如何解決 SSH Server 使用了不安全的加密演算法: ARCFOUR、CBC、HMAC-MD5、HMAC-RIPEMD160
弱點掃瞄
弱點 1: SSH Supports Weak Cipher
The SSH server is configured to support either Arcfour or Cipher Block Chaining (CBC) mode cipher algorithms. SSH can be configured to use Counter (CTR) mode encryption instead of CBC. The use of Arcfour algorithms should be disabled.
- Severity: Medium
- Risk: A weak cipher has been detected.
- Recommendation: Configure the SSH server to disable Arcfour and CBC ciphers.
弱點 2: SSH Supports Weak MAC
The SSH server is configured to support MD5 algorithm. The cryptographic strength depends upon the size of the key and algorithm that is used. A Modern MAC algorithms such as SHA1 or SHA2 should be used instead.
- Severity: Medium
- Risk: A weak Message Authentication Code (MAC) algorithm has been detected.
- Recommendation: Configure the SSH server to disable the use of MD5.
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