EUVD-2023-32958

Comprehensive Technical Analysis of EUVD-2023-32958

1. Vulnerability Assessment and Severity Evaluation

Vulnerability Description: The vulnerability identified as EUVD-2023-32958 pertains to an "Unrestricted Upload of File with Dangerous Type" in the "Manager for Icomoon" plugin. This issue allows an attacker to upload files of dangerous types, potentially leading to arbitrary code execution or other malicious activities.

Severity Evaluation: The CVSS (Common Vulnerability Scoring System) base score of 9.1 indicates a critical severity level. The vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H breaks down as follows:

• AV:N - Attack Vector: Network, meaning the vulnerability is exploitable over the network.
• AC:L - Attack Complexity: Low, indicating that the attack is relatively straightforward to execute.
• PR:H - Privileges Required: High, suggesting that the attacker needs high-level privileges to exploit the vulnerability.
• UI:N - User Interaction: None, meaning no user interaction is required for the attack to succeed.
• S:C - Scope: Changed, indicating that the vulnerability affects a component outside the security scope of the vulnerable component.
• C:H - Confidentiality: High, suggesting a significant impact on data confidentiality.
• I:H - Integrity: High, indicating a significant impact on data integrity.
• A:H - Availability: High, meaning a significant impact on system availability.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Network-Based Attacks: Given the AV:N vector, attackers can exploit this vulnerability remotely over the network.
• Privileged Access: The PR:H vector indicates that the attacker needs high-level privileges, which could be obtained through other vulnerabilities or social engineering.

Exploitation Methods:

• Arbitrary File Upload: An attacker could upload a malicious file (e.g., a PHP script) that, when executed, could lead to remote code execution.
• Web Shell Upload: Uploading a web shell could provide the attacker with persistent access to the server.
• Data Exfiltration: Uploading scripts that exfiltrate sensitive data from the server.

3. Affected Systems and Software Versions

Affected Software:

• Manager for Icomoon: Versions from n/a through 2.0.

Affected Systems:

• Any system running the vulnerable versions of the "Manager for Icomoon" plugin, particularly those with high-level user privileges.

4. Recommended Mitigation Strategies

Immediate Actions:

• Update Software: Ensure that the "Manager for Icomoon" plugin is updated to a version that addresses this vulnerability.
• Restrict File Uploads: Implement strict file type and size validation for uploads.
• Access Control: Limit high-level privileges to trusted users only.
• Monitoring: Implement continuous monitoring for suspicious file upload activities.

Long-Term Strategies:

• Regular Audits: Conduct regular security audits and vulnerability assessments.
• Patch Management: Establish a robust patch management process to ensure timely updates.
• Security Training: Provide security training for users and administrators to recognize and mitigate potential threats.

5. Impact on European Cybersecurity Landscape

Regulatory Compliance:

• GDPR: The vulnerability could lead to data breaches, impacting GDPR compliance and resulting in significant fines.
• NIS Directive: Organizations in critical sectors must ensure robust cybersecurity measures to comply with the NIS Directive.

Economic Impact:

• Financial Losses: Data breaches and system downtime could result in financial losses for affected organizations.
• Reputation Damage: Compromised systems could lead to reputational damage and loss of customer trust.

Cybersecurity Ecosystem:

• Interconnected Risks: The vulnerability highlights the interconnected nature of cyber risks, where a single vulnerable component can compromise an entire system.

6. Technical Details for Security Professionals

Detection:

• Log Analysis: Monitor server logs for unusual file upload activities.
• Intrusion Detection Systems (IDS): Deploy IDS to detect and alert on suspicious file upload patterns.

Prevention:

• Web Application Firewalls (WAF): Implement WAFs to filter out malicious file upload attempts.
• Secure Coding Practices: Ensure that developers follow secure coding practices to prevent similar vulnerabilities in the future.

Response:

• Incident Response Plan: Develop and maintain an incident response plan to quickly address any detected exploitation attempts.
• Forensic Analysis: Conduct forensic analysis to understand the scope and impact of any successful exploitation.

Conclusion: The "Unrestricted Upload of File with Dangerous Type" vulnerability in the "Manager for Icomoon" plugin is critical and requires immediate attention. Organizations should prioritize updating the plugin, implementing strict file upload controls, and enhancing their overall cybersecurity posture to mitigate the risks associated with this vulnerability.

References:

• Patchstack Vulnerability Database

Aliases:

• CVE-2023-29386
• GSD-2023-29386

Assigner:

• Patchstack

EPSS:

• 1

ENISA ID Product:

• [{"id":"4afd5ab6-8df1-336b-81e3-034dc2fc2cae","product":{"name":"Manager for Icomoon"},"product_version":"n/a ≤2.0"}]

ENISA ID Vendor:

• [{"id":"fdbac7c4-1edf-358c-a0fd-989385863737","vendor":{"name":"Julien Crego"}}]