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Created attachment 1173543 [details]
screenshot of error

Description of problem:

I've run in a weird issue with Firefox from rhel7.2 repositories (tested versions 38.7.0 to 45.2.0) where FF is unable to verify some certificates. Specifically https://code.jquery.com/ certificate (verified by GlobalSign nv-sa), see attached image.

The same site is verified by same versions of vanilla Firefox packages (running on rhel7.2) and openssl s_client.

How reproducible:

Go to https://code.jquery.com with Firefox 45.2.0-1 on RHEL7.2

Actual results:

Page does not open / no message is displayed in Firefox. Only message is seen by developer tools -> network tab which displays "The connection used to fetch this resource is insecure."

Additional info:

Using TLS 1.1 (setting security.tls.version.max to 2 in Firefox config) the page opens correctly. I've also attached to files produced by ssltap with TLS versions 1.1 & 1.2. 

The bug seems similar to bug #1234693 ( https://bugzilla.redhat.com/show_bug.cgi?id=1234693 ) which was resolved by RHSA-2015:1185-1 but I'm encountering this problem with firefox-45.2.0-1.el7_2.x86_64 and nss-3.21.0-9.el7_2.x86_64 today.

Created attachment 1173544 [details]
ssltap with tls 1.1

Created attachment 1173545 [details]
ssltap with tls 1.2

Kai, any idea here? Thanks.

(In reply to Martin Stransky from comment #4)
> Kai, any idea here? Thanks.

This is apparently a duplicate of bug 1343202, both bugs talk about the same website.

*** This bug has been marked as a duplicate of bug 1343202 ***