Updated nmap packages fix security vulnerability:
nse_libssh2.cc in Nmap 7.70 is subject to a denial of service condition due to a double free when an SSH connection fails, as demonstrated by a leading \n character to ssh-brute.nse or ssh-auth-methods.nse (CVE-2017-18594).
Also, when a server forced a protocol and did not return TLS ALPN extension, this caused an infinite loop.