05-20-2015 11:38 AM
I'm having SSL decryption issues with the latest versions of Firefox.
In Firefox i get following error when visiting a https site:
Secure Connection Failed
An error occurred during a connection to live.paloaltonetworks.com. security library: improperly formatted DER-encoded message. (Error code: sec_error_bad_der)
The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
Please contact the web site owners to inform them of this problem.
Seems to be related to how Firefox handles certificates, requiring them to be more secure (number of bits and encryption algorithm), but I haven't found the exact requirements yet.
I can generate and deploy a new certificate, but I'm not sure what will give me one Firefox will accept.
Any thoughts ?
07-06-2015 05:38 AM
how is your decryption certificate encrypted ?
edit: let me clarify
I've been told since 6.1.4 you can encrypt the cert with AES256 and that should solve the Firefox issue.
But you'd have to generate a new cert of course.
01-29-2016 06:44 AM
Has this been verified?
02-22-2016 06:21 AM
I've been on 6.1.7 for a while now. Been testing internally with newly generated certificate. So far I have not encountered the issue anymore in FF.
But PA support also said another fix was made in 6.1.8, issue id 81830.
I'll upgrade to 6.1.9 soon. If problem stays away, I'll re-enable decryption for our users.
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