CVE-2020-3400 : What You Need to Know

A vulnerability in the web UI feature of Cisco IOS XE Software could allow an authenticated, remote attacker to utilize unauthorized parts of the web UI.

Understanding CVE-2020-3400

This CVE involves an authorization bypass vulnerability in Cisco IOS XE Software's web UI feature.

What is CVE-2020-3400?

The vulnerability allows an authenticated attacker to access unauthorized sections of the web UI due to insufficient authorization of web UI access requests.

The Impact of CVE-2020-3400

CVSS Base Score: 8.8 (High Severity)
Attack Vector: Network
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
An attacker could exploit this vulnerability to perform actions of an Admin user, even with Read-Only access.

Technical Details of CVE-2020-3400

This section provides more in-depth technical details of the vulnerability.

Vulnerability Description

The vulnerability in Cisco IOS XE Software allows attackers to access unauthorized parts of the web UI through crafted HTTP requests.

Affected Systems and Versions

Affected Product: Cisco IOS XE Software
Affected Version: Not Applicable

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted HTTP requests to the web UI.

Mitigation and Prevention

Protecting systems from CVE-2020-3400 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-provided patches or updates promptly.
Monitor Cisco's security advisories for any further updates.

Long-Term Security Practices

Implement the principle of least privilege for user access.
Regularly review and update access controls to prevent unauthorized access.
Conduct security training to educate users on identifying and reporting suspicious activities.

Patching and Updates

Cisco may release patches or updates to address this vulnerability. Stay informed through Cisco's security advisories.