CVE-2023-30757 in TIA Portal
Summary
by MITRE • 06/13/2023
A vulnerability has been identified in Totally Integrated Automation Portal (TIA Portal) V14 (All versions), Totally Integrated Automation Portal (TIA Portal) V15 (All versions), Totally Integrated Automation Portal (TIA Portal) V15.1 (All versions), Totally Integrated Automation Portal (TIA Portal) V16 (All versions), Totally Integrated Automation Portal (TIA Portal) V17 (All versions), Totally Integrated Automation Portal (TIA Portal) V18 (All versions). The know-how protection feature in affected products does not properly update the encryption of existing program blocks when a project file is updated.
This could allow attackers with access to the project file to recover previous - yet unprotected - versions of the project without the knowledge of the know-how protection password.
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Analysis
by VulDB Data Team • 07/08/2023
The vulnerability identified as CVE-2023-30757 affects Siemens Totally Integrated Automation Portal (TIA Portal) across multiple versions from V14 through V18, representing a significant weakness in the software's intellectual property protection mechanisms. This flaw specifically targets the know-how protection feature which is designed to safeguard proprietary automation code and programming logic from unauthorized access and reverse engineering. The vulnerability stems from improper handling of encryption updates when project files undergo modifications, creating a persistent security gap that undermines the intended protection of industrial control system programming.
The technical nature of this vulnerability lies in the failure of the encryption system to properly refresh or re-encrypt existing program blocks when project files are updated or modified. This creates a scenario where attackers with legitimate access to project files can exploit the system to recover previously unprotected versions of the code, effectively bypassing the password-based protection mechanisms that should secure sensitive automation logic. The flaw represents a failure in the cryptographic implementation and key management processes that are fundamental to protecting industrial control system assets. This issue aligns with CWE-310, which addresses cryptographic weaknesses and improper implementation of encryption mechanisms