Typo3 Exposure Scanner

Typo3 is a powerful open-source content management system (CMS) used across various industries for creating and managing websites. Typically employed by businesses, agencies, and enterprises, Typo3 enables users to build dynamic and feature-rich websites without extensive coding knowledge. It supports high flexibility and scalability, making it ideal for large-scale applications. Users benefit from an extensive range of extensions and plugins that add functionality to their websites. As a widely adopted CMS, Typo3 is developed and maintained by a robust community that ensures continuous improvements and security updates. The platform's ability to cater to diverse needs makes it highly versatile and effective for managing digital content.

Improper File Process occurs when sensitive files, such as configuration files, are exposed due to misconfigurations or lack of access controls. In the context of Typo3, exposure of the composer.json file can lead to unauthorized access or exploitation of the system. Attackers might utilize this information to gain insights into the web application, potentially leading to further attacks. The vulnerability can arise from the absence of necessary protection mechanisms, allowing unauthorized users to retrieve protected content. Detecting this vulnerability is essential to safeguarding sensitive information and preventing unwarranted access to critical files. Mitigating this risk involves implementing proper access restrictions and regularly auditing file permissions.

The vulnerability involves the exposure of the composer.json file located in the Typo3 install tool directory. This file can be accessed if not properly secured, revealing information about the installed modules and their configurations. The endpoint serving the file is a particular point of interest, especially if the HTTP status code 200 confirms its existence. An attacker exploiting this vulnerability may use the exposed data to further assess the application's security weaknesses. Technical aspects of the vulnerability involve ensuring that the specified endpoint is inaccessible to unwanted users. Basic HTTP access controls or additional server-side configurations may be necessary to restrict access to such sensitive file locations.

Exploiting this vulnerability can have several consequences, such as unauthorized access to configuration data and potential misuse of sensitive information. Malicious actors might leverage this information to perform targeted attacks, gaining insights into the system's architecture and installed components. The risk of exposure increases if the file contains sensitive details such as database credentials or API keys. Successful exploitation could lead to a compromise of the entire web application's security, enabling further attacks like privilege escalation or data exfiltration. Therefore, timely detection and remediation of this vulnerability are crucial to maintaining the integrity and confidentiality of the web application.

REFERENCES

• https://docs.typo3.org/c/typo3/cms-core/main/en-us/Changelog/9.0/Breaking-83302-ComposerRestrictsInstallationOfTypo3cms.html