CVE-2020-3218 : Security Advisory and Response

A vulnerability in the web UI of Cisco IOS XE Software allows an attacker to execute arbitrary code with root privileges. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2020-3218

This CVE involves a critical vulnerability in Cisco IOS XE Software that could lead to remote code execution with root privileges.

What is CVE-2020-3218?

The vulnerability in the web UI of Cisco IOS XE Software enables a remote attacker with administrative privileges to execute arbitrary code with root access on the underlying Linux shell.

The Impact of CVE-2020-3218

CVSS Base Score: 7.2 (High Severity)
Attack Vector: Network
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
Privileges Required: High
Successful exploitation could allow an attacker to execute arbitrary code with root privileges or bypass licensing requirements on the device.

Technical Details of CVE-2020-3218

This section provides insights into the vulnerability, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability results from improper validation of user-supplied input in the web UI of Cisco IOS XE Software.

Affected Systems and Versions

Affected Product: Cisco IOS XE Software 16.6.1
Vendor: Cisco
Version: n/a

Exploitation Mechanism

An attacker can exploit this vulnerability by creating and uploading malicious files to the affected device, leading to arbitrary code execution with root privileges.

Mitigation and Prevention

Protect your systems from CVE-2020-3218 by following these steps:

Immediate Steps to Take

Apply vendor patches promptly
Monitor network traffic for signs of exploitation
Restrict access to the web UI

Long-Term Security Practices

Regularly update and patch software
Conduct security training for staff

Patching and Updates

Ensure timely installation of security updates and patches provided by Cisco to mitigate the vulnerability.