OAuth 2.0 Authentication Vulnerabilities in Web App Penetration Testing | 2023
In this section, we’ll explain what an OAuth Attack is, describe some types, explain how to find and exploit OAuth, and summarize how to prevent from OAuth | Karthikeyan Nagaraj
10 min readNov 9, 2023
OAuth 2.0 authentication vulnerabilities
- While browsing the web, you’ve almost certainly come across sites that let you log in using your social media account.
- The chances are that this feature is built using the popular OAuth 2.0 framework.
- OAuth 2.0 is highly interesting for attackers because it is both extremely common and inherently prone to implementation mistakes. This can result in a number of vulnerabilities, allowing attackers to obtain sensitive user data and potentially bypass authentication completely.
- In this section, we’ll teach you how to identify and exploit some of the key vulnerabilities found in OAuth 2.0 authentication mechanisms. Don’t worry if you’re not too familiar with OAuth authentication — we’ve provided plenty of background information to help you understand the key concepts you’ll need. We’ll also explore some vulnerabilities in OAuth’s OpenID Connect extension…
