TealiumIQ Visitor Service Content-Security-Policy Bypass Scanner

TealiumIQ Visitor Service is commonly used by enterprises for tag management solutions, allowing for the dynamic insertion and management of various tags onto webpages. It is primarily employed by digital marketing teams to enhance tracking and analytics capabilities. Companies across diverse industries implement this product to optimize website functionalities and to gather comprehensive visitor data. Security teams often use it to maintain robust and secure web infrastructures, avoiding any potential attacks through vulnerabilities. Given its extensive application, it's essential to ensure that TealiumIQ deployments are free from exploitable weaknesses.

The vulnerability in question involves a Content-Security-Policy (CSP) bypass, which could expose systems using TealiumIQ Visitor Service to Cross-Site Scripting (XSS) attacks. Such vulnerabilities are critical as they could allow attackers to inject and execute malicious scripts in a trusted context. XSS vulnerabilities may lead to unauthorized data access, data manipulation, and additional security breaches. By exploiting this flaw, malicious actors could modify the behavior of web applications, potentially leading to data leaks or unauthorized usage of system resources.

Technical details of the vulnerability reveal that it exploits a misconfigured or permissive CSP, especially involving the inclusion of external scripts from tealiumiq.com. The affected endpoint is susceptible when content security policies are improperly defined, permitting unintended script execution. The vulnerability involves a specific injection payload using a TealiumIQ external service which, when executed, confirms successful exploitation through an alert. The matcher logic inspects server responses, ensuring the CSP mechanism is inadequate, allowing potential script inclusion.

If the vulnerability is exploited, unauthorized scripts can execute on client-side browsers, potentially leading to data theft or session hijacking. Users could unknowingly become victims of phishing attacks or have their credentials compromised. Moreover, this could undermine user trust and result in reputational damage for organizations utilizing the vulnerable service. Effective exploitation might allow attackers to navigate or manipulate the application in unintended ways, posing significant security risks.

REFERENCES

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