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CVE-2022-34757 : Vulnerability Insights and Analysis

Learn about CVE-2022-34757, a CWE-327 vulnerability in Easergy P5 devices by Schneider Electric, allowing interception of communication details. Find out the impact, affected versions, and mitigation steps.

A CWE-327 vulnerability has been identified in Easergy P5 devices manufactured by Schneider Electric. This vulnerability allows weak cipher suites to be used in the SSH connection, potentially enabling an attacker to intercept protected communication details.

Understanding CVE-2022-34757

This section delves into the details of the CVE-2022-34757 vulnerability.

What is CVE-2022-34757?

The CVE-2022-34757 vulnerability, classified as CWE-327, involves the use of a broken or risky cryptographic algorithm in the SSH connection between Easergy Pro software and the device. Attackers could exploit weak cipher suites to intercept sensitive communication details.

The Impact of CVE-2022-34757

The vulnerability poses a medium severity threat with an overall CVSS base score of 6.7. It has a high availability impact and integrity impact, although the confidentiality impact is rated as low. The attack complexity is high, and no privileges are required for exploitation.

Technical Details of CVE-2022-34757

This section provides technical insights into the CVE-2022-34757 vulnerability.

Vulnerability Description

The vulnerability arises from the use of weak cipher suites in the SSH connection, which undermines the security of communication between the Easergy Pro software and the Easergy P5 device.

Affected Systems and Versions

Easergy P5 devices with firmware versions prior to V01.401.102 are affected by this vulnerability. It is crucial for users to identify and update all vulnerable devices promptly.

Exploitation Mechanism

Attackers positioned in the adjacent network can exploit this vulnerability without the need for any special privileges. By leveraging weak cipher suites, they can eavesdrop on communication between the software and the device.

Mitigation and Prevention

Protecting systems from CVE-2022-34757 requires immediate actions and long-term security practices.

Immediate Steps to Take

        Update all Easergy P5 devices to the latest firmware version (V01.401.102 or higher) to mitigate the vulnerability effectively.
        Implement secure communication protocols and restrict access to critical systems to authorized personnel only.

Long-Term Security Practices

        Regularly monitor and audit SSH connections to detect any unusual activities or unauthorized access attempts.
        Train personnel on best practices for securely configuring and managing SSH connections to prevent exploitation.

Patching and Updates

Stay informed about security updates and patches released by Schneider Electric for the Easergy P5 devices. Promptly apply these updates to ensure that systems are protected against known vulnerabilities.

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