1303286 - "Restore default settings" SSL pref reset button doesn't appear for sites that trigger the "reset while the page was loading" error page.

Status: NEW

(Firefox :: Security, defect, P3)

Description

[:Cykesiopka]

Bug 1252068 added functionality to reset key SSL prefs to their defaults when encountering an error likely caused by a changed pref.
The patch there handled the "The connection to <site> was interrupted while the page was loading." case, triggered e.g. by visiting a site that doesn't react well to a TLS version number that's too low.

While this catches some sites, it doesn't work for others that fail in a way that triggers the "The connection to the server was reset while the page was loading." text.

STR:
1. In a clean profile on any build that includes the changes for Bug 1252068, set the "security.tls.version.max" pref to 1.
3. Visit https://www.biltong.co.uk/

ER:
1. The "Secure Connection Failed" page should be encountered.
   The text below should mention "The connection to the server was reset while the page was loading."
2. There should be a button that's labelled "Restore default settings"

AR:
1. As ER.
2. There is no button.

Note that this bug should be fixed in a way that avoids another instance of Bug 1303284.

Comment 1

[Erin Lancaster [:elan]]

Platform sec might also be able to fix this.