Description
A command injection vulnerability exists in D-Link DAP-1650 devices when handling UPnP SUBSCRIBE messages. An unauthenticated attacker can exploit this vulnerability to gain command execution on the device as root.
EPSS Score:
68%
Comprehensive Technical Analysis of EUVD-2024-21119
1. Vulnerability Assessment and Severity Evaluation
The vulnerability EUVD-2024-21119, also known as CVE-2024-23625, is a command injection flaw in D-Link DAP-1650 devices. This vulnerability allows an unauthenticated attacker to execute arbitrary commands on the device with root privileges by exploiting the handling of UPnP SUBSCRIBE messages.
Severity Evaluation:
- CVSS Base Score: 9.6
- CVSS Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
The high base score of 9.6 indicates a critical vulnerability. The attack vector (AV:A) is adjacent, meaning the attacker must be on the same local network. The attack complexity (AC:L) is low, and no privileges (PR:N) or user interaction (UI:N) are required. The scope (S:C) is changed, and the impact on confidentiality, integrity, and availability (C:H/I:H/A:H) is high.
2. Potential Attack Vectors and Exploitation Methods
Attack Vectors:
- Local Network Access: The attacker needs to be on the same local network as the vulnerable device.
- UPnP SUBSCRIBE Messages: The attacker can send crafted UPnP SUBSCRIBE messages to the device, which are not properly sanitized, leading to command injection.
Exploitation Methods:
- Command Injection: By injecting malicious commands into the UPnP SUBSCRIBE messages, the attacker can execute arbitrary commands with root privileges.
- Remote Code Execution: The attacker can execute remote code, potentially leading to full control over the device.
3. Affected Systems and Software Versions
Affected Systems:
- D-Link DAP-1650 devices
Software Versions:
- All versions up to and including 1.04B01
4. Recommended Mitigation Strategies
Immediate Mitigation:
- Network Segmentation: Isolate the D-Link DAP-1650 devices from other critical network segments.
- Disable UPnP: If not required, disable the UPnP feature on the device.
- Firewall Rules: Implement strict firewall rules to limit access to the device.
Long-Term Mitigation:
- Firmware Update: Apply the latest firmware updates provided by D-Link as soon as they are available.
- Regular Audits: Conduct regular security audits and vulnerability assessments.
- Monitoring: Implement continuous monitoring to detect any suspicious activities.
5. Impact on European Cybersecurity Landscape
The vulnerability poses a significant risk to European organizations and individuals using D-Link DAP-1650 devices. Given the widespread use of such devices in both home and enterprise environments, the potential for large-scale exploitation is high. This underscores the need for robust cybersecurity measures and timely patch management practices across the EU.
6. Technical Details for Security Professionals
Vulnerability Details:
- Vulnerability Type: Command Injection
- Affected Protocol: UPnP (Universal Plug and Play)
- Exploitation Point: Handling of SUBSCRIBE messages
Exploitation Steps:
- Network Access: Gain access to the local network where the D-Link DAP-1650 device is located.
- Crafted Message: Create a malicious UPnP SUBSCRIBE message with injected commands.
- Send Message: Send the crafted message to the device.
- Command Execution: The device executes the injected commands with root privileges.
Detection and Response:
- Log Analysis: Monitor logs for unusual UPnP SUBSCRIBE messages.
- Intrusion Detection Systems (IDS): Deploy IDS to detect and alert on suspicious network activities.
- Incident Response: Have a well-defined incident response plan to quickly address any detected exploitation attempts.
References:
Conclusion
The command injection vulnerability in D-Link DAP-1650 devices is a critical issue that requires immediate attention. Organizations and individuals should prioritize mitigation strategies, including network segmentation, disabling UPnP, and applying firmware updates. Continuous monitoring and regular security audits are essential to maintain a robust cybersecurity posture. The European cybersecurity landscape must remain vigilant against such vulnerabilities to protect against potential large-scale exploitation.