CVE-2021-27428 : Security Advisory and Response
Learn about CVE-2021-27428 affecting GE UR family devices. Explore the impact, technical details, and mitigation steps for this critical firmware vulnerability.
GE UR family Unrestricted Upload of File with Dangerous Type is a critical vulnerability affecting GE UR IED firmware versions prior to 8.1x. This vulnerability allows illegitimate users to upgrade firmware without appropriate privileges. Read on to understand the impact, technical details, and mitigation steps for CVE-2021-27428.
Understanding CVE-2021-27428
This section provides detailed insights into the CVE-2021-27428 vulnerability.
What is CVE-2021-27428?
CVE-2021-27428 affects GE UR family devices with firmware versions prior to 8.1x, enabling unauthorized firmware upgrades without proper privileges.
The Impact of CVE-2021-27428
The vulnerability poses a critical threat with a CVSS base score of 9.8, allowing attackers to remotely compromise the integrity and confidentiality of affected systems.
Technical Details of CVE-2021-27428
Explore the technical aspects of CVE-2021-27428 to better comprehend the risk factors involved.
Vulnerability Description
The flaw in GE UR IED firmware allows attackers to bypass firmware validation checks and perform unauthorized upgrades, compromising system integrity.
Affected Systems and Versions
GE UR family devices running firmware versions prior to 8.1x are vulnerable to this exploit, posing a high-risk scenario for impacted systems.
Exploitation Mechanism
Attackers can leverage this vulnerability to remotely upgrade firmware on GE UR devices without requiring any specific user privileges.
Mitigation and Prevention
Discover the recommended steps to mitigate the risks associated with CVE-2021-27428 and safeguard your systems.
Immediate Steps to Take
GE strongly advises users with impacted firmware versions to update their UR devices to firmware Version 8.10 or above to address this vulnerability promptly.
Long-Term Security Practices
Implement network defense-in-depth practices, restrict access to UR IEDs, monitor network traffic, and follow secure configuration guidelines for enhanced protection.
Patching and Updates
Stay informed about GE's publication GES-2021-004 for additional mitigation details and instructions on addressing CVE-2021-27428.