EUVD-2025-205656

Comprehensive Technical Analysis of EUVD-2025-205656

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified as EUVD-2025-205656 pertains to an "Unrestricted Upload of File with Dangerous Type" in the MapSVG plugin, developed by RomanCode. This vulnerability allows an attacker to upload a web shell to a web server, potentially leading to full server compromise. The CVSS (Common Vulnerability Scoring System) base score of 9.9 indicates a critical severity level. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H breaks down as follows:

• AV:N (Attack Vector: Network): The vulnerability is exploitable remotely over the network.
• AC:L (Attack Complexity: Low): The attack requires minimal skill or resources.
• PR:L (Privileges Required: Low): The attacker needs low-level privileges, such as a basic user account.
• UI:N (User Interaction: None): No user interaction is required for the attack to succeed.
• S:C (Scope: Changed): The vulnerability affects a component that is outside the security scope of the vulnerable component.
• C:H (Confidentiality: High): The vulnerability has a high impact on the confidentiality of the system.
• I:H (Integrity: High): The vulnerability has a high impact on the integrity of the system.
• A:H (Availability: High): The vulnerability has a high impact on the availability of the system.

2. Potential Attack Vectors and Exploitation Methods

The primary attack vector involves exploiting the unrestricted file upload functionality in the MapSVG plugin. An attacker could:

1. Upload a Web Shell: By uploading a malicious file (e.g., a PHP script) disguised as a legitimate file type, the attacker can gain remote code execution capabilities.
2. Execute Arbitrary Code: Once the web shell is uploaded, the attacker can execute arbitrary commands on the server, leading to further exploitation such as data exfiltration, lateral movement, or installation of additional malware.
3. Persistent Access: The attacker can maintain persistent access to the compromised server, making it difficult to detect and remediate the breach.

3. Affected Systems and Software Versions

The vulnerability affects the MapSVG plugin versions from n/a through 8.7.3. Any WordPress site using this plugin within the specified version range is at risk. It is crucial to identify and update all instances of the plugin to a patched version as soon as possible.

4. Recommended Mitigation Strategies

1. Immediate Patching: Upgrade the MapSVG plugin to a version that addresses this vulnerability.
2. Input Validation: Implement strict input validation and file type checks to prevent the upload of dangerous file types.
3. Access Controls: Enforce strict access controls and permissions to limit the ability of users to upload files.
4. Monitoring and Logging: Enable comprehensive logging and monitoring to detect any suspicious file upload activities.
5. Web Application Firewalls (WAF): Deploy WAFs to filter out malicious upload attempts and protect against known attack patterns.
6. Regular Security Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate similar issues proactively.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to the European cybersecurity landscape, particularly for organizations and individuals using the MapSVG plugin. The potential for remote code execution and server compromise can lead to data breaches, financial losses, and reputational damage. Given the critical nature of the vulnerability, it is essential for European cybersecurity authorities to disseminate information and guidance to affected parties promptly.

6. Technical Details for Security Professionals

• Vulnerability Type: Unrestricted Upload of File with Dangerous Type
• Affected Component: MapSVG plugin for WordPress
• Exploitation Steps:
  1. Identify a vulnerable instance of the MapSVG plugin.
  2. Craft a malicious file (e.g., a PHP web shell) with a dangerous type.
  3. Upload the file through the plugin's file upload functionality.
  4. Access the uploaded file to execute arbitrary commands on the server.
• Detection Methods:
  • Monitor for unusual file upload activities.
  • Check for the presence of unexpected or unauthorized files in the upload directory.
  • Use intrusion detection systems (IDS) to detect suspicious network traffic.
• Remediation Steps:
  • Update the MapSVG plugin to the latest version.
  • Implement file type whitelisting and strict input validation.
  • Conduct a thorough security audit to ensure no other vulnerabilities are present.

By addressing this vulnerability promptly and comprehensively, organizations can mitigate the risk of exploitation and protect their digital assets effectively.