Hi all, In response to statements found at http://news.com.com/Exploit+code+makes+IE+flaw+more+dangerous/2100-1002_3-5439370.html "Microsoft is concerned that this new report of a vulnerability in Internet Explorer was not disclosed responsibly, potentially putting computer users at risk," the company said in the statement. "We believe the commonly accepted practice of reporting vulnerabilities directly to a vendor serves everyone's best interests, by helping to ensure that customers receive comprehensive, high-quality updates for security vulnerabilities with no exposure to malicious attackers while the patch is being developed." About "responsible disclosure": The origional vulnerability was found and disclosed by ned. As far as I know, ned only knew he had found something that crashed MSIE: a bug. Microsofts concerns would suggest two options: 1) They expect everybody who finds a bug to investigate the issue and act according to the impact the problem might have on security. I do not think this is likely to happen unless everybody is required to be a 1337 ubergeek before they are allowed to use MS software. It's a nice goal to aim for, but not very realistic. 2) You can not talk about your software crashing, ever, unless it's to the vendor: You might have stumbled upon a vulnerability and if a malicous attacker hears about it, he might use it. About "commonly accepted practice of reporting vulnerabilities directly to a vendor": When did they arrest all the black-hats ? About "no exposure to malicious attackers while the patch is being developed": Allthough I believe in responsible disclosure of vulnerabilities, it DOES NOT prevent malicious attackers to discover and exploit the same vulnerability while a patch is being developed. Resonsible disclosure decreases the chance of somebody hacking your system while you are vulnerable, it doesn't make it zero. Anybody who understands basic bufferoverflow techniques will be able to write an exploit for this vulnerability. I did it in a few minutes, so how hard can it be ? I do not feel I disclosed anything new, I just saved a lot of people the trouble of writing it themselves. The vulnerability has been rated "extremely critical" since I released the exploit. I say it was allready "extremely critical" before ned disclosed his information, only nobody knew it was there. It was "extremely critical" when ned did, but only a few could grasp that. Then I explained it was an easy to exploit bufferoverflow, it still did not get much attention. Writing the exploit hasn't changed the flaw or it's impact, it just attracked the right amount of attention to the problem. Cheers, SkyLined