CarbonAds SRV Content-Security-Policy Bypass Scanner

The CarbonAds SRV is a service often integrated into websites for advertising content management. It is used by web developers and site administrators to manage and deliver targeted ad content based on users’ interactions. Unfortunately, in some cases, improper Content-Security-Policy configurations can render systems vulnerable to external script injections, posing a significant threat to data protection. Particularly in digital marketing and content distribution networks, precise configuration is essential to prevent unauthorized data access and manipulation. This scanner plays a vital role in identifying such misconfigurations, thereby safeguarding user data and maintaining system integrity.

Cross-Site Scripting (XSS) vulnerabilities occur when data enters a web application through an untrusted source, often via web requests, and is then included in dynamic content that is sent to a web user without being validated. This scanner specifically detects cases where the Content-Security-Policy (CSP) in use does not adequately restrict script execution, allowing injected code to run. It operates by identifying instances where CSP rules, when coupled with CarbonAds tracking scripts, can be bypassed. Such vulnerabilities allow attackers to execute malicious scripts, which can result in data theft, session hijacking, and unauthorized actions on behalf of users.

The scanner thoroughly analyzes your site's CSP headers to ensure they impose strict limitations on external script origins. It identifies weaknesses where CarbonAds scripts are embedded, detecting if variables are manipulated to introduce unapproved scripts. Using specific payloads mimicking script injection, it evaluates whether the security policy can be undermined to execute harmful scripts. A precise focus is placed on inspecting the 'Content-Security-Policy' directive within HTTP headers, ensuring all received scripts conform strictly to declared policies. This ensures comprehensive assessment of any potential bypass capacity and remedies to close these gaps efficiently.

Exploiting this particular vulnerability allows attackers to introduce scripts from unauthorized domains, leading to unauthorized data access and compromised user security. Malicious entities could exploit such weaknesses to steal sensitive user data, credentials, or insert unwanted advertisements, undermining user trust. Consequently, this can lead to reputational damage or legal penalties for non-compliance with data protection regulations. In more severe cases, it paves the way for large-scale data breaches, causing extensive financial losses and operational disruptions.

REFERENCES

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