A technique on Windows that is less known is how to do basic port-proxying.
Proxying ports is useful when a process binds on one (maybe only the local) interface and you want to expose that endpoint on another network interface.
Let’s say you have an existing process that listens only on the loopback interface, and you want to expose it remotely. Or there are two network interfaces and you want expose traffic from one to the other (maybe some evil persistence for port 3389) - or think of basic pivoting.
Today we released an update for CVE-2020-1350, a Critical Remote Code Execution (RCE) vulnerability in Windows DNS Server that is classified as a ‘wormable’ vulnerability and has a CVSS base score of 10.0. This issue results from a flaw in Microsoft’s DNS server role implementation and affects all Windows Server versions.