EUVD-2024-52662

Comprehensive Technical Analysis of EUVD-2024-52662

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2024-52662 pertains to a hardcoded password in the /etc/shadow file of Ubiquiti U6-LR 6.6.65. This vulnerability allows attackers to log in as the root user, effectively granting them full administrative control over the device. The severity of this vulnerability is rated at a base score of 9.8 according to CVSS 3.1, which is classified as critical. The high score is justified by the following vector string:

• CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • AV:N (Network): The vulnerability is exploitable over the network.
  • AC:L (Low): The attack complexity is low, meaning it does not require specialized conditions.
  • PR:N (None): No privileges are required to exploit the vulnerability.
  • UI:N (None): No user interaction is required.
  • S:U (Unchanged): The scope of the vulnerability does not change.
  • C:H (High): Confidentiality impact is high.
  • I:H (High): Integrity impact is high.
  • A:H (High): Availability impact is high.

2. Potential Attack Vectors and Exploitation Methods

Given the nature of the vulnerability, potential attack vectors include:

• Remote Access: Attackers can exploit this vulnerability remotely over the network, making it a significant threat for devices exposed to the internet.
• Local Network Exploitation: Devices on the same local network can also be targeted, especially in environments where network segmentation is poor.
• Automated Scanning: Attackers can use automated tools to scan for vulnerable devices and exploit them en masse.

Exploitation methods may involve:

• Brute Force Attacks: Using the hardcoded password to gain root access.
• Credential Stuffing: Attempting to use the hardcoded password across multiple devices.
• Scripted Attacks: Writing scripts to automate the process of identifying and exploiting vulnerable devices.

3. Affected Systems and Software Versions

The vulnerability specifically affects:

• Ubiquiti U6-LR 6.6.65: This version of the Ubiquiti U6-LR device contains the hardcoded password in the /etc/shadow file.

It is crucial to note that other versions of the Ubiquiti U6-LR or similar devices may also be affected if they share the same firmware base.

4. Recommended Mitigation Strategies

To mitigate this vulnerability, the following strategies are recommended:

• Firmware Update: Immediately update the firmware to a version that addresses this vulnerability. Ubiquiti should release a patch that removes the hardcoded password and ensures secure password management.
• Network Segmentation: Implement network segmentation to isolate vulnerable devices from critical systems.
• Access Control: Enforce strict access control policies to limit who can access the device management interfaces.
• Monitoring and Logging: Implement robust monitoring and logging to detect any unauthorized access attempts.
• Regular Audits: Conduct regular security audits to identify and address similar vulnerabilities.

5. Impact on European Cybersecurity Landscape

The presence of such a critical vulnerability in widely used networking equipment like Ubiquiti U6-LR can have significant implications for the European cybersecurity landscape:

• Increased Risk of Breaches: Organizations and individuals using the affected devices are at a higher risk of data breaches and unauthorized access.
• Compliance Issues: Organizations may face compliance issues with regulations such as GDPR if they fail to address the vulnerability promptly.
• Reputation Damage: Ubiquiti's reputation may be affected, leading to potential loss of trust among customers.
• Widespread Exploitation: Given the ease of exploitation, there is a risk of widespread attacks targeting European organizations and infrastructure.

6. Technical Details for Security Professionals

For security professionals, the following technical details are pertinent:

• Vulnerability Location: The hardcoded password is located in the /etc/shadow file, which is a critical file for user authentication.
• Detection: Security professionals can detect the vulnerability by inspecting the /etc/shadow file for the presence of the hardcoded password.
• Exploitation: Exploitation involves using the hardcoded password to gain root access. This can be done via SSH or other remote access methods.
• Remediation: Remediation involves updating the firmware and ensuring that all default passwords are changed to strong, unique passwords.

Conclusion

The vulnerability EUVD-2024-52662 in Ubiquiti U6-LR 6.6.65 is a critical issue that requires immediate attention. Organizations should prioritize updating their firmware and implementing robust security measures to mitigate the risk. The European cybersecurity landscape must remain vigilant to address such vulnerabilities promptly and effectively.

References

• U6-LR HardCode Vuln
• CVE-2024-54750

This analysis provides a comprehensive overview for cybersecurity professionals to understand and address the vulnerability effectively.