RealNetworks RealGames StubbyUtil.ShellCtl.1 ActiveX Control (InstallerDlg.dll v2.6.0.445) Multiple Remote Commands Execution and Code Execution Vulnerabilities

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RealNetworks RealGames StubbyUtil.ShellCtl.1 ActiveX Control 
(InstallerDlg.dll v2.6.0.445) Multiple Remote Commands Execution 
and Code Execution Vulnerabilities

tested against Internet Explorer 9, Vista sp2

download url: http://www.gamehouse.com/

background:

When choosing to play with theese online games ex. the game called
"My Farm Life" (see url: http://www.gamehouse.com/download-games/my-farm-life )
you download an installer called GameHouse-Installer_am-myfarmlife_gamehouse_.exe

This setup program installs an ActiveX with the following settings:

CLSID: {80AB3FB6-9660-416C-BE8D-0E2E8AC3138B}
Progid: StubbyUtil.ShellCtl.1
Binary Path: C:\Program Files\RealArcade\Installer\bin\InstallerDlg.dll
Safe For Initialization (Registry): True
Safe For Scripting (Registry): True

This control is safe for scripting and safe for initialization,
so Internet Explorer will allow scripting of this control from
remote.

vulnerability:

This control has four methods implemented insecurely:

ShellExec()      -> allows to launch arbitrary commands
ShellExecRunAs() -> allows to launch arbitrary commands
CreateShortcut() -> allows to create arbitrary executable files inside the automatic
                    startup folders
CopyDocument()   -> allows to copy arbitrary executable files from a remote
                    network share to local folders, ex. automatic startup folders

other attacks are possible including information disclosure and file deletion, 
see typelib:

