Insecure TLS_ECDH_anon_WITH_NULL_SHA
- IANA name:
- TLS_ECDH_anon_WITH_NULL_SHA
- OpenSSL name:
- AECDH-NULL-SHA
- GnuTLS name:
- TLS_ECDH_ANON_NULL_SHA1
- Hex code:
- 0xC0, 0x15
- TLS Version(s):
- TLS1.0, TLS1.1, TLS1.2, TLS1.3
- Protocol:
- Transport Layer Security (TLS)
- Key Exchange:
- Elliptic Curve Diffie-Hellman (ECDH)
- Authentication:
- Anonymous (anon)
- Encryption:
- NULL Encryption (NULL)
- Hash:
- HMAC Secure Hash Algorithm 1 (SHA)
- 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.
Anonymous key exchange:
Anonymous key exchanges are generally vulnerable to Man in the Middle attacks.
NULL Encryption:
This cipher suite uses no encryption at all. Hence, it does not provide confidentiality protection.
Secure Hash Algorithm 1:
The Secure Hash Algorithm 1 has been proven to be insecure as of 2017 (see shattered.io).