CVE-2021-22669 : Exploit Details and Defense Strategies

A vulnerability has been identified in Advantech WebAccess/SCADA Versions 9.0.1 and prior that could allow a low-privileged user to escalate privileges on the system.

Understanding CVE-2021-22669

This CVE-2021-22669 impacts the WebAccess/SCADA portal by granting unauthorized access to system administrators.

What is CVE-2021-22669?

The vulnerability stems from incorrect default permissions set on the 'Project Management' page, enabling a low-privileged user to change an admin's password and potentially login as an administrator.

The Impact of CVE-2021-22669

If exploited, this security flaw could result in unauthorized access and the ability to perform malicious actions under the guise of an administrator.

Technical Details of CVE-2021-22669

The vulnerability is categorized under CWE-732: INCORRECT PERMISSION ASSIGNMENT FOR CRITICAL RESOURCE CWE-732.

Vulnerability Description

The flaw lies in the default permissions of the 'Project Management' page, impacting Advantech WebAccess/SCADA Versions 9.0.1 and earlier.

Affected Systems and Versions

Advantech WebAccess/SCADA Versions 9.0.1 and prior are affected by this security issue.

Exploitation Mechanism

An attacker could exploit this vulnerability by leveraging the default permissions on the 'Project Management' page to update an admin's password and gain unauthorized access.

Mitigation and Prevention

To safeguard against CVE-2021-22669, immediate steps and ongoing security practices are recommended.

Immediate Steps to Take

Ensure strong, unique passwords, monitor system logs for suspicious activities, and restrict access to critical system components.

Long-Term Security Practices

Regularly update and patch WebAccess/SCADA, implement the principle of least privilege, and conduct security audits.

Patching and Updates

Stay informed about security advisories, apply patches promptly, and follow best practices to enhance system security.