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Certified Ethical Hacker (CEH) Practice Question

While enumerating a client's HTTPS service with Nmap and the --script ssl-enum-ciphers option, you observe that one of the advertised suites is TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xC014). Based on its components, which statement best describes this suite's security properties and the implication for your penetration-test report?

  • It lacks forward secrecy because the key exchange is based on the server's static RSA key; recommend disabling the suite.

  • It provides perfect forward secrecy through elliptic-curve ephemeral Diffie-Hellman and is generally considered a strong suite, so no finding is required.

  • It employs the RC4 stream cipher, which is prohibited by current TLS guidance, so report it as a high-risk issue.

  • It is weak because it relies on DES for bulk encryption; you should recommend immediate removal.

Certified Ethical Hacker (CEH)
Cryptography
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