EUVD-2024-52789

Comprehensive Technical Analysis of EUVD-2024-52789

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified in Raisecom MSG1200, MSG2100E, MSG2200, and MSG2300 v3.90 is critical. The affected component, /upload_sysconfig.php, allows for arbitrary file uploads through a crafted form name, potentially leading to unauthorized access to server permissions.

Severity Evaluation:

• Base Score: 9.1 (Critical)
• Base Score Version: CVSS 3.1
• Base Score Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

The CVSS vector indicates:

• 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): None (N)

This vulnerability is severe due to its high impact on confidentiality and integrity, combined with the ease of exploitation.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Exploitation: An attacker can exploit this vulnerability over the network without needing local access or user interaction.
• Arbitrary File Upload: By crafting a suitable form name, an attacker can upload arbitrary files to the server.

Exploitation Methods:

• Web Shell Upload: An attacker could upload a web shell to gain remote command execution capabilities.
• Malicious Scripts: Uploading malicious scripts that can be executed on the server to perform various actions, such as data exfiltration or further exploitation.

3. Affected Systems and Software Versions

Affected Systems:

• Raisecom MSG1200
• Raisecom MSG2100E
• Raisecom MSG2200
• Raisecom MSG2300

Software Versions:

• v3.90

4. Recommended Mitigation Strategies

Immediate Actions:

• Patch Management: Apply the latest security patches provided by Raisecom.
• Access Control: Restrict access to the web interface to trusted IP addresses.
• File Upload Validation: Implement strict validation on file uploads to ensure only authorized file types are accepted.

Long-Term Strategies:

• Regular Audits: Conduct regular security audits and vulnerability assessments.
• Intrusion Detection: Deploy intrusion detection systems (IDS) to monitor for suspicious activities.
• User Training: Educate users on the risks associated with file uploads and the importance of following security best practices.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations using the affected Raisecom devices, particularly within the European Union. Unauthorized access to server permissions can lead to data breaches, loss of sensitive information, and potential disruption of services. Given the critical nature of the vulnerability, it is essential for organizations to prioritize mitigation efforts to protect against potential attacks.

6. Technical Details for Security Professionals

Vulnerability Details:

• Component: /upload_sysconfig.php
• Exploit Method: Crafting a suitable form name to upload arbitrary files.

Detection and Response:

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

References:

• GitHub Gist

Aliases:

• CVE-2024-55516

Assigner:

• Mitre

EPSS:

• N/A

ENISA ID Product:

• [{"id":"c513009d-ac5b-3cff-a8f8-f64a1775347e","product":{"name":"n/a"},"product_version":"n/a"}]

ENISA ID Vendor:

• [{"id":"85ac6909-7234-35a9-af50-058dbfb9afb8","vendor":{"name":"n/a"}}]

In conclusion, the vulnerability in Raisecom devices requires immediate attention from cybersecurity professionals to mitigate the risk of unauthorized access and potential data breaches. Organizations should prioritize patching and implementing robust security measures to protect their systems.