Hacking Exposed 5th Edition

OVERVIEW

At the heart of nearly all security problems are vulnerabilities. Whether they are vendor vulnerabilities, web developer vulnerabilities, misconfigurations, or policy violations, these vulnerabilities create and wreak havoc on our everyday lives. These security weaknesses cause billions in damage every year and can overwhelm those who must recover from these situations. And while security products and services try to mask the core of the security problem by addressing only the symptoms of the problem, managing your vulnerabilities is the only true way to solve the problem at its core .

It is often said that to err is human, and to forgive is divine. Applied to security this means that we as humans all produce errors and therefore cannot eliminate them all (which is true), and if you forgive me for making an error, you will be seen divinely. Unfortunately, over the years most developers and both network and system administrators have adopted this mindset as well, causing an untold amount of damage and distress for corporations and home users alike. So what can we do? We can solve the core problem.

The core problem is that developers and administrators create vulnerabilities and security weaknesses in nearly everything they produce, whether that be a line of code or a policy enforced or a default setting on a server. So we are the problem, which means only we can reduce it. This is the fundamental paradigm behind secure code. Although the entirety of this topic is beyond the scope of this chapter, we will cover all the vital areas in an attempt to educate you in the dark world of hacking code.