Description
Tenda AX3 V16.03.12.11 was discovered to contain a command injection vulnerability via the lanip parameter at /goform/AdvSetLanip.
EPSS Score:
10%
Comprehensive Technical Analysis of EUVD-2023-31018
1. Vulnerability Assessment and Severity Evaluation
The vulnerability EUVD-2023-31018, also known as CVE-2023-27240, affects Tenda AX3 devices running firmware version V16.03.12.11. This vulnerability is classified as a command injection flaw via the lanip parameter at the /goform/AdvSetLanip endpoint. 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:
- Attack Vector (AV): Network (N) - The vulnerability is exploitable over the network.
- Attack Complexity (AC): Low (L) - The attack requires minimal skill or resources.
- Privileges Required (PR): None (N) - No special privileges are needed to exploit the vulnerability.
- User Interaction (UI): None (N) - No user interaction is required.
- Scope (S): Unchanged (U) - The vulnerability does not change the security scope.
- Confidentiality (C): High (H) - The vulnerability can lead to a complete breach of confidentiality.
- Integrity (I): High (H) - The vulnerability can lead to a complete breach of integrity.
- Availability (A): High (H) - The vulnerability can lead to a complete breach of availability.
2. Potential Attack Vectors and Exploitation Methods
The command injection vulnerability can be exploited by sending a specially crafted HTTP request to the /goform/AdvSetLanip endpoint with a malicious lanip parameter. This can allow an attacker to execute arbitrary commands on the affected device with the privileges of the web server process. Potential attack vectors include:
- Remote Code Execution (RCE): An attacker can inject commands to execute arbitrary code on the device.
- Data Exfiltration: An attacker can use the vulnerability to exfiltrate sensitive data from the device.
- Denial of Service (DoS): An attacker can disrupt the normal operation of the device by executing commands that crash or overload the system.
3. Affected Systems and Software Versions
The vulnerability specifically affects Tenda AX3 devices running firmware version V16.03.12.11. It is crucial to identify and update all devices running this firmware version to mitigate the risk.
4. Recommended Mitigation Strategies
To mitigate the risk associated with this vulnerability, the following strategies are recommended:
- Firmware Update: Immediately update the firmware of affected Tenda AX3 devices to a version that addresses this vulnerability.
- Network Segmentation: Isolate affected devices from critical networks to limit the potential impact of an exploit.
- Access Control: Implement strict access controls to limit who can access the device's web interface.
- Monitoring and Logging: Enable logging and monitoring to detect any suspicious activity that may indicate an attempted exploit.
- Firewall Rules: Implement firewall rules to block unauthorized access to the device's web interface.
5. Impact on European Cybersecurity Landscape
The presence of this vulnerability in widely used networking devices like the Tenda AX3 underscores the importance of robust cybersecurity measures in the European landscape. The high severity score and the potential for remote code execution make this vulnerability a significant threat to both individual users and organizations. The European Union's focus on cybersecurity, as evidenced by initiatives like the EUVD, highlights the need for continuous monitoring and timely updates to mitigate such risks.
6. Technical Details for Security Professionals
For security professionals, the following technical details are pertinent:
- Exploit Code: The vulnerability can be exploited by injecting commands into the
lanipparameter. For example:/goform/AdvSetLanip?lanip=192.168.1.1;<malicious_command> - Detection: Intrusion detection systems (IDS) and intrusion prevention systems (IPS) can be configured to detect and block suspicious requests to the
/goform/AdvSetLanipendpoint. - Patch Management: Ensure that a robust patch management process is in place to apply updates promptly.
- Incident Response: Develop an incident response plan that includes steps for identifying, containing, and remediating command injection vulnerabilities.
Conclusion
The command injection vulnerability in Tenda AX3 devices running firmware version V16.03.12.11 poses a significant risk to network security. Immediate action, including firmware updates and enhanced security measures, is essential to mitigate this threat. Continuous monitoring and adherence to best practices in cybersecurity will help protect against similar vulnerabilities in the future.