EUVD-2023-34447

Comprehensive Technical Analysis of EUVD-2023-34447

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified in EUVD-2023-34447 pertains to a command insertion flaw in the TOTOLINK X5000R router firmware versions V9.1.0u.6118_B20201102 and V9.1.0u.6369_B20230113. This vulnerability allows an attacker to execute arbitrary commands through the "command" parameter in the setting/setTracerouteCfg function.

Severity Evaluation:

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

The high CVSS score of 9.8 indicates a critical vulnerability. The vector breakdown shows that the attack can be executed over the network (AV:N), requires low complexity (AC:L), does not need any privileges (PR:N) or user interaction (UI:N), and has a high impact on confidentiality, integrity, and availability (C:H/I:H/A:H).

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Command Execution: An attacker can send specially crafted requests to the router's web interface, exploiting the command insertion vulnerability to execute arbitrary commands.
• Network-Based Attacks: Given the network attack vector (AV:N), the vulnerability can be exploited remotely, making it a significant risk for devices exposed to the internet.

Exploitation Methods:

• Direct Exploitation: An attacker can directly target the router's web interface by sending malicious HTTP requests.
• Automated Scripts: Attackers can use automated scripts to scan for vulnerable routers and exploit them en masse.

3. Affected Systems and Software Versions

Affected Systems:

• TOTOLINK X5000R routers

Affected Software Versions:

• Firmware versions V9.1.0u.6118_B20201102
• Firmware versions V9.1.0u.6369_B20230113

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Firmware Update: Ensure that all TOTOLINK X5000R routers are updated to the latest firmware version that addresses this vulnerability.
• Network Segmentation: Isolate the router from the public internet and place it behind a firewall to limit exposure.
• Access Control: Implement strict access controls to limit who can access the router's web interface.

Long-Term Mitigation:

• Regular Patching: Establish a regular patching and update schedule for all network devices.
• Security Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate similar issues.
• Intrusion Detection: Deploy intrusion detection systems (IDS) to monitor for suspicious activity.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to European cybersecurity, particularly for organizations and individuals using TOTOLINK X5000R routers. The potential for remote command execution can lead to unauthorized access, data breaches, and network disruptions. Given the widespread use of routers in both home and enterprise environments, the impact could be far-reaching, affecting both personal and organizational data security.

6. Technical Details for Security Professionals

Vulnerability Details:

• Vulnerable Function: setting/setTracerouteCfg
• Parameter: command
• Exploitation: The vulnerability can be exploited by injecting malicious commands into the command parameter, leading to arbitrary command execution.

Detection and Response:

• Log Analysis: Monitor router logs for unusual command execution or unauthorized access attempts.
• Behavioral Analysis: Use behavioral analysis tools to detect anomalous network traffic patterns indicative of exploitation attempts.
• Incident Response: Develop an incident response plan that includes steps for identifying, containing, and remediating compromised routers.

References:

• GitHub Repository
• Packet Storm Security

Aliases:

• CVE-2023-30013
• GSD-2023-30013

Assigner:

• Mitre

EPSS Score:

• 71 (indicating a high likelihood of exploitation)

ENISA ID:

• Product: n/a
• Vendor: n/a

By addressing this vulnerability promptly and implementing robust security measures, organizations can significantly reduce the risk of exploitation and protect their networks from potential attacks.