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Exported certificate mismatch with this from proxy connection

ThisOneWithoutSSL | Last updated: Sep 13, 2019 10:35AM UTC

Hi, I regenerate certificate on burp, restart it, export from burp, import to firefox and passing requests thru burp then I have "MOZILLA_PKIX_ERROR_MITM_DETECTED" where after checking serial number and SHA1 between both certificates (this one from "check certificate" when error occured and this one imported previously) I can see that they are different! What is happening? Im on Windows 10, working on firefox with ProxyFoxy addon. Burp Suite Proffesional v2.1.03

Mike, PortSwigger Agent | Last updated: Sep 13, 2019 12:53PM UTC

Hi, have you tried accessing this website without ProxyFoxy? it might be interfering and causing this exception.

Burp User | Last updated: Sep 13, 2019 01:05PM UTC

Hey! It is happening at every page, of course I tried with and without proxy configuration. Whenever I turn off foxyproxy - all back to normal.

Burp User | Last updated: Sep 13, 2019 01:11PM UTC

Mike Eaton - you have right! Now I get it! Now I'm able to run sites thru burp suite without foxyproxy addon but with strictly configured proxy options inside firefox and it work like a charm! Thank you!

Mike, PortSwigger Agent | Last updated: Sep 13, 2019 02:06PM UTC

I'm glad your issue has been resolved, please let us know if you need any further assistance.

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