CVE-2022-27581 Explained : Impact and Mitigation

This article provides details about CVE-2022-27581, which involves the use of a broken or risky cryptographic algorithm in SICK RFU61x firmware version <v2.25, leading to potential decryption of encrypted data by a low-privileged remote attacker.

Understanding CVE-2022-27581

This section explains the impact, technical details, and mitigation steps for CVE-2022-27581.

What is CVE-2022-27581?

The vulnerability in SICK RFU61x firmware version <v2.25 allows a low-privileged remote attacker to decrypt encrypted data using weak cipher suites requested via the SSH interface.

The Impact of CVE-2022-27581

The vulnerability enables unauthorized decryption of data, posing a risk of exposing sensitive information and compromising the security of affected systems.

Technical Details of CVE-2022-27581

Below are the technical aspects of CVE-2022-27581.

Vulnerability Description

The issue arises from the insecure cryptographic algorithm implementation in SICK RFU61x firmware, particularly versions prior to <v2.25, facilitating decryption by unauthorized parties.

Affected Systems and Versions

SICK RFU61x firmware versions earlier than <v2.25 are impacted by this vulnerability, potentially allowing attackers to exploit weak cipher suites for decryption.

Exploitation Mechanism

A low-privileged remote attacker can exploit this vulnerability by manipulating cipher suite settings via the SSH interface to decrypt encrypted data.

Mitigation and Prevention

Learn how to protect your systems and data from CVE-2022-27581.

Immediate Steps to Take

Immediately update the SICK RFU61x firmware to version 2.25 or higher to patch the vulnerability and prevent unauthorized decryption of encrypted data.

Long-Term Security Practices

Adopt secure cryptographic algorithms and configurations, restrict SSH access, and regularly update firmware to fortify your system against cryptographic vulnerabilities.

Patching and Updates

Stay informed about security patches and updates released by SICK AG to address vulnerabilities in the RFU61x firmware. Follow the recommended installation procedures to ensure your system's security.