XSS Vulnerability Scanner

Check for Cross-Site Scripting Vulnerability on Web Applications

Contents of the Report

Here is what you can expect in Scantrics’ XSS Vulnerability Scanner report:

Use Cases for XSS Vulnerability
Scanner

The XSS Vulnerability Scanner allows organizations to find XSS vulnerabilities on their web application. Cross-site scripting is one of the attack vectors that attackers will try to exploit and find from any function/feature of a web application.

Perform A Website Vulnerability Assessment

Using the XSS Vulnerability Scanner to automatically check for any function that is susceptible to cross-site scripting will help organizations to determine the vulnerable function and allow them to fix the problem before being exploited by attacker.

Stay Vigilant of a Limitless Attack Variable

The malicious content sent to the web browser often takes the form of a JavaScript segment, but may also include HTML, Flash, or any other type of code that the browser may execute. The variety of attacks based on XSS is almost limitless.

Technical Details

What Is cross-site scripting (XSS)?

Cross-site scripting is a vulnerability that allows an attacker to target scripts embedded in web pages that are executed on the client-side (in the user’s web browser) rather than on the server-side. Cross-site scripting attacks, also known as XSS attacks, are one of the most common application-layer web attacks.

Brought about by the web security weaknesses of client-side scripting languages, such as HTML and JavaScript, XSS vulnerabilities permit an attacker to:

Pretend to be the targeted user.
Carry out any actions that the user is able to perform.
Access any of the user’s data.

What is most dangerous is when the targeted user has privileged access within the web application. If so, then the attacker might be able to gain full control over all of the web application’s functionality and data.

What is the impact of cross-site scripting?

When attackers exploit XSS vulnerabilities, they can perform malicious actions, such as:

Hijack an account by gaining access to account credentials.
Spread web worms.
Access a user’s browser history and clipboard contents.
Control a user’s browser remotely.
Scan and exploit intranet appliances and applications.

How it works?

A target URL is the parameter to be scanned by the XSS Vulnerability Scanner. The tool needs the full URL of the target that includes http:// or https:// as the protocol. Since the tool does not follow any redirects, the exact URL will be scanned.

This tool runs a security check by replacing the original parameters of a test step with harmless strings, which resemble the malicious strings that are used in real attacks. It injects these strings to both XML elements and JSON fields.

The XSS scanner then uses assertions to validate requests and responses and check if they include any information about potential web application vulnerabilities. ‘PASS’ will be logged for all assertions that pass successfully. ‘FAIL’ will be logged for any assertion that fails.