Umbraco CMS Directory Listing Scanner

Umbraco CMS is a popular open-source content management system used by web developers and organizations to create and manage websites. It offers a user-friendly interface and flexible customization options, making it suitable for businesses of all sizes to control their digital content. The CMS is used to develop complex websites, manage content efficiently, and is notable for its extendability through plugins and integrations. Web administrators and content teams leverage Umbraco CMS to maintain their site's content, ensuring consistent updates and administrative efficiency. Developers find it advantageous due to its open-source nature and robust community support, which helps accelerate development processes. The vulnerability check focuses on the detection of misconfigurations, especially regarding directory listing exposures in its setup.

The directory listing exposure vulnerability allows unauthorized users to view the contents of sensitive directories on a server. This security misconfiguration could potentially expose critical configuration files, logs, and backups, providing valuable information to attackers. Unauthorized access to these directories can lead to further attacks, as attackers might gain insight into server configurations and other sensitive data. It's essential for systems running Umbraco CMS to have directory listing disabled to prevent such vulnerabilities. Misconfigured web servers tend to leave directory listings enabled by default, raising the risk of unauthorized information disclosure. Detecting and reporting such exposures enables admins to rectify these misconfigurations promptly.

The directory listing vulnerability typically occurs due to misconfigured server settings that leave directories accessible over the web. Commonly impacted directories in Umbraco CMS include /App_Data/' and /App_Plugins/'. These directories may contain configuration files, logs, or other sensitive information that could aid an attacker. The scanner specifically checks for HTTP 200 status codes and specific strings within the directory listings to identify these exposures. It's crucial for website administrators to have server directory listing disabled to safeguard against such vulnerabilities. A well-configured server ensures that no directory listing is available to prying eyes, thereby securing sensitive data.

If an attacker exploits directory listing exposure in Umbraco CMS, they could access configuration files and potentially uncover details like database connection strings. Such access might lead to data breaches or unauthorized data manipulation if the files contain poorly secured credentials. Untended, these exposures might also reveal backup files that could be downloaded and analyzed offline by attackers, posing further risks. Exploitation may lead to denial of service if configurations are manipulated improperly, disrupting site availability. Malicious users may use gained information to map the internal directory structure, facilitating further attacks on the system. Maintaining secure configurations is critical to preventing these negative impacts.

REFERENCES

• https://docs.umbraco.com/umbraco-cms/reference/security/security-hardening