F5 Networks BIG-IP : OpenSSL vulnerability (K21665601)
Medium Nessus Plugin ID 118642
SynopsisThe remote device is missing a vendor-supplied security patch.
DescriptionDuring key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h).
Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o). (CVE-2018-0732)
A remote attacker may be able to cause a denial-of-service (DoS) attack.
SolutionUpgrade to one of the non-vulnerable versions listed in the F5 Solution K21665601.