CVE-2020-3211 Explained : Impact and Mitigation

A vulnerability in the web UI of Cisco IOS XE Software could allow an authenticated, remote attacker to execute arbitrary commands with root privileges on the underlying operating system of an affected device.

Understanding CVE-2020-3211

This CVE involves a command injection vulnerability in Cisco IOS XE Software's web UI, potentially leading to system compromise.

What is CVE-2020-3211?

The vulnerability arises from improper input sanitization in the web UI, enabling attackers with administrative access to execute commands with root privileges.

The Impact of CVE-2020-3211

CVSS Base Score: 7.2 (High Severity)
Attack Vector: Network
Confidentiality, Integrity, and Availability Impact: High
Successful exploitation could result in complete system compromise.

Technical Details of CVE-2020-3211

This section delves into the specifics of the vulnerability.

Vulnerability Description

The flaw allows attackers to inject and execute arbitrary commands with elevated privileges through the web UI.

Affected Systems and Versions

Affected Product: Cisco IOS XE Software 16.10.1
Vendor: Cisco
Version: n/a

Exploitation Mechanism

Attack Complexity: Low
Privileges Required: High
Scope: Unchanged
The attacker needs valid administrative access to exploit the vulnerability.

Mitigation and Prevention

Protecting systems from this vulnerability requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-provided patches or updates promptly.
Restrict access to the web UI to authorized personnel only.

Long-Term Security Practices

Regularly monitor and audit system logs for suspicious activities.
Conduct security training for staff to recognize and report potential threats.

Patching and Updates

Regularly check for security advisories and updates from Cisco.