Found new vulnerability in the Internet Explorer / how to protect

Found new vulnerability in Microsoft Windows, which can be exploited by malicious people to compromise a user’s system.

The vulnerability is caused due to an error in the Windows Shell and is exposed via the “setSlice()” method in the WebViewFolderIcon ActiveX control (webvw.dll). This can e.g. be exploited via Internet Explorer by a malicious website to corrupt memory by passing specially crafted arguments to the “setSlice()” method.

Successful exploitation allows execution of arbitrary code.

For protect your PC you can make next:

You can disable attempts to instantiate this ActiveX control in Internet Explorer by setting the kill bit for the control in the registry.

To set the kill bit for a CLSID with a value of {e5df9d10-3b52-11d1-83e8-00a0c90dc849}, paste the following text in a text editor such as Notepad. Then, save the file by using the .reg file name extension.

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{e5df9d10-3b52-11d1-83e8-00a0c90dc849}] “Compatibility Flags”=dword:00000400

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{844F4806-E8A8-11d2-9652-00C04FC30871}] “Compatibility Flags”=dword:00000400

You can apply this .reg file to individual systems by double-clicking it.

You can help protect against this vulnerability by changing your Internet Explorer settings to prompt before running ActiveX controls. To do this, follow these steps:

1. In Internet Explorer, click Internet Options on the Tools menu.
2. Click the Security tab.
3. Click Internet, and then click Custom Level.
4. Under Settings, in the ActiveX controls and plug-ins section, under Run ActiveX controls and plug-ins, click Prompt or Disable, and then click OK.
5. Click Local intranet, and then click Custom Level.
6. Under Settings, in the ActiveX controls and plug-ins section, under Run ActiveX controls and plug-ins, click Prompt or Disable, and then click OK.
7. Click OK two times to return to Internet Explorer.

You can help protect against this vulnerability by changing your settings for the Internet security zone to prompt before running ActiveX controls. You can do this by setting your browser security to High. To raise the browsing security level in Microsoft Internet Explorer, follow these steps:

1. On the Internet Explorer Tools menu, click Internet Options.
2. In the Internet Options dialog box, click the Security tab, and then click the Internet icon.
3. Under Security level for this zone, move the slider to High. This sets the security level for all Web sites you visit to High.

Read more: Vulnerability in Windows Shell Could Allow Remote Code Execution, WebViewFolderIcon setSlice, Microsoft Windows Shell Code Execution Vulnerability