Dolibarr is an open-source ERP and CRM suite used primarily by small to medium-sized businesses and freelancers to manage operations such as invoicing, orders, customer relations, and inventory. The software offers comprehensive solutions for business management, leveraging modules to extend its functionality. It is used worldwide by diverse industries due to its flexibility and modular architecture. Dolibarr is often self-hosted or provided through SaaS platforms, enabling businesses to tailor it according to their operational needs. Its popularity stems from providing robust solutions to streamline administrative processes efficiently and economically.
The Local File Inclusion (LFI) vulnerability detected in Dolibarr versions <=22.0.4 allows authenticated users to exploit the application by including files from the server. Such vulnerabilities typically arise from insufficient input validation when dynamic file paths are constructed from user inputs. This flaw, particularly with the 'objectdesc' parameter, facilitates unauthorized file access, posing security risks. LFIs can lead to unauthorized display of files, revealing sensitive configurations or private data that could be leveraged for further attacks.
Technically, the issue is within the 'restrictedArea()' function in 'selectobject.php', enabling maliciously crafted input to bypass logical restrictions. The vulnerable endpoint is '/core/ajax/selectobject.php', manipulated through the 'objectdesc' parameter to illegally access local files. Attackers can utilize this input to traverse directories and retrieve file contents from the server, targeting non-PHP files that could contain sensitive information. Indicators of a successful exploit include directory traversal strings and unexpected file content in server responses.
Exploiting this vulnerability could lead to unauthorized access to sensitive data files, compromising confidentiality. Attackers might retrieve configuration files, thereby gaining critical insights which could be used for further privileged exploits. Additionally, exposure of non-PHP files could assist in crafting more sophisticated attacks by revealing structural details of the system. Unauthorized file access leads to data breaches, privacy violations, and potential service disruptions.
REFERENCES
- Immediately upgrade Dolibarr to a secure version above 22.0.4 when patches become available.
- Implement strict input validation and sanitization, especially for parameters used in file paths.
- Restrict file permissions to essential access only, minimizing exposure of sensitive files.
- Enable extensive logging to detect and thwart illicit file access attempts promptly.
- Regularly review and apply security updates from trusted sources.
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