Configuration Management / Weak Content Security Policy (CSP)

Description

Weak Content Security Policy (CSP) is a weakness found in web applications that can lead to serious security issues. This vulnerability is listed in the OWASP Testing Guide as WSTG-CONF-12. CSP is a security feature of web browsers that allows websites to control the resources that can be loaded, such as scripts and images, to help prevent malicious attacks. A weak CSP can allow malicious actors to inject malicious code, resulting in data theft and other malicious activities.

Risk

Weak CSP can result in serious security risks for web and API applications. A weak CSP can allow malicious code to be injected, resulting in data theft, malicious activities, and other security issues. Additionally, a weak CSP can reduce the effectiveness of other security measures, such as the Same-Origin Policy, which is a security measure that restricts how documents and scripts interact with each other.

Solution

To address this vulnerability, it is important to ensure that a strong Content Security Policy (CSP) is implemented. A strong CSP should specify a policy for each type of resource, such as scripts and images. Additionally, a strong CSP should restrict the use of untrusted content and operations as much as possible by only allowing what is strictly necessary for the application itself.