CVE-2019-11202 : Vulnerability Insights and Analysis

A problem has been identified that impacts certain versions of Rancher: v2.0.0 to v2.0.13, v2.1.0 to v2.1.8, and v2.2.0 to 2.2.1. When Rancher is first launched, it automatically generates a default admin user with a commonly used password. The admin user can be removed by the Rancher administrator during the initial setup. However, if Rancher is restarted, the default admin user will be reestablished with the well-known default password. This vulnerability could be exploited by an unauthorized individual who gains access using the default admin credentials. To address this issue, it is recommended to deactivate the default admin user rather than completely deleting them.

Understanding CVE-2019-11202

An issue affecting specific versions of Rancher that allows unauthorized access through default admin credentials.

What is CVE-2019-11202?

This CVE identifies a security flaw in Rancher versions v2.0.0 to v2.0.13, v2.1.0 to v2.1.8, and v2.2.0 to 2.2.1, where a default admin user with a well-known password is automatically created upon initial launch.

The Impact of CVE-2019-11202

Unauthorized individuals can exploit the default admin credentials to gain access to Rancher instances.

Technical Details of CVE-2019-11202

A vulnerability in Rancher versions that allows for unauthorized access through default admin credentials.

Vulnerability Description

Rancher versions v2.0.0 to v2.0.13, v2.1.0 to v2.1.8, and v2.2.0 to 2.2.1 automatically create a default admin user with a commonly used password.

Affected Systems and Versions

Rancher versions v2.0.0 to v2.0.13, v2.1.0 to v2.1.8, and v2.2.0 to 2.2.1.

Exploitation Mechanism

Unauthorized individuals can exploit the default admin credentials to gain unauthorized access.

Mitigation and Prevention

Steps to address and prevent the CVE-2019-11202 vulnerability.

Immediate Steps to Take

Deactivate the default admin user in Rancher to prevent unauthorized access.

Long-Term Security Practices

Regularly review and update user access controls.
Implement strong password policies.

Patching and Updates

Ensure Rancher is updated to versions that have addressed this vulnerability.