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SM can't add certificate exception

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Peter Creasey

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Posts: 583
Joined: October 26th, 2007, 2:32 pm
Location: Texas

Post Posted September 12th, 2019, 1:15 pm

With the last two versions of SM 2.49, if a site is encountered with an invalid certificate, there is not an option to consider the site as an exception; thus, the site cannot be accessed.

Is there some way to get around this problem if a site is blocked due to an invalid certificate?

Thanks.
. . . . . . . . . . Pete

TPR75
 
Posts: 796
Joined: July 25th, 2011, 8:11 am
Location: Poland

Post Posted September 12th, 2019, 2:12 pm

Peter Creasey wrote:Is there some way to get around this problem if a site is blocked due to an invalid certificate?


Yes, it is.

Menu -> Edit -> Preferences -> Privacy & Security -> in field "Manage Certificates" press button "Manage Certificates"

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Switch to "Servers" tab and press "Add Exception..." button

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In window "Add Security Exception" type or paste URL in "Location" and press "Get Certificate" button

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If/When certificate will be successfully downloaded then you can view details ("View..." button), unmark "Permanently store this exception" (due to security reasons it is recommended to not store outdated/bad certificates) and to confirm such certificate user must press "Confirm Security Exception" button

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When exception will be added then user should see it:

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BTW
"Tymczasowy" means "Temporary".
"Na stałe" means "Permanent".

I'm using SeaMonkey 2.49.5 with default Polish language. "Test" profile has en-US language pack (for 2.49.5). I don't know why there are Polish words. But looks like date was taken from OS settings because SeaMonkey 2.53 (Build identifier: 20190911140005) from WG9S website has Polish date too.

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:-k

TPR75
 
Posts: 796
Joined: July 25th, 2011, 8:11 am
Location: Poland

Post Posted September 12th, 2019, 3:01 pm

... but it doesn't work for https://www.seamonkey.-project.org/! ](*,)

Peter Creasey

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Posts: 583
Joined: October 26th, 2007, 2:32 pm
Location: Texas

Post Posted September 12th, 2019, 5:58 pm

No regrets as there is no way I would remember that whole sequence if it did work.
. . . . . . . . . . Pete

LordOfTheBored
 
Posts: 296
Joined: December 7th, 2005, 8:36 pm

Post Posted September 12th, 2019, 10:01 pm

Peter Creasey wrote:With the last two versions of SM 2.49, if a site is encountered with an invalid certificate, there is not an option to consider the site as an exception; thus, the site cannot be accessed.

Is there some way to get around this problem if a site is blocked due to an invalid certificate?

Thanks.

It actually depends on the site's security settings whether you can make an exception or not.

In seamonkey-project.org's case, if it is prepended with a www., "this site uses HTTP Strict Transport Security (HSTS) to specify that SeaMonkey only connect to it securely. As a result, it is not possible to add an exception for this certificate."

If you remove the www., however, it allows you to add an exception.
...
This is actually weird. Why is the www. domain set up with different security than the non-www. domain?

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