Chapter-21, LEC-4 | Stored XSS | #rumbel #ethicalhacking #hacking #education

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Stored Cross-Site Scripting (XSS) is a type of XSS attack in which an attacker injects a malicious script into a web application that is then stored on the server and executed whenever the page containing the script is accessed. This type of XSS is more dangerous than Reflected XSS because the script can be executed multiple times and can affect many users.

The attack can be initiated by the attacker submitting a form or input field that contains the malicious script, which is then stored on the server. The script may be hidden in comments or other user-generated content and may not be immediately apparent to users or web developers. When other users access the page containing the stored script, the malicious code is executed by their browser, allowing the attacker to steal sensitive information or take control of user accounts.

To prevent Stored XSS attacks, web developers must properly sanitize and validate user input to prevent the injection of malicious scripts into the application's database. Additionally, web applications should implement measures such as Content Security Policy (CSP) to restrict the execution of scripts and regularly update their software and libraries to address known vulnerabilities.

Users can protect themselves from Stored XSS attacks by being cautious when submitting information on unfamiliar websites and using browser extensions that block scripts from untrusted sources. It is also recommended to regularly update web browsers to ensure that they have the latest security features.