An issue in LRQA Nettitude PoshC2 after commit 09ee2cf allows unauthenticated attackers to connect to the C2 server and execute arbitrary commands via posing as an infected machine.
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
Access control involves the use of several protection mechanisms such as:
When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses: