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Burp Suite javax.net.ssl.SSLException: Tag mismatch!

Mark | Last updated: May 08, 2017 03:57PM UTC

I have Burp Suite Professional v1.7.22 running on macOS Sierra 10.12.4 with Java: 1.8.0_131-b11 And I'm getting an error trying to establish SSL connections: In the alerts tab: Proxy - javax.net.ssl.SSLException: Tag mismatch! Proxy - Tag mismatch! Anybody ever experienced this before? I've freshly reinstalled java but with no effect

PortSwigger Agent | Last updated: May 09, 2017 08:25AM UTC

Is this affecting connections only to one server, or generally?

Burp User | Last updated: May 09, 2017 09:31AM UTC

Very Few Servers

Burp User | Last updated: May 09, 2017 10:09AM UTC

Turns out it was a firewall trying to redirect to a authentication server, which was causing the SSL Mismatch exception.

PortSwigger Agent | Last updated: May 09, 2017 12:52PM UTC

This user's issue was resolved by using Oracle Java instead of OpenJDK.

Burp User | Last updated: Mar 05, 2018 07:18AM UTC