Ietf Internet Key Exchange vulnerabilities

CVE-2018-5389 [MEDIUM] CWE-521 CVE-2018-5389: The Internet Key Exchange v1 main mode is vulnerable to offline dictionary or brute force attacks. R The Internet Key Exchange v1 main mode is vulnerable to offline dictionary or brute force attacks. Reusing a key pair across different versions and modes of IKE could lead to cross-protocol authentication bypasses. It is well known, that the aggressive mode of IKEv1 PSK is vulnerable to offline dictionary or brute force attacks. For the main mode, how