -- Remote with User Interaction

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                         AUSCERT Security Bulletin

                               ASB-2011.0035
    Rational System Architect ActiveBar ActiveX Control Vulnerabilities
                                4 May 2011

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:              Rational System Architect
Operating System:     Windows
Impact/Access:        Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:           Patch/Upgrade
CVE Names:            CVE-2011-1207  
Member content until: Friday, June  3 2011

OVERVIEW

        IBM has released an update to correct vulnerabilities in the ActiveX
        control for Rational System Architect ActiveBar. [1]


IMPACT

        It is possible to execute arbitrary code by instatiating either:
        
           actbar.ocx
           actbar2.ocx
        
        Currently known methods of this control that are vulnerable include
        
           Save()
           SaveLayoutchanges()
           SaveMenuUsageData()
           SetLayoutData() Note: affects ActiveBar1 only.
        
        This vulnerability been given the CVE identifier CVE-2011-1207.


MITIGATION

        IBM has released an update to correct these vulnerabilities. You can
        get the updates from the IBM website [1].
        
        Alternatively, you can set the kill bits for each of the ActiveX 
        controls. Below is the contents of a registry file to set the kill
        bit for each control.
        
          1) Copy the text below to a tile
          2) Save the file as ActBar_RegistryEntry.reg
          3) With administrative privileges, double click the file
          4) Click yes to the prompt for importing the registry settings
          5) Click OK
        
        ----- BEGIN INCLUDE -----
        Windows Registry Editor Version 5.00
        
        [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{E4F874A0-56ED-11D0-9C43-00A0C90F29FC}]
        "Compatibility Flags"=dword:00000400
        
        [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{4932CEF4-2CAA-11D2-A165-0060081C43D9}]
        "Compatibility Flags"=dword:00000400
        
        ----- END INCLUDE -----


REFERENCES

        [1] Rational System Architect ActiveBar ActiveX Control Vulnerabilities
            https://www-304.ibm.com/support/docview.wss?uid=swg21497689

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The University of Queensland
Brisbane
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