WordPress Plugin Google Tag Manager Full Path Disclosure Scanner

The WordPress Plugin Google Tag Manager is used by website administrators to integrate Google Tag Manager, a tool for managing analytics and marketing tags, into their WordPress sites. It is commonly utilized by digital marketers, web developers, and analysts to simplify tag management and deployment across pages without needing constant code changes. This plugin enhances the agility of marketing campaigns and aids in comprehensive data collection without interfering with the site's performance. Used on myriad WordPress platforms, it significantly eases the management of website tags and improves tracking efficiency. The plugin is favored for its ease of use and ability to incorporate a wide range of Google and third-party tags seamlessly. This widespread utilization underscores the need for regular security checks to prevent vulnerabilities.

A Full Path Disclosure vulnerability occurs when server scripts expose the file path to the web root, potentially leading to sensitive information exposure. In the WordPress Plugin Google Tag Manager, this is a result of improper access controls or missing protections for certain files. The vulnerability is considered low severity due to its indirect impact but can be exploited by attackers to gather intelligence on server structure, which aids in launching more targeted attacks. Being aware of file paths allows attackers to plan further invasive maneuvers, particularly if combined with other vulnerabilities. The access to paths and error messages reveals insights that are typically safeguarded under routine operations, emphasizing the necessity for developers to prevent such disclosures. Understanding this vulnerability is crucial for maintaining site security and protecting sensitive information.

Technically, the vulnerability is found in the admin.php file located within the plugin's directory, which is accessible publicly without adequate ABSPATH protection. The endpoint becomes vulnerable when accessed directly, displaying PHP error messages including the full server path. A typical scenario involves sending GET requests to '/wp-content/plugins/duracelltomi-google-tag-manager/admin/admin.php', which, when accessed without protections, results in the disclosure of server paths accompanied by fatal PHP error messages. This condition arises due to improper configuration that fails to sanitize or restrict access adequately. The plugin's failure to handle such exceptions securely leads to this exposure, and an attacker exploiting this would use it to decipher server blueprint necessary for subsequent threats.

Exploiting the Full Path Disclosure vulnerability can lead to several repercussions. Malicious actors can utilize the disclosed server path information to map the server's file structure, assisting them in crafting more tailored attacks. Moreover, this vulnerability can serve as a stepping stone for exploiting other vulnerabilities, exacerbating the potential damage. It may also lead to unauthorized access to restricted areas of the server if combined with other vulnerabilities. Information gathered can aid attackers in bypassing security measures or locating sensitive files. Ultimately, unchecked exposure of such detailed information could culminate in compromised data integrity and loss of user trust.

REFERENCES

• https://wordpress.org/plugins/duracelltomi-google-tag-manager/