Hi williebald,
Not an expert in criminal justice/ forensic science/ US university system but I will give it a go.
Most courses say what their requirements are and there is usually the catch-all "or other relevant field". So I would check each of the courses yourself and give them a call/email to check. Though it is a science degree and as such having a law based bachelors course isn't going to look good. Forensic science is a science subject and they will be expecting you to have basic maths, problem-solving skills and maybe basic chemistry/biology. If you want to go down forensic science you will probably need to show the admissions staff you have the relevant skills as a pre-requisite, which can only be determined with a call.
If you are wondering what to do a masters in general. What topic interested you the most in your course? Explore that area and find a course that is relevant, as doing a masters that you are interested in always helps.This a personal decision and only you know what is right for you, so sit down and do alottttt of research to find what is right for you.