H3-2022-0001

Web Application Cross Site Scripting Vulnerability

Description

Cross-Site Scripting (XSS) is a type of injection vulnerability where an attacker injects malicious scripts into otherwise benign and trusted websites. This vulnerability typically affects web applications that dynamically include user-provided input in their webpage outputs without properly validating or encoding it. The exploitation usually occurs when an attacker manages to get a victim to load a website with the malicious script embedded via a URL, form input, or other user input mechanisms.

Impact

Exploiting this vulnerability allows an attacker to execute arbitrary scripts in the context of the victim's browser. This can lead to unauthorized access to sensitive information such as cookies and session tokens, session hijacking, or redirecting users to malicious websites. The specific impact depends on the privileges and data accessible to the victim within the application.

References

• Cross Site Scripting (XSS)
• MITRE ATT&CK Technique: T1203: Exploitation for Client Execution