CVE-2022-33116 in Open eClass Platform
Summary
by MITRE • 06/28/2022
An issue in the jmpath variable in /modules/mindmap/index.php of GUnet Open eClass Platform (aka openeclass) v3.12.4 and below allows attackers to read arbitrary files via a directory traversal.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 07/16/2022
The vulnerability CVE-2022-33116 represents a critical directory traversal flaw within the GUnet Open eClass Platform version 3.12.4 and earlier releases. This security weakness exists in the jmpath variable handling within the /modules/mindmap/index.php file, which exposes the system to unauthorized file access attempts by malicious actors. The vulnerability stems from insufficient input validation and sanitization mechanisms that fail to properly restrict user-supplied data from being processed as file paths. Attackers can exploit this flaw by crafting malicious directory traversal payloads that manipulate the jmpath parameter to navigate beyond the intended directory boundaries and access sensitive files on the server. The impact extends beyond simple information disclosure as it can potentially lead to complete system compromise through access to configuration files, database credentials, and other critical system resources.
This directory traversal vulnerability maps to CWE-22 - Improper Limiting of a Pathname to a Restricted Directory, which is a fundamental weakness in input validation and access control mechanisms. The flaw operates at the application layer and can be classified under the ATT&CK technique T1083 - File and Directory Discovery, where adversaries attempt to gather information about file systems and directory structures. The vulnerability demonstrates a classic lack of proper path validation that allows attackers to bypass normal access controls and traverse the file system hierarchy. The specific implementation in the mindmap module suggests that the platform fails to properly sanitize user inputs before using them in file system operations, creating an attack surface that can be leveraged for privilege escalation and data exfiltration.
The operational impact of this vulnerability is severe as it enables attackers to access arbitrary files on the target system, potentially including sensitive configuration files, user data, and system credentials. In the context of an educational platform like Open eClass, this could result in exposure of student records, course materials, instructor information, and administrative data. The vulnerability affects the entire platform's integrity and confidentiality, as attackers can potentially access not only user files but also system files that contain database connection strings, API keys, and other critical infrastructure information. The exploitation requires minimal technical expertise and can be automated, making it particularly dangerous for widespread deployment. Organizations using affected versions of Open eClass face significant risk of data breaches and compliance violations, especially in environments governed by regulations such as GDPR or FERPA.
Mitigation strategies for CVE-2022-33116 should prioritize immediate patching of the affected Open eClass platform to version 3.12.5 or later, which contains the necessary security fixes. In addition to patching, organizations should implement input validation measures that sanitize all user-supplied data before processing, particularly for path-related parameters. The implementation of proper access controls and the principle of least privilege should be enforced to limit file system access even if traversal attempts occur. Network-level protections such as web application firewalls can help detect and block malicious traversal attempts, while regular security audits and penetration testing should be conducted to identify similar vulnerabilities. System administrators should also implement monitoring and alerting mechanisms to detect unusual file access patterns that may indicate exploitation attempts. The vulnerability highlights the importance of proper input validation and secure coding practices, emphasizing that all user inputs should be treated as potentially malicious and validated against a strict whitelist of acceptable values. Organizations should also consider implementing additional security controls such as file system permissions, regular backup procedures, and incident response protocols to minimize the impact of potential exploitation.