CVE-2018-0423 : Security Advisory and Response

A vulnerability in the web-based management interface of Cisco RV110W, RV130W, and RV215W routers could allow remote attackers to execute arbitrary code or cause denial of service.

Understanding CVE-2018-0423

This CVE identifies a buffer overflow vulnerability in Cisco RV110W, RV130W, and RV215W routers' web-based management interface.

What is CVE-2018-0423?

The vulnerability in the Guest user feature of the routers' web-based management interface allows unauthorized remote attackers to exploit user-supplied input restrictions, leading to a buffer overflow.

The Impact of CVE-2018-0423

If successfully exploited, attackers can render the device unresponsive, causing denial of service, or execute arbitrary code on the targeted device.

Technical Details of CVE-2018-0423

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability arises from improper boundary restrictions on user-supplied input in the Guest user feature, triggering a buffer overflow condition.

Affected Systems and Versions

Product: Cisco RV130W Wireless-N Multifunction VPN Router Firmware
Vendor: Cisco
Version: n/a

Exploitation Mechanism

Attackers exploit the vulnerability by sending malicious requests to the device, leading to a buffer overflow and potential execution of arbitrary code.

Mitigation and Prevention

Steps to address and prevent exploitation of the vulnerability.

Immediate Steps to Take

Apply patches or updates provided by Cisco promptly.
Restrict network access to the affected devices.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Regularly update firmware and software to the latest versions.
Implement network segmentation to limit the impact of potential attacks.
Conduct regular security assessments and penetration testing.

Patching and Updates

Cisco has released patches to address the vulnerability. Ensure timely installation of these patches to mitigate the risk of exploitation.