CVE-2020-3331 Explained : Impact and Mitigation

A vulnerability in the web-based management interface of Cisco RV110W Wireless-N VPN Firewall and Cisco RV215W Wireless-N VPN Router could allow remote attackers to execute arbitrary code with root privileges.

Understanding CVE-2020-3331

This CVE involves a critical vulnerability in Cisco RV110W and RV215W Series Routers that could lead to arbitrary code execution.

What is CVE-2020-3331?

The vulnerability stems from improper validation of user-supplied input data in the routers' web-based management interface, enabling attackers to send crafted requests and execute code on affected devices.

The Impact of CVE-2020-3331

The vulnerability has a CVSS base score of 9.8 (Critical) with high impacts on confidentiality, integrity, and availability. Successful exploitation could result in arbitrary code execution with root user privileges.

Technical Details of CVE-2020-3331

This section delves into the specifics of the vulnerability.

Vulnerability Description

The flaw allows unauthenticated remote attackers to execute arbitrary code on affected devices by exploiting the improper validation of user input data in the web-based management interface.

Affected Systems and Versions

Product: Cisco RV110W Wireless-N VPN Firewall Firmware
Vendor: Cisco
Version: Not applicable

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted requests to the targeted devices, leveraging the lack of proper input data validation.

Mitigation and Prevention

Protecting systems from CVE-2020-3331 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-provided patches promptly to mitigate the vulnerability.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update and patch all network devices and systems.
Conduct security training for employees to raise awareness of potential threats.
Employ intrusion detection/prevention systems to enhance network security.

Patching and Updates

Ensure that all affected devices are updated with the latest firmware and security patches to address the vulnerability.