CVE-2021-40342 : Vulnerability Insights and Analysis

This CVE-2021-40342 article provides insights into a vulnerability concerning the use of default keys for encryption in Hitachi Energy's FOXMAN-UN and UNEM products.

Understanding CVE-2021-40342

CVE-2021-40342 involves the utilization of default keys for encryption in certain versions of Hitachi Energy products, potentially allowing unauthorized access to sensitive information.

What is CVE-2021-40342?

In the affected product versions, default keys are employed for encryption. If exploited, this vulnerability permits attackers to acquire sensitive data and infiltrate network elements managed by the affected products.

The Impact of CVE-2021-40342

The vulnerability, categorized under CAPEC-20 Encryption Brute Forcing, poses a high severity risk due to the potential compromise of confidentiality.

Technical Details of CVE-2021-40342

This section delves into the specific technical aspects of the CVE-2021-40342 vulnerability.

Vulnerability Description

The affected products use default keys for encryption, facilitating unauthorized access to sensitive data.

Affected Systems and Versions

FOXMAN-UN product versions: R16A, R15B, R15A, R14B, R14A, R11B, R11A, R10C, R9C
UNEM product versions: R16A, R15B, R15A, R14B, R14A, R11B, R11A, R10C, R9C

Exploitation Mechanism

Successful exploitation of the default key usage allows attackers to bypass encryption and access sensitive information.

Mitigation and Prevention

Explore the recommended steps to mitigate and prevent vulnerabilities related to CVE-2021-40342.

Immediate Steps to Take

For FOXMAN-UN R16A or UNEM R16A users, refer to the appropriate mitigation actions provided in the products' advisory.
Users of FOXMAN-UN R15B or UNEM R15B and earlier should implement the following measures:
Secure NMS CLIENT/SERVER communication.
Avoid Embedded FOXCST with RADIUS authentication.
Ensure database encryption strength.

Long-Term Security Practices

Regularly review and update encryption keys.
Conduct security audits to identify and address vulnerabilities.

Patching and Updates

Stay informed about upcoming releases that will provide full remediation for the vulnerability.