Book Image

Securing Network Infrastructure

By : Sairam Jetty, Sagar Rahalkar
Book Image

Securing Network Infrastructure

By: Sairam Jetty, Sagar Rahalkar

Overview of this book

Digitization drives technology today, which is why it’s so important for organizations to design security mechanisms for their network infrastructures. Analyzing vulnerabilities is one of the best ways to secure your network infrastructure. This Learning Path begins by introducing you to the various concepts of network security assessment, workflows, and architectures. You will learn to employ open source tools to perform both active and passive network scanning and use these results to analyze and design a threat model for network security. With a firm understanding of the basics, you will then explore how to use Nessus and Nmap to scan your network for vulnerabilities and open ports and gain back door entry into a network. As you progress through the chapters, you will gain insights into how to carry out various key scanning tasks, including firewall detection, OS detection, and access management to detect vulnerabilities in your network. By the end of this Learning Path, you will be familiar with the tools you need for network scanning and techniques for vulnerability scanning and network protection. This Learning Path includes content from the following Packt books: •Network Scanning Cookbook by Sairam Jetty •Network Vulnerability Assessment by Sagar Rahalkar
Table of Contents (28 chapters)
Title Page
Copyright and Credits
About Packt
Contributors
Preface
Index

Authorization


Once a user has been authenticated, the next task is to authorize the user to give him/her access to data. Based on the user role and privileges, the application grants authorization. To test for authorization vulnerabilities, we require valid credentials from each of the different roles present in an application. Using some preliminary tools, we can attempt to bypass the authorization schema and gain access to the superuser account while using the credentials of a normal user.

OWASP mapping

Authorization-related vulnerabilities are part of the OWASP Top 10 2017. They are covered under A5:2017 Broken Access Control. Some of the vulnerabilities listed under this category are as follows:

  • Bypassing access control checks by tampering with the URL
  • Allowing the primary key to be changed to another user's record, and allowing viewing or editing someone else's account
  • Escalating privileges