An open source and freeware development outfit, Openwares.org, has released an open source patch for an IE spoofing vulnerability. Why, we don"t know, but Microsoft, given its attitude to open source licensing models, is unlikely to smile on the project.
Microsoft itself has however only warned of the vulnerability, and has not issued its own patch yet, so Openwares has the field to itself for the moment. The patch is available here, along with a couple of demonstrations of the vulnerability.
Presumably the application of unauthorised open source patches to your system will have an adverse effect on any support arrangements you might have with Microsoft, and may even be interpreted as a breach of your licence agreement. But on the other hand, Microsoft has been going on about how it"s been learning from open source models, so maybe it will interpret this as a sign that it"s getting the message across at last. Yeah, right...