Managing CA certificates - Port Swigger
Summary: PortSwigger's documentation states that each installation of Burp generates its own CA certificate, which Proxy listeners use to negotiate TLS connections, and that users can export, import, or regenerate these certificates. It warns that disclosing the private key to an untrusted party could let an attacker intercept the browser's HTTPS traffic even when Burp is not in use, and it provides OpenSSL commands to create a self-signed certificate with an unencrypted 2048-bit RSA key valid for 730 days.
Key Takeaway: A Burp CA private key in the wrong hands lets an attacker intercept HTTPS traffic from affected browsers even after Burp is closed, so the certificate and key are worth treating as sensitive material rather than a routine testing artifact.
Read the original at PortSwigger Research ↗
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