class IShellCtl { /* GUID={0D60A064-2009-4623-8FC1-F99CAC01037E} */
        /* DISPID=1610612736 */
        function QueryInterface(
                /* VT_PTR [26] [in] --> ? [29]  */ &$riid,
                /* VT_PTR [26] [out] --> VT_PTR [26]  */ &$ppvObj 
                )
        {
        }
        /* DISPID=1610612737 */
        /* VT_UI4 [19] */
        function AddRef(
                )
        {
        }
        /* DISPID=1610612738 */
        /* VT_UI4 [19] */
        function Release(
                )
        {
        }
        /* DISPID=1610678272 */
        function GetTypeInfoCount(
                /* VT_PTR [26] [out] --> VT_UINT [23]  */ &$pctinfo 
                )
        {
        }
        /* DISPID=1610678273 */
        function GetTypeInfo(
                /* VT_UINT [23] [in] */ $itinfo,
                /* VT_UI4 [19] [in] */ $lcid,
                /* VT_PTR [26] [out] --> VT_PTR [26]  */ &$pptinfo 
                )
        {
        }
        /* DISPID=1610678274 */
        function GetIDsOfNames(
                /* VT_PTR [26] [in] --> ? [29]  */ &$riid,
                /* VT_PTR [26] [in] --> VT_PTR [26]  */ &$rgszNames,
                /* VT_UINT [23] [in] */ $cNames,
                /* VT_UI4 [19] [in] */ $lcid,
                /* VT_PTR [26] [out] --> VT_I4 [3]  */ &$rgdispid 
                )
        {
        }
        /* DISPID=1610678275 */
        function Invoke(
                /* VT_I4 [3] [in] */ $dispidMember,
                /* VT_PTR [26] [in] --> ? [29]  */ &$riid,
                /* VT_UI4 [19] [in] */ $lcid,
                /* VT_UI2 [18] [in] */ $wFlags,
                /* VT_PTR [26] [in] --> ? [29]  */ &$pdispparams,
                /* VT_PTR [26] [out] --> VT_VARIANT [12]  */ &$pvarResult,
                /* VT_PTR [26] [out] --> ? [29]  */ &$pexcepinfo,
                /* VT_PTR [26] [out] --> VT_UINT [23]  */ &$puArgErr 
                )
        {
        }
        /* DISPID=1 */
        function CreateShortcut(
                /* VT_PTR [26] [in] --> VT_BSTR [8]  */ &$name,
                /* VT_PTR [26] [in] --> VT_BSTR [8]  */ &$target,
                /* VT_PTR [26] [in] --> VT_BSTR [8]  */ &$icon,
                /* VT_PTR [26] [in] --> VT_BSTR [8]  */ &$workingDir,
                /* VT_PTR [26] [in] --> VT_BSTR [8]  */ &$args 
                )
        {
                /* method CreateShortcut */
        }
        /* DISPID=2 */
        function DeleteShortcut(
                /* VT_PTR [26] [in] --> VT_BSTR [8]  */ &$name 
                )
        {
                /* method DeleteShortcut */
        }
        /* DISPID=3 */
        /* VT_BSTR [8] */
        function ModuleFileName(
                )
        {
                /* method ModuleFileName */
        }
        /* DISPID=4 */
        /* VT_BSTR [8] */
        function GetSpecialFolder(
                /* VT_UI4 [19] [in] */ $__MIDL_0025 
                )
        {
                /* method GetSpecialFolder */
        }
        /* DISPID=5 */
        /* VT_BOOL [11] */
        function CheckWnd(
                /* VT_PTR [26] [in] --> VT_BSTR [8]  */ &$__MIDL_0026 
                )
        {
                /* method CheckWnd */
        }
        /* DISPID=6 */
        /* VT_BSTR [8] */
        function ExistingTPS(
                /* VT_PTR [26] [in] --> VT_BSTR [8]  */ &$__MIDL_0028 
                )
        {
                /* method ExistingTPS */
        }
        /* DISPID=7 */
        function SetWorkingDir(
                /* VT_PTR [26] [in] --> VT_BSTR [8]  */ &$__MIDL_0030 
                )
        {
                /* method SetWorkingDir */
        }
        /* DISPID=8 */
        /* VT_BSTR [8] */
        function GetWorkingDir(
                )
        {
                /* method GetWorkingDir */
        }
        /* DISPID=9 */
        /* VT_R8 [5] */
        function OSVersion(
                )
        {
                /* method OSVersion */
        }
        /* DISPID=10 */
        /* VT_BSTR [8] */
        function GetSystemID(
                )
        {
                /* method GetSystemID */
        }
        /* DISPID=11 */
        function InstallFromCD(
                /* VT_BSTR [8] [in] */ $GameID,
                /* VT_BSTR [8] [in] */ $GameName,
                /* VT_BSTR [8] [in] */ $Tps,
                /* VT_BSTR [8] [in] */ $GameLang,
                /* VT_BSTR [8] [in] */ $CDPath,
                /* VT_BSTR [8] [in] */ $StoreFront 
                )
        {
                /* method InstallFromCD */
        }
        /* DISPID=12 */
        /* VT_UI4 [19] */
        function KillProcess(
                /* VT_BSTR [8] [in] */ $__MIDL_0033 
                )
        {
                /* method KillProcess */
        }
        /* DISPID=13 */
        function RefreshAddRemovePrograms(
                )
        {
                /* method RefreshAddRemovePrograms */
        }
        /* DISPID=14 */
        function ShellExec(
                /* VT_BSTR [8] [in] */ $FilePath,
                /* VT_BSTR [8] [in] */ $Params 
                )
        {
                /* method ShellExec */
        }
        /* DISPID=15 */
        function ShellExecRunAs(
                /* VT_BSTR [8] [in] */ $FilePath,
                /* VT_BSTR [8] [in] */ $Params 
                )
        {
                /* method ShellExecRunAs */
        }
        /* DISPID=16 */
        /* VT_BSTR [8] */
        function PlatformInfo(
                )
        {
                /* method PlatformInfo */
        }
        /* DISPID=17 */
        /* VT_BSTR [8] */
        function GetAvailableDrive(
                /* VT_INT [22] [in] */ $reqSpace 
                )
        {
                /* method GetAvailableDrive */
        }
        /* DISPID=18 */
        /* VT_BOOL [11] */
        function InitializeStamp(
                /* VT_BSTR [8] [in] */ $exeName,
                /* VT_INT [22] [in] */ $offset 
                )
        {
                /* method InitializeStamp */
        }
        /* DISPID=19 */
        /* VT_BSTR [8] */
        function GetContentID(
                )
        {
                /* method GetContentID */
        }
        /* DISPID=20 */
        /* VT_BSTR [8] */
        function GetTrackingID(
                )
        {
                /* method GetTrackingID */
        }
        /* DISPID=21 */
        /* VT_BSTR [8] */
        function GetAffiliate(
                )
        {
                /* method GetAffiliate */
        }
        /* DISPID=22 */
        /* VT_BSTR [8] */
        function GetCurrency(
                )
        {
                /* method GetCurrency */
        }
        /* DISPID=23 */
        /* VT_BSTR [8] */
        function GetPrice(
                )
        {
                /* method GetPrice */
        }
        /* DISPID=24 */
        /* VT_BSTR [8] */
        function GetTimestamp(
                )
        {
                /* method GetTimestamp */
        }
        /* DISPID=25 */
        /* VT_BSTR [8] */
        function GetOTP(
                )
        {
                /* method GetOTP */
        }
        /* DISPID=26 */
        /* VT_BOOL [11] */
        function CopyDocument(
                /* VT_BSTR [8] [in] */ $src,
                /* VT_BSTR [8] [in] */ $dest 
                )
        {
                /* method CopyDocument */
        }
        /* DISPID=27 */
        function InstallerToForeground(
                )
        {
                /* method InstallerToForeground */
        }
        /* DISPID=28 */
        function MonitorLicenseFolder(
                )
        {
                /* method MonitorLicenseFolder */
        }
        /* DISPID=29 */
        function ShutdownLicenseFolderMonitor(
                )
        {
                /* method ShutdownLicenseFolderMonitor */
        }
        /* DISPID=30 */
        /* VT_BSTR [8] */
        function GetFolderPath(
                /* VT_UI4 [19] [in] */ $__MIDL_0037 
                )
        {
                /* method GetFolderPath */
        }
}

binary info:
> lm -vm
    Image path: C:\Program Files\RealArcade\Installer\bin\InstallerDlg.dll
    Image name: InstallerDlg.dll
    Timestamp:        Mon Mar 14 14:22:44 2011 (4D7E6B04)
    CheckSum:         00000000
    ImageSize:        00064000
    File version:     2.6.0.445
    Product version:  2.6.0.445
    File flags:       0 (Mask 3F)
    File OS:          4 Unknown Win32
    File type:        2.0 Dll
    File date:        00000000.00000000
    Translations:     0409.04b0
    ProductName:      InstallerDlg Module
    InternalName:     InstallerDlg
    OriginalFilename: InstallerDlg.dll
    ProductVersion:   2.6.0.445
    FileVersion:      2.6.0.445
    FileDescription:  InstallerDlg Module
    LegalCopyright:   Copyright 2010

POC:

pocs availiable here: http://retrogod.altervista.org/9sg_realgames_i.html