SSH Diffie-Hellman Modulus <= 1024 Bits (Logjam)
Low Nessus Plugin ID 86328
SynopsisThe remote host allows SSH connections with one or more Diffie-Hellman moduli less than or equal to 1024 bits.
DescriptionThe remote SSH server allows connections with one or more Diffie-Hellman moduli less than or equal to 1024 bits. Through cryptanalysis, a third party can find the shared secret in a short amount of time (depending on modulus size and attacker resources).
This allows an attacker to recover the plaintext or potentially violate the integrity of connections.
SolutionReconfigure the service to use a unique Diffie-Hellman moduli of 2048 bits or greater.