Mozilla Rolls Back Firefox 37's Opportunistic Encryption Over Security Issue

darthcamaro writes: Barely a week ago, Mozilla released Firefox 37, which had a key new feature called opportunistic encryption. The basic idea is that it will do some baseline encryption for data that would have otherwise been sent by a user via clear text. Unfortunately, Mozilla has already issued Firefox 37.0.1, which removes opportunistic encryption. A security vulnerability was reported in the underlying Alternative Services capability that helps to enable opportunistic encryption. "If an Alt-Svc header is specified in the HTTP/2 response, SSL certificate verification can be bypassed for the specified alternate server. As a result of this, warnings of invalid SSL certificates will not be displayed and an attacker could potentially impersonate another site through a man-in-the-middle, replacing the original certificate with their own." They plan to re-enable opportunistic encryption when this issue is investigated and fixed.

Comments

Well done Mozilla.

[Anonymous Coward]

Roll out a vulnerable "security" feature just long enough to get exploited?

Mission Complete!

Let us know how the NSA debriefing goes.