CVE-2019-19278 : Security Advisory and Response

A security flaw has been discovered in SINAMICS PERFECT HARMONY GH180 Drives models MLFB 6SR32..-.....-...., MLFB 6SR4...-.....-...., and MLFB 6SR5...-.....-...., with option A30 (HMIs 12 inches or larger) in all versions, as well as MLFB 6SR325.-.....-.... (High Availability) in all versions. This vulnerability allows an unauthorized attacker to reset the affected device to a state where the predefined application and operating system protections are not active. Exploiting this flaw requires physical access to the system, but does not require any system privileges or user interaction. By exploiting this vulnerability, an attacker could compromise the confidentiality, integrity, and availability of the device. As of the time of this advisory, there have been no reported instances of this security vulnerability being exploited.

Understanding CVE-2019-19278

A vulnerability has been identified in SINAMICS PERFECT HARMONY GH180 Drives models with specific MLFB numbers, allowing unauthorized access to compromise device security.

What is CVE-2019-19278?

This CVE refers to a security flaw in Siemens AG's SINAMICS PERFECT HARMONY GH180 Drives, potentially enabling attackers to bypass system protections.

The Impact of CVE-2019-19278

Unauthorized attackers can disable critical security mechanisms on affected devices
Compromise of device confidentiality, integrity, and availability
Requires physical access but no system privileges or user interaction

Technical Details of CVE-2019-19278

A detailed overview of the vulnerability and its implications.

Vulnerability Description

Allows attackers to reset devices, disabling security protections
No system privileges or user interaction needed

Affected Systems and Versions

SINAMICS PERFECT HARMONY GH180 Drives with specific MLFB numbers
All versions of the affected models

Exploitation Mechanism

Requires physical access to the system
No system privileges or user interaction necessary

Mitigation and Prevention

Steps to address and prevent the exploitation of this vulnerability.

Immediate Steps to Take

Implement physical security measures to restrict unauthorized access
Regularly monitor and audit device access

Long-Term Security Practices

Conduct regular security assessments and penetration testing
Keep systems updated with the latest security patches

Patching and Updates

Apply manufacturer-recommended patches promptly
Stay informed about security advisories and updates