Yuedust Angular Content-Security-Policy Bypass Scanner

The Yuedust Angular Scanner is utilized by developers and security teams to detect issues related to Content-Security-Policy (CSP) bypass vulnerabilities. It's widely employed across web applications that utilize the Angular framework for dynamically serving content. Its primary audience includes web developers, QA testers, and security professionals, focusing on application security. The scanner helps in proactively identifying security loopholes, ensuring robust application security. Through intelligent scanning, it assists organizations in complying with web security standards. Regular use of the tool can prevent potential reputational damage and financial losses caused by exploitations.

Cross-Site Scripting (XSS) is a vulnerability where malicious scripts are injected into web pages, executed within the browser, and can potentially compromise user information. When security policies like CSP are bypassed, they offer attackers a chance to execute malicious scripts despite security measures in place. This vulnerability is particularly dangerous when coupled with sensitive operations performed in web applications, as it allows unauthorized access to user data and interactions. XSS attacks can affect both end-users and the organization's web infrastructure. Understanding and mitigating XSS vulnerabilities are critical steps in securing web applications. By detecting these vulnerabilities, organizations enhance their cybersecurity posture, making web environments safer.

This scanner attempts to identify CSP bypass vulnerabilities by analyzing HTTP headers and performing fuzzing techniques on Angular-enabled applications. It navigates to specific URLs and measures the response to confirm the presence of CSP bypass conditions. The tool looks for specific script tags and embedded Angular attributes indicative of a compromised CSP. It utilizes potential payloads and observes responses to detect script execution despite existing security policies. The tool's fuzzing capabilities help in refining the detection of vulnerable points in application paths. Such technical interrogation by the scanner aids in reconciling apparent security gaps in dynamic web environments.

When CSP is bypassed, malicious actors might inject scripts that could execute in the user’s browser, leading to potential information theft or session hijacking. This could result in unauthorized data access, loss of user confidences, such as session tokens or confidential data exchanges, and even alter the application's intended behaviors. The cascading effects may extend to system downtimes, user account takeovers, and sophisticated phishing attacks through client-side script execution. Organizations might face legal challenges if such vulnerabilities are exploited, especially in cases involving sensitive personal data. Timely detection and remediation mitigate these potential impacts substantially.

REFERENCES

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