CVE-2019-10921 Explained : Impact and Mitigation

A security vulnerability has been identified in LOGO! 8 BM (including SIPLUS variants) in all versions before V8.3, allowing unauthorized access to device passwords stored without encryption.

Understanding CVE-2019-10921

This CVE involves the unencrypted storage of passwords in LOGO! 8 BM devices, potentially compromising device confidentiality.

What is CVE-2019-10921?

The vulnerability in LOGO! 8 BM (incl. SIPLUS variants) allows attackers with access to port 10005/tcp to retrieve device passwords stored without encryption, impacting device confidentiality.

The Impact of CVE-2019-10921

Unauthorized access to device passwords without encryption
Potential compromise of device confidentiality
Exploitable by unauthorized attackers with network access to port 10005/tcp

Technical Details of CVE-2019-10921

This section provides technical insights into the vulnerability.

Vulnerability Description

Vulnerability Type: CWE-256: Unprotected Storage of Credentials
Attack Vector: Network access to port 10005/tcp
Impact: Unauthorized retrieval of device passwords

Affected Systems and Versions

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

Exploitation Mechanism

Attacker with network access to port 10005/tcp
No user interaction required for exploitation

Mitigation and Prevention

Protecting systems from CVE-2019-10921 is crucial for maintaining security.

Immediate Steps to Take

Update affected devices to version V8.3 or higher
Restrict network access to port 10005/tcp
Implement strong password policies

Long-Term Security Practices

Regular security assessments and audits
Employee training on cybersecurity best practices

Patching and Updates

Apply security patches and updates promptly
Monitor vendor advisories for any new security alerts