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Received fatal alert certificate required

Leo | Last updated: May 07, 2022 08:50PM UTC

Hello, I am testing an API that requires a CA certificate and a Client certificate (Host, CRT file & KEY file) to be configured for you to access it. I am able to do it with Postman but when I proxy the traffic via Burp Suite, I get a [Received fatal alert certificate required] error. Is there a solution to this? Kind regards

Michelle, PortSwigger Agent | Last updated: May 09, 2022 08:51AM UTC

Thanks for your message. Can you email support@portswigger.net with a few more details of your setup, please? Are you using a PKCS#12 or PKCS#11 client certificate and have you imported this in Burp under User Options -> TLS -> Client TLS certificates? What setup are you using in Postman?

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