Comment Typical behavior from Microsoft (Score 2) 31
This has been typical behavior for large companies when dealing with vulnerability reports for decades. Report one, they treat you as the problem. They'll try to ignore it, consider it "not exploitable", delay and deflect as long as they can get away with it, anything but address the vulnerability. And they'll never tell anyone the vulnerability exists. This only changes when they have no choice but to admit to the problem and fix it, usually when the vulnerability is being publicly exploited. They push "responsible disclosure" because it includes the reporter not making the vulnerability public until the company has a fix, which allows them to stall disclosure as long as they want.
It used to be enough to just include a reasonable deadline when reporting it, after which the reporter would make it public if the company hadn't taken some action on it. Then companies started threatening and then taking legal action against the reporter as soon as they reported the problem, playing the deadline up as "blackmail".
So, what do you do when faced with this? The only reasonable response is to skip the company entirely and make the details public immediately. You're going to be facing retaliation from the company either way, this way the public isn't vulnerable for an extended time. And yes you include details on how to exploit the vulnerability, ideally via working code, so researchers other than the company can confirm it's a real vulnerability that's actually exploitable without having to take your word for it. No, that doesn't give the bad guys anything because remember the working assumption for vulnerabilities: if a good guy has found it, the bad guys already know about it and are using it. Remember that when the company whines.