In BIG-IP Versions 17.0.x before 17.0.0.1, 16.1.x before 16.1.3.1, 15.1.x before 15.1.6.1, 14.1.x before 14.1.5.1, and all versions of 13.1.x, certain iRules commands may allow an attacker to bypass the access control restrictions for a self IP address, regardless of the port lockdown settings. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
In BIG-IP Versions 17.0.x before 17.0.0.1, 16.1.x before 16.1.3.1, 15.1.x before 15.1.6.1, 14.1.x before 14.1.5.1, and all versions of 13.1.x, when an LTM monitor or APM SSO is configured on a virtual server, and NTLM challenge-response is in use, undisclosed traffic can cause a buffer over-read. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
The Diffie-Hellman Key Agreement Protocol allows remote attackers (from the client side) to send arbitrary numbers that are actually not public keys, and trigger expensive server-side DHE modular-exponentiation calculations, aka a D(HE)at or D(HE)ater attack. The client needs very little CPU resources and network bandwidth. The attack may be more disruptive in cases where a client can require a server to select its largest supported key size. The basic attack scenario is that the client must claim that it can only communicate with DHE, and the server must be configured to allow DHE.