Battle.net EU Content-Security-Policy Bypass Scanner

The Battle.net EU platform is a widely used online service by Blizzard Entertainment that caters to gamers for various purposes, including downloading games, account management, and community interaction. It serves millions of users across Europe, integrating various digital services and software solutions. Due to its vast user base and complex services, stringent security protocols are crucial to protect user data and ensure seamless service. Organizations managing Battle.net EU dependencies must remain vigilant against potential vulnerabilities. This vigilance includes regular security assessments and maintaining the latest security patches. Security measures ensure a secure and trusted gaming experience for its users worldwide.

This scanner focuses on detecting potential Cross-Site Scripting (XSS) vulnerabilities, specifically related to Content-Security-Policy bypass techniques in the Battle.net EU domain. Such vulnerabilities can lead to unauthorized script execution in the user's browser, potentially stealing sensitive information or taking control over user sessions. The scanner works by simulating attack vectors that could exploit policy bypass techniques. A successful detection means the system is likely vulnerable to XSS attacks. Regular use of this scanner helps identify and mitigate such security threats, maintaining the integrity of web applications.

Technically, the scanner works by sending GET requests with specific payloads targeting Content-Security-Policy headers. It checks the server's response for misconfigurations that could allow XSS attacks. The exploitation involves inserting malicious scripts through payloads in query parameters to detect execution within the browser environment. If such scripts are executed without restriction, it signals a potential vulnerability. The payloads specifically target known weaknesses in how Battle.net EU handles content policies. It operates by mimicking potential attacker strategies, thereby exposing weak spots in the web architecture.

Exploiting this vulnerability could lead to significant adverse effects, including unauthorized access to sensitive user information and account compromise. Attackers could also execute arbitrary scripts in the context of the user's session, leading to data theft, session hijacking, or further network intrusion. Such breaches jeopardize the platform's reputation and user trust. Continuous exposure to XSS vulnerabilities might also attract regulatory scrutiny, leading to compliance challenges. Therefore, addressing these vulnerabilities promptly is crucial for maintaining application security and user confidence.

REFERENCES

• https://github.com/renniepak/CSPBypass/blob/main/data.tsv