CVE-2019-10920 : What You Need to Know

A security flaw has been identified in LOGO! 8 BM (including SIPLUS variants) where project data stored on the device can be decrypted due to a hardcoded encryption key.

Understanding CVE-2019-10920

This CVE involves a vulnerability in Siemens' LOGO! 8 BM (incl. SIPLUS variants) impacting confidentiality due to a hardcoded encryption key.

What is CVE-2019-10920?

The vulnerability allows unauthorized access to project data through port 10005/tcp without user interaction.
An attacker with network access to port 10005/tcp can exploit this flaw.
The security issue affects the confidentiality of the device.

The Impact of CVE-2019-10920

Unauthorized individuals can decrypt project data compromising the device's confidentiality.
No public exploitation of this vulnerability has been reported as of the advisory publication.

Technical Details of CVE-2019-10920

This section provides technical insights into the vulnerability.

Vulnerability Description

The flaw allows decryption of project data due to a fixed encryption key.

Affected Systems and Versions

Product: LOGO! 8 BM (incl. SIPLUS variants)
Vendor: Siemens
Versions affected: All versions < V8.3

Exploitation Mechanism

Attackers with network access to port 10005/tcp can exploit the vulnerability.

Mitigation and Prevention

Protecting systems from CVE-2019-10920 is crucial.

Immediate Steps to Take

Implement network segmentation to restrict access to port 10005/tcp.
Monitor network traffic for any unauthorized access attempts.

Long-Term Security Practices

Regularly update firmware and security patches provided by Siemens.
Conduct security assessments to identify and mitigate similar vulnerabilities.

Patching and Updates

Apply the latest patches and updates from Siemens to address the vulnerability.