AncestryCDN Angular Content-Security-Policy Bypass Scanner

The Ancestry Content-Security-Policy Bypass Scanner is designed to identify potential CSP bypasses in web applications using Ancestry's CDN and Angular frameworks. It's utilized extensively by security professionals during penetration testing and security assessments. The tool targets developers and organizations seeking to enhance the security posture of their web applications. By detecting CSP bypass vulnerabilities, it aids in maintaining the confidentiality and integrity of client data. Primarily used in digital forensics, this scanner is essential for evaluating CSP efficacy. It plays a crucial role in preemptive threat detection and remains a staple in cybersecurity toolkits.

The detected vulnerability, CSP bypass, allows attackers to violate security policies intended to prevent unauthorized access or execution of malicious scripts. CSPs are critical for maintaining a secure browser environment, and bypassing them can lead to numerous security risks. This scanner identifies inconsistencies and misconfigurations within the CSP headers. With a focus on detecting Angular-based CSP vulnerabilities, it alerts users to potential weaknesses. Understanding and detecting such vulnerabilities is crucial for maintaining robust web security. It's an essential tool for diagnosing and mitigating script-based exploits.

Technically, the scanner targets the header responses of web applications using Angular frameworks delivered via the Ancestry CDN. Specifically, it examines the presence and configuration of the "Content-Security-Policy" header in HTTP responses. By utilizing fuzzing techniques, it probes for possible CSP evasions or weaknesses. The scanner leverages payloads designed to test Angular's ng-app and ng-csp directives. It matches specific header patterns and behavior to identify successful bypasses. The tool is engineered for accuracy, ensuring false positives are minimized.

Exploiting a CSP bypass can result in severe security breaches, whereby malicious scripts are executed without the end user's consent. This can lead to widespread data theft, as attackers may gain unauthorized access to sensitive information. The degradation of web application security could also increase susceptibility to further vulnerabilities. Script injection attacks like XSS might become feasible through such exploits. CSP bypass exploitation threatens the overall security posture of the web application, ultimately impacting user trust. Moreover, repairing the breached security systems can incur significant costs and resource allocation.

REFERENCES

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