Introduction to Reflected XSS into a JavaScript string with angle brackets HTML encoded.
In Reflected XSS into a JavaScript string with angle brackets, Reflected Cross-Site Scripting (XSS) is a web security vulnerability where an attacker injects malicious code into a user’s browser. This occurs when a website fails to validate or sanitize user input before including it in dynamic JavaScript strings. Attackers may evade detection by encoding certain characters, such as angle brackets, to evade detection. To mitigate reflected XSS vulnerabilities, developers must validate and sanitize user input before using it in dynamic content. Output encoding is essential to protect against XSS attacks. Prioritizing web security, including input validation, output encoding, and regular security testing, can help website owners safeguard against XSS vulnerabilities and improve user data and browsing experiences.
Lab Solutions | Practical Work Time Reflected XSS into a JavaScript string
This lab contains a reflected cross-site scripting vulnerability in the search query tracking functionality where angle brackets are encoded. The reflection occurs inside a JavaScript string. To solve this lab, perform a cross-site scripting attack that breaks out of the JavaScript string and calls the alert function XSS into a JavaScript string with angle brackets.
Stepwise Solution of the lab:-
After accessing this lab you can see here we first noticed it has “Search” functionality.
Now, let’s see its functionality by random word.
We can test it by simple payload usually we use for Reflected XSS (Cross-Site scripting).
It didn’t reflect, Right? Have a look at source code via Dev-Tool. It’s basically encoded.
In this kind of scenario (In this lab as well) , we can use this payload.
'-alert(1)-'
It works and the lab has been loved. 🙂
Stay tuned for upcoming labs and keep continuing the series.
I hope you had loved reading this article after you had completed this article we highly recommend you to study the next article: DOM XSS in document.write sink using source location.search inside a select element, please don’t forget to leave a comment over here and share it with your friends as well, Good Luck!
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FAQS
Website security refers to protecting a website or web application from cyberattacks, unauthorized access, or other security threats.
Web application security means protecting a website from cyberattacks. These attacks may include vulnerabilities such as SQL injection, XSS, file inclusion, and others.
It is always a good practice to use an up-to-date browser with timely updates. Keep your browser plugins up-to-date, avoid malicious websites and links, and always enable 2-factor authentication while avoiding clickjacking.
Searching for someone’s social security number or credit card information on the dark web is illegal and unethical. It is important to always avoid such activities and protect yourself and others from cyber threats.
