EUVD-2024-35183

Comprehensive Technical Analysis of EUVD-2024-35183

1. Vulnerability Assessment and Severity Evaluation

Vulnerability Description: The EUVD entry EUVD-2024-35183 describes an arbitrary file upload vulnerability in the uploadAudio method of the inxedu software version 2024.4. This vulnerability allows attackers to execute arbitrary code by uploading a crafted .jsp file.

Severity Evaluation: The vulnerability has a CVSS Base Score of 9.8, which is classified as 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): Network (N)
• Attack Complexity (AC): Low (L)
• Privileges Required (PR): None (N)
• User Interaction (UI): None (N)
• Scope (S): Unchanged (U)
• Confidentiality (C): High (H)
• Integrity (I): High (H)
• Availability (A): High (H)

This high severity score underscores the critical nature of the vulnerability, which can lead to complete system compromise.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Network-Based Attack: The attacker can exploit this vulnerability remotely over the network without needing physical access to the system.
• Low Complexity: The exploitation method is straightforward, requiring minimal technical skill.
• No Privileges Required: The attacker does not need any special privileges to exploit this vulnerability.
• No User Interaction: The attack does not require any interaction from the user, making it highly effective.

Exploitation Methods:

• Crafted .jsp File Upload: An attacker can upload a specially crafted .jsp file through the uploadAudio method. This file can contain malicious code that, when executed, allows the attacker to gain control over the server.
• Remote Code Execution (RCE): Once the malicious .jsp file is uploaded and executed, the attacker can perform various actions, including data exfiltration, system modification, and further malware deployment.

3. Affected Systems and Software Versions

Affected Software:

• inxedu v2024.4

Potentially Affected Systems:

• Any system running the inxedu software version 2024.4, particularly those with the uploadAudio method exposed to the internet.

4. Recommended Mitigation Strategies

Immediate Actions:

• Patching: Apply the latest security patches provided by the vendor to mitigate the vulnerability.
• Input Validation: Implement strict input validation and sanitization for file uploads to prevent the upload of malicious files.
• File Type Restrictions: Restrict the types of files that can be uploaded to only those that are necessary and safe.
• Access Controls: Implement robust access controls to limit who can upload files and to what directories.

Long-Term Strategies:

• Regular Security Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate similar vulnerabilities.
• Security Training: Provide security training for developers and administrators to ensure they are aware of best practices for secure coding and system management.
• Intrusion Detection Systems (IDS): Deploy IDS to monitor for suspicious activities and potential exploitation attempts.

5. Impact on European Cybersecurity Landscape

Regional Impact:

• Critical Infrastructure: If inxedu is used in critical infrastructure, this vulnerability could have severe implications for national security and public safety.
• Data Protection: The vulnerability poses a significant risk to data protection and privacy, particularly in light of GDPR regulations.
• Economic Impact: Organizations relying on inxedu for their operations could face financial losses due to data breaches, system downtime, and legal penalties.

Regulatory Compliance:

• GDPR Compliance: Organizations must ensure they comply with GDPR by implementing appropriate security measures to protect personal data.
• NIS Directive: Critical infrastructure operators must adhere to the Network and Information Systems (NIS) Directive, which mandates robust cybersecurity measures.

6. Technical Details for Security Professionals

Vulnerability Details:

• Vulnerable Method: uploadAudio
• Exploit Type: Arbitrary file upload leading to remote code execution (RCE)
• File Type: .jsp

Detection and Response:

• Log Analysis: Monitor server logs for unusual file upload activities and suspicious .jsp file executions.
• File Integrity Monitoring: Implement file integrity monitoring to detect unauthorized changes to critical files.
• Incident Response Plan: Develop and maintain an incident response plan to quickly address any detected exploitation attempts.

References:

• Vendor Website: inxedu
• GitHub Reference: GitHub Repository

Aliases:

• CVE-2024-35079

Assigner:

• Mitre

EPSS Score:

• 1 (indicating a low likelihood of exploitation in the wild, but this should not be a reason to ignore the vulnerability)

ENISA ID:

• Product: n/a
• Vendor: n/a

By addressing this vulnerability promptly and effectively, organizations can significantly reduce the risk of a successful attack and ensure the integrity and security of their systems.