Help Center/ Web Application Firewall/ Troubleshooting/ Troubleshooting Certificate and Cipher Suite Issues/ Why Is the Bar Mitzvah Attack on SSL/TLS Detected?

Updated on 2025-04-25 GMT+08:00

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Why Is the Bar Mitzvah Attack on SSL/TLS Detected?

The Bar Mitzvah attack is a cryptographic attack targeting SSL/TLS protocols. The attack exploits a vulnerability in the RC4 cryptographic algorithm. This vulnerability can disclose ciphertext in SSL/TLS encrypted traffic in some cases, such as passwords, credit card data, or other privacy data, to hackers.

Solution

To solve this problem, you can set the minimum TLS version to TLS v1.2 and cipher suite to cipher suite 2. For details, see Configuring PCI DSS/3DS Certification Check and TLS Version.

Parent topic: Troubleshooting Certificate and Cipher Suite Issues

Previous topic: What Do I Do If the Protocol Is Not Supported and the Client and Server Do Not Support Common SSL Protocol Versions or Cipher Suites?

Next topic: Troubleshooting Traffic Forwarding Exceptions

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