CVE-2020-28395 : What You Need to Know

A vulnerability has been identified in SCALANCE X-200RNA switch family and SCALANCE X-300 switch family, allowing for potential man-in-the-middle attacks.

Understanding CVE-2020-28395

This CVE identifies a security flaw in Siemens' SCALANCE X-200RNA and SCALANCE X-300 switch families.

What is CVE-2020-28395?

The vulnerability in these devices allows attackers to exploit the lack of a new unique private key creation after a factory reset, potentially leading to decryption of previously captured traffic.

The Impact of CVE-2020-28395

This vulnerability could result in man-in-the-middle attacks, compromising the confidentiality and integrity of network communications.

Technical Details of CVE-2020-28395

Siemens' SCALANCE X-200RNA and SCALANCE X-300 switch families are affected by this vulnerability.

Vulnerability Description

Devices do not generate a new unique private key after a factory reset, leaving them susceptible to man-in-the-middle attacks.

Affected Systems and Versions

Vendor: Siemens
Affected Products:
SCALANCE X-200RNA switch family
Versions Affected: All versions < V3.2.7
SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants)
Versions Affected: All versions < V4.1.0

Exploitation Mechanism

Attackers can exploit this vulnerability to intercept and decrypt network traffic, potentially compromising sensitive information.

Mitigation and Prevention

Immediate Steps to Take:

Implement network segmentation to limit the impact of a potential attack.
Monitor network traffic for any suspicious activity.
Apply the latest security patches and updates provided by Siemens. Long-Term Security Practices:
Regularly review and update cryptographic keys and certificates.
Conduct security assessments and penetration testing to identify and address vulnerabilities.
Educate network administrators and users about secure practices.
Follow industry best practices for network security.

Patching and Updates

Siemens has released patches to address this vulnerability. It is crucial to apply the latest updates to ensure the security of SCALANCE X-200RNA and SCALANCE X-300 switch families.