EUVD-2024-35108

Comprehensive Technical Analysis of EUVD-2024-35108

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2024-35108 pertains to an arbitrary file upload flaw in the \modstudent\controller.php component of the Pisay Online E-Learning System using PHP/MySQL v1.0. This vulnerability allows attackers to execute arbitrary code by uploading a crafted file. The severity of this vulnerability is rated with a CVSS Base Score of 9.8, which is considered critical. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H indicates the following:

• Attack Vector (AV:N): The vulnerability is exploitable over the network.
• Attack Complexity (AC:L): The attack requires low complexity.
• Privileges Required (PR:N): No privileges are required to exploit the vulnerability.
• User Interaction (UI:N): No user interaction is required.
• Scope (S:U): The vulnerability does not change the security scope.
• Confidentiality (C:H): The vulnerability has a high impact on confidentiality.
• Integrity (I:H): The vulnerability has a high impact on integrity.
• Availability (A:H): The vulnerability has a high impact on availability.

2. Potential Attack Vectors and Exploitation Methods

Attackers can exploit this vulnerability by crafting a malicious file designed to execute arbitrary code upon upload. The following steps outline a potential attack vector:

1. File Crafting: The attacker creates a file with embedded malicious code, such as a PHP script.
2. File Upload: The attacker uploads the crafted file through the vulnerable \modstudent\controller.php component.
3. Code Execution: Upon successful upload, the malicious code is executed on the server, allowing the attacker to perform various actions, including data exfiltration, system compromise, and further malware deployment.

3. Affected Systems and Software Versions

The vulnerability specifically affects the Pisay Online E-Learning System using PHP/MySQL v1.0. Any organization or institution utilizing this version of the software is at risk. It is crucial to identify and update all instances of this software to mitigate the risk.

4. Recommended Mitigation Strategies

To mitigate the risk associated with EUVD-2024-35108, the following strategies are recommended:

1. Patch Management: Immediately apply any available patches or updates provided by the vendor to address the vulnerability.
2. Input Validation: Implement robust input validation and sanitization mechanisms to ensure that only valid file types are uploaded.
3. Access Controls: Enforce strict access controls to limit the ability of unauthorized users to upload files.
4. File Upload Restrictions: Configure the system to restrict file uploads to specific, trusted file types and sizes.
5. Monitoring and Logging: Enhance monitoring and logging to detect and respond to any suspicious file upload activities.
6. Regular Audits: Conduct regular security audits and vulnerability assessments to identify and address similar vulnerabilities.

5. Impact on European Cybersecurity Landscape

The critical nature of this vulnerability poses a significant risk to the European cybersecurity landscape, particularly for educational institutions and organizations utilizing the Pisay Online E-Learning System. Successful exploitation could lead to data breaches, unauthorized access, and disruption of educational services. The high CVSS score underscores the urgency for immediate remediation to protect sensitive information and maintain the integrity of educational systems.

6. Technical Details for Security Professionals

For security professionals, the following technical details are pertinent:

• Vulnerable Component: The vulnerability resides in the \modstudent\controller.php file of the Pisay Online E-Learning System.
• Exploitation Method: The attack involves uploading a crafted file that contains malicious code, which is then executed on the server.
• Detection: Implement intrusion detection systems (IDS) and intrusion prevention systems (IPS) to monitor for suspicious file upload activities.
• Response: Develop an incident response plan that includes steps for isolating affected systems, containing the threat, and restoring normal operations.
• Prevention: Educate users on the risks associated with file uploads and enforce strict security policies to prevent unauthorized file uploads.

Conclusion

EUVD-2024-35108 represents a critical vulnerability that requires immediate attention from cybersecurity professionals. By understanding the potential attack vectors, affected systems, and recommended mitigation strategies, organizations can effectively protect against this threat and safeguard their educational systems.

References

• GitHub Issue
• CVE Alias: CVE-2024-34919
• Assigner: Mitre
• EPSS Score: 1
• ENISA ID Product: n/a
• ENISA ID Vendor: n/a