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Weak TLS_RSA_WITH_AES_128_CCM
- IANA name:
- TLS_RSA_WITH_AES_128_CCM
- OpenSSL name:
- AES128-CCM
- GnuTLS name:
- TLS_RSA_AES_128_CCM
- Hex code:
- 0xC0, 0x9C
- TLS Version(s):
- TLS1.2, TLS1.3
- Protocol:
- Transport Layer Security (TLS)
- Key Exchange:
- Rivest Shamir Adleman algorithm (RSA)
- Authentication:
- Rivest Shamir Adleman algorithm (RSA)
- Encryption:
- AEAD Advanced Encryption Standard with 128bit key in Counter with CBC-MAC mode (AES 128 CCM)
- Hash:
- Secure Hash Algorithm 256 (SHA256)
- 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.
RSA Authentication:
There are reports that servers using the RSA authentication algorithm with keys longer than 3072-bit may experience heavy performance issues leading to connection timeouts and even service unavailability if many clients open simultaneous connections.