[Bug 236610] [NEW] Firefox behaviour with unknown certificate authorities can block navigation

Alexander Sack asac at jwsdot.com
Tue Jun 3 00:02:49 UTC 2008

On Sun, Jun 01, 2008 at 09:06:34PM -0000, Miguel Diago wrote:
> Public bug reported:
> Binary package hint: firefox-3.0
> When you access a secure webpage whose certificate has been signed by an
> unknown authority, you are redirected to a warning message and taken out
> of the website. This can be a problem when there are only some parts of
> the webpage that are secured, like iframes. In such cases, the alert
> about using an untrusted certificate can be bigger than the iframe
> itself and so the user can't click the link to add an exception and
> continue browsing the website.
> For example, to reproduce this:
> 1. Go to http://www.renfe.es/
> 2. In the left-hand column, in the "Compra de billetes" box, select one random element from the first roll menu.
> 3. See how the box becomes "secure" and a cropped security alert is shown in which the bottom link to add an exception can't be accessed.

Interesting point. Reed, are you aware if this was also raised

 affects firefox
 affects xulrunner

 affects ubuntu/firefox-3.0
 status incomplete
 affects ubuntu/xulrunner-1.9
 status incomplete

 - Alexander

** Also affects: firefox
   Importance: Undecided
       Status: New

** Also affects: xulrunner
   Importance: Undecided
       Status: New

** Changed in: firefox-3.0 (Ubuntu)
       Status: Confirmed => Incomplete

** Also affects: xulrunner-1.9 (Ubuntu)
   Importance: Undecided
       Status: Incomplete

Firefox 'bad certificate' warning blocks navigation with small secured frames
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