Dockerfile Hidden Disclosure

What is the "Dockerfile Hidden Disclosure?"

The "Dockerfile Hidden Disclosure" module is designed to detect misconfigurations in Dockerfiles. Dockerfiles are configuration files used to build Docker images, which are lightweight, portable, and self-contained software packages. This module focuses on identifying hidden information in Dockerfiles that may expose sensitive data or provide potential attack vectors.

This module has a medium severity level, indicating that the identified misconfigurations could potentially lead to security vulnerabilities or data exposure if left unaddressed.

This module was authored by dhiyaneshDk.

Impact

If misconfigurations are detected in Dockerfiles, it can have several potential impacts:

- Exposure of sensitive information: Misconfigured Dockerfiles may inadvertently expose sensitive data, such as credentials or configuration details, to unauthorized users. - Increased attack surface: Misconfigurations can create vulnerabilities that attackers can exploit to gain unauthorized access or execute malicious code within the Docker environment. - Compromised container integrity: Misconfigurations may result in compromised container integrity, allowing attackers to modify or tamper with the container's contents.

How does the module work?

The "Dockerfile Hidden Disclosure" module works by performing HTTP requests and applying matching conditions to identify misconfigurations in Dockerfiles. It searches for specific patterns and headers to determine if a Dockerfile contains hidden information that may pose a security risk.

One example of a matching condition used by this module is a regular expression that checks for common Dockerfile commands, such as "FROM," "RUN," "ADD," "WORKDIR," "ENV," "EXPOSE," and comments (lines starting with "#"). If any of these commands are found, it indicates the presence of potentially sensitive information in the Dockerfile.

The module also checks the response status code to ensure that the requested Dockerfile exists (status code 200) and verifies that the response does not indicate a content type of "text/html" to avoid false positives.

By applying these matching conditions, the module can effectively identify hidden disclosures in Dockerfiles and provide actionable insights for remediation.

For more information, you can refer to the module's GitHub repository.