Insecure TLS_KRB5_WITH_RC4_128_MD5
- IANA name:
- TLS_KRB5_WITH_RC4_128_MD5
- Hex code:
- 0x00, 0x24
- TLS Version(s):
- TLS1.0, TLS1.1, TLS1.2, TLS1.3
- Protocol:
- Transport Layer Security (TLS)
- Key Exchange:
- Kerberos 5 (KRB5)
- Authentication:
- Kerberos 5 (KRB5)
- Encryption:
- Rivest Cipher 4 with 128bit key (RC4 128)
- Hash:
- HMAC Message Digest 5 (MD5)
- Included in RFC:
- Machine-readable:
- application/json
Non-ephemeral Key Exchange:
This key exchange algorithm does not support Perfect Forward Secrecy (PFS) which is recommended, so attackers cannot decrypt the complete communication stream.
Rivest Cipher 4:
IETF has officially prohibited RC4 for use in TLS in RFC 7465. Therefore, it can be considered insecure.
Message Digest 5:
The Message Digest 5 algorithm suffers form multiple vulnerabilities and is considered insecure.