EUVD-2024-52663

Comprehensive Technical Analysis of EUVD-2024-52663

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified in the EUVD entry EUVD-2024-52663 pertains to a hardcoded password in the /etc/shadow file of the COMFAST CF-WR630AX v2.7.0.2 firmware. This vulnerability allows attackers to gain root access to the device, effectively compromising its security.

Severity Evaluation:

• CVSS Base Score: 9.8 (Critical)
• CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The high base score of 9.8 indicates a critical vulnerability. The CVSS vector breakdown shows that the vulnerability can be exploited over the network (AV:N) with low complexity (AC:L), requires no privileges (PR:N), and does not need user interaction (UI:N). The impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H), making this a severe threat.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

1. Remote Access: Attackers can exploit this vulnerability remotely over the network.
2. Local Access: If an attacker gains physical access to the device, they can exploit the hardcoded password to gain root access.

Exploitation Methods:

1. Network Scanning: Attackers can scan the network for devices running the vulnerable firmware version.
2. Brute Force Attacks: Using the hardcoded password, attackers can attempt to log in as root.
3. Automated Scripts: Attackers can use automated scripts to exploit the vulnerability across multiple devices.

3. Affected Systems and Software Versions

Affected Systems:

• COMFAST CF-WR630AX devices running firmware version 2.7.0.2.

Software Versions:

• Firmware version 2.7.0.2 of the COMFAST CF-WR630AX.

4. Recommended Mitigation Strategies

1. Firmware Update: Immediately update the firmware to a version that addresses this vulnerability.
2. Network Segmentation: Isolate vulnerable devices on a separate network segment to limit exposure.
3. Access Control: Implement strict access controls and monitor for unauthorized access attempts.
4. Intrusion Detection: Deploy intrusion detection systems (IDS) to monitor for suspicious activity.
5. Password Management: Ensure that all default and hardcoded passwords are changed to strong, unique passwords.

5. Impact on European Cybersecurity Landscape

The presence of hardcoded passwords in critical infrastructure devices poses a significant risk to the European cybersecurity landscape. This vulnerability can be exploited to compromise network security, leading to data breaches, unauthorized access, and potential disruption of services. The widespread use of such devices in both residential and commercial settings amplifies the potential impact.

6. Technical Details for Security Professionals

Vulnerability Details:

• Location: The hardcoded password is located in the /etc/shadow file.
• Access Level: Root access.
• Exploitation: Attackers can use the hardcoded password to log in as root, gaining full control over the device.

Detection Methods:

1. File Integrity Monitoring: Monitor the /etc/shadow file for unauthorized changes.
2. Log Analysis: Review system logs for unauthorized login attempts and successful logins using the hardcoded password.
3. Network Monitoring: Use network monitoring tools to detect unusual traffic patterns indicative of exploitation attempts.

Mitigation Steps:

1. Patch Management: Ensure that all devices are running the latest firmware version.
2. Configuration Management: Regularly review and update device configurations to remove hardcoded passwords.
3. Security Audits: Conduct regular security audits to identify and mitigate similar vulnerabilities.

References:

• COMFAST CF-WR630AX HardCode Vuln

Conclusion

The hardcoded password vulnerability in the COMFAST CF-WR630AX v2.7.0.2 firmware is a critical threat that requires immediate attention. Organizations should prioritize updating the firmware and implementing robust security measures to mitigate the risk. Continuous monitoring and regular security audits are essential to maintain the integrity and security of networked devices.