CVE-2021-22283 : Security Advisory and Response

A detailed article outlining the CVE-2021-22283 vulnerability affecting ABB's Relion protection relays and other related products.

Understanding CVE-2021-22283

This section provides an overview of the CVE-2021-22283 vulnerability affecting multiple ABB products.

What is CVE-2021-22283?

CVE-2021-22283 refers to an Improper Initialization vulnerability in ABB's Relion protection relays, enabling Communication Channel Manipulation.

The Impact of CVE-2021-22283

The vulnerability has a CVSS base score of 6.2, with a medium severity rating. It allows an attacker to manipulate communication channels, posing a high availability impact.

Technical Details of CVE-2021-22283

This section delves into the technical aspects of the CVE-2021-22283 vulnerability.

Vulnerability Description

The Improper Initialization vulnerability affects various ABB products, including Relion protection relays and Remote Monitoring and Control units, allowing Communication Channel Manipulation.

Affected Systems and Versions

Products like Relion protection relays - 611, 615, and 620 series, as well as REX640 and SMU615 units, are affected by this vulnerability across different firmware versions.

Exploitation Mechanism

The vulnerability can be exploited by attackers to manipulate communication channels on the affected ABB products.

Mitigation and Prevention

This section outlines the steps to mitigate and prevent exploitation of CVE-2021-22283.

Immediate Steps to Take

Users should update the firmware of the affected products to the patched versions provided by ABB to prevent exploitation.

Long-Term Security Practices

Implementing network segmentation, access control, and regular security assessments can enhance the long-term security of the affected products.

Patching and Updates

Regularly check for security updates and patches from ABB to address vulnerabilities and enhance the security posture of the affected products.