This section covers each form of output encoding, where to use it, and where to avoid using dynamic variables entirely. Variables should not be interpreted as code instead of text. Output Encoding is recommended when you need to safely display data exactly as a user typed it in. Output Encoding and HTML Sanitization help address those gaps. However, frameworks aren't perfect and security gaps still exist in popular frameworks like React and Angular. Frameworks make it easy to ensure variables are correctly validated and escaped or sanitised. Any variable that does not go through this process is a potential weakness. Ensuring that all variables go through validation and are then escaped or sanitized is known as perfect injection resistance. Each variable in a web application needs to be protected. XSS Defense Philosophy ¶įor XSS attacks to be successful, an attacker needs to insert and execute malicious content in a webpage. OWASP are producing framework specific cheatsheets for React, Vue, and Angular. This is where Output Encoding and HTML Sanitization are critical. There will be times where you need to do something outside the protection provided by your framework. Understand how your framework prevents XSS and where it has gaps.
0 Comments
Leave a Reply. |