[basa]

The plot thickens .. and the hole gets deeper !!

Sonyâ₠¬Ã¢â€žÂ¢s Web-Based Uninstaller Opens a Big Security Hole; Sony to Recall Discs

Over the weekend a Finish researcher named Muzzy noticed a potential vulnerability in the web-based uninstaller that Sony offers to users who want to remove the First4Internet XCP copy protection software.

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The consequences of the flaw are severe. It allows any web page you visit to download, install, and run any code it likes on your computer. Any web page can seize control of your computer; then it can do anything it likes. Thatâ₠¬Ã¢â€žÂ¢s about as serious as a security flaw can get.

The root of the problem is a serious design flaw in Sonyââ‚ ¬Ã¢â€žÂ¢s web-based uninstaller. When you first fill out Sonyââ‚ ¬Ã¢â€žÂ¢s form to request a copy of the uninstaller, the request form downloads and installs a program †“ an ActiveX control created by the DRM vendor, First4Internet †“ called CodeSupport. CodeSupport remains on your system after you leave Sonyââ‚ ¬Ã¢â€žÂ¢s site, and it is marked as safe for scripting, so any web page can ask CodeSupport to do things. One thing CodeSupport can be told to do is download and install code from an Internet site. Unfortunately, CodeSupport doesnââ‚ƚ¬Ã¢â€žÂ¢t verify that the downloaded code actually came from Sony or First4Internet. This means any web page can make CodeSupport download and install code from any URL without asking the userââ‚ ¬Ã¢â€žÂ¢s permission.

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