RC4 SSL Vulnerability

The RC4 SSL vulnerability refers to security weaknesses in the RC4 stream cipher when it is used in SSL/TLS protocols for encrypting web traffic. RC4 (Rivest Cipher 4) was once widely used due to its simplicity and speed, but over time, several vulnerabilities were discovered, making it insecure for use in SSL/TLS. 

How to Fix RC4 SSL  Vulnerability:

1. Disable RC4 Cipher Suites:

• Access your server's SSL/TLS configuration file. This file's location and nature will depend on the server software you are using (e.g., Apache, Nginx, IIS).
• Explicitly disable all RC4 cipher suites in the configuration. This involves modifying the cipher suite configuration line to exclude any suites that use RC4. 

2. Enforce TLS 1.2 or Higher:

Disable older protocols like SSL 3.0, TLS 1.0, and TLS 1.1. Enforce the use of TLS 1.2 or higher, as these versions do not include RC4 and have improved security.