CVE-2020-3147 : Vulnerability Insights and Analysis

A vulnerability in the web UI of Cisco Small Business Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

Understanding CVE-2020-3147

This CVE involves a denial of service vulnerability in Cisco Small Business Switches.

What is CVE-2020-3147?

The vulnerability in the web UI of Cisco Small Business Switches allows an attacker to trigger a DoS condition by sending a malicious request, causing an unexpected reload of the device.

The Impact of CVE-2020-3147

CVSS Base Score: 8.6 (High)
Attack Vector: Network
Attack Complexity: Low
Availability Impact: High
Scope: Changed

Technical Details of CVE-2020-3147

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability is a result of improper validation of requests sent to the web interface of affected devices, leading to a DoS condition upon successful exploitation.

Affected Systems and Versions

Affected Product: Cisco Small Business 300 Series Managed Switches
Vendor: Cisco
Vulnerable Versions: Firmware releases prior to 1.3.7.18

Exploitation Mechanism

The attacker can exploit this vulnerability by sending a malicious request to the web interface of the affected device, causing an unexpected reload and subsequent DoS condition.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the impact of this vulnerability.

Immediate Steps to Take

Update to the latest firmware version (1.3.7.18 or higher) to eliminate the vulnerability.
Monitor network traffic for any suspicious activity targeting the web interface.

Long-Term Security Practices

Regularly update firmware and security patches to prevent future vulnerabilities.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Stay informed about security advisories from Cisco and apply patches promptly to secure your devices.