EUVD-2023-28167

Comprehensive Technical Analysis of EUVD-2023-28167

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2023-28167, also known as CVE-2023-24104, affects Ubiquiti Networks UniFi Dream Machine Pro v7.2.95. This vulnerability allows attackers to bypass domain restrictions via crafted packets. The CVSS (Common Vulnerability Scoring System) base score of 9.8 indicates a critical severity level. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H breaks down as follows:

• AV:N - Attack Vector: Network
• AC:L - Attack Complexity: Low
• PR:N - Privileges Required: None
• UI:N - User Interaction: None
• S:U - Scope: Unchanged
• C:H - Confidentiality Impact: High
• I:H - Integrity Impact: High
• A:H - Availability Impact: High

This high score underscores the critical nature of the vulnerability, indicating that it can be exploited remotely with low complexity, requiring no privileges or user interaction, and resulting in high impacts on confidentiality, integrity, and availability.

2. Potential Attack Vectors and Exploitation Methods

Given the CVSS vector, the primary attack vector is network-based. Attackers can exploit this vulnerability by sending specially crafted packets to the UniFi Dream Machine Pro. The low complexity and lack of required privileges or user interaction make this vulnerability particularly dangerous. Potential exploitation methods include:

• Network Scanning: Identifying vulnerable devices on the network.
• Packet Crafting: Creating and sending malicious packets designed to bypass domain restrictions.
• Automated Scripts: Using automated tools to exploit the vulnerability en masse.

3. Affected Systems and Software Versions

The vulnerability specifically affects Ubiquiti Networks UniFi Dream Machine Pro running firmware version 7.2.95. It is crucial to note that other versions may also be affected, but this has not been confirmed. Organizations using this device should prioritize updating to a patched version as soon as possible.

4. Recommended Mitigation Strategies

To mitigate the risk associated with this vulnerability, the following strategies are recommended:

• Patch Management: Immediately update the UniFi Dream Machine Pro to the latest firmware version provided by Ubiquiti Networks.
• Network Segmentation: Isolate critical network segments to limit the potential impact of an attack.
• Intrusion Detection Systems (IDS): Deploy IDS to monitor network traffic for suspicious activity.
• Firewall Configuration: Implement strict firewall rules to block unauthorized access.
• Regular Audits: Conduct regular security audits and vulnerability assessments.

5. Impact on European Cybersecurity Landscape

The European cybersecurity landscape is significantly impacted by this vulnerability due to the widespread use of Ubiquiti Networks devices in both enterprise and consumer environments. The high severity score and ease of exploitation make it a prime target for cybercriminals. Organizations and individuals in Europe must be vigilant and proactive in addressing this vulnerability to prevent potential breaches and data loss.

6. Technical Details for Security Professionals

For security professionals, the following technical details are pertinent:

• Detection: Implement network monitoring tools to detect unusual traffic patterns indicative of crafted packets.
• Response: Develop an incident response plan that includes steps for isolating affected devices, applying patches, and conducting forensic analysis.
• Prevention: Ensure that all network devices are regularly updated and that security best practices are followed.
• References:
  • GitHub Issue: https://github.com/f1veT/BUG/issues/1
  • MITRE ATT&CK Technique: https://attack.mitre.org/techniques/T1090/004/

By understanding the technical aspects and implementing the recommended mitigation strategies, organizations can effectively manage the risk posed by EUVD-2023-28167 and protect their networks from potential attacks.