Well, according to (also unsourced, so no clue what the "real" story is) comments on the sister submisson [1] it is because LibreSSL doesn't want to take part in the embargo on reported vulnerabilities.
That's because they patch within a couple of days and don't want their systems unpatched for long (30 to 60 days!) when there is a known issue out in the wild. The flaws tend to get leaked, the temptation is big because there are huge money incentives.
I bet if the embargo were for 5 days they would reconsider. But good luck with that with members like Microsoft, Cisco, Oracle, which a terrible reputation of postponing things the maximum possible.
> Please note that the maximum acceptable embargo period for issues disclosed to these lists is 14 to 19 days .... In fact, embargo periods shorter than 7 days are preferable.
And a lot of those vendors just never do. And a lot of users never update anyway. There's no reason to keep my enterprise servers insecure because Johnny Linksys doesn't have a patch that he's never going to install anyway.
OpenBSD is making the gamble that either a) they can pressure the adults doing coordinated disclosure to stop doing that via their excellent people skills, or b) that they are so awesome that they can find the problems before everyone else.
NB: I love OpenBSD from a security POV, but that doesn't mean what the leaders of the project do is always correct for security.
We mostly don't know if it is already "in the wild" or not, if it will be found independently during the embargo period, if it will leak out of one of the organizations "in the know", ...
Didn't people find traces of hearthbleed attacks that happened months before it was published?
There are good arguments for very short embargo periods, especially if you mostly care about the security of your users. (of course, in a perfect world every vendor would be willing/able to release patches after 24 h or so, and it wouldn't matter, but we don't have one of those...)
That is true. OpenBSD/Theo refuses to take part in embargos, which means they don't get a heads up. Don't have a citation right now, but Theo said that publicly when Hardbleed or so happened.
[1] https://news.ycombinator.com/item?id=9216815