Earlier this month, Microsoft published KB943521. This article acknowledged that third party software had to validate URLs before passing them to Internet Explorer, as Internet Explorer will not validate them. Today, Microsoft published an update to the advisory, suggesting limited exploitation of this vulnerability.
Microsoft does not appear to plan to fix the issue in Internet Explorer. Instead, it asks vendors releasing tools that pass URLs to Internet Explorer to validate them.
Thanks to Chris and Gilbert to alert us of the update! Let us know if you see an exploit in the wild, or if you encounter any 3rd party applications which are not protecting Internet Explorer.
I will be teaching next: Defending Web Applications Security Essentials - SANS San Francisco Spring 2020
Oct 26th 2007
1 decade ago