Jeff Dwoskin and Alex Halderman have developed a simple tool that can immunize a Windows system against the dangerous CodeSupport ActiveX control that we have written about over the past few days. The immunization tool should disable CodeSupport if it is already on your system, and it should prevent any future reinstallation or reactivation of CodeSupport.
You can test whether the vulnerable CodeSupport component is installed on your system using our CodeSupport detector web page. If you are infected, we strongly recommend that you run our immunization tool. Even if you are not infected, you can apply our patch to prevent the flawed control from being installed in the future.
To install the tool, download this file to a temporary location, then double click on the file’s icon in Windows. (Windows may ask you to confirm that you wish to add the information in the file to the system registry–choose “Yes.”) After the tool has been applied, you may delete the file. The tool will take effect as soon as you close and restart Internet Explorer.
The tool works by putting an entry into the Windows registry that tells Internet Explorer not to activate any ActiveX control that uses the unique identifier (or “classid”) associated with CodeSupport. This registry area is described in a Microsoft KnowledgeBase article.
Sony has modified their uninstaller sequence so that users who want to start the uninstallation process will not download CodeSupport. That’s good. But unfortunately the CodeSupport component is still up on the company’s web site, so users who were already partway through the uninstall process might still download CodeSupport. That’s not good; but it’s easy to fix. Let’s hope Sony fixes it.
Meanwhile, the company is reportedly working to develop a safe uninstaller. We’ll let you know when they release an uninstaller, and we’ll tell you what we think of it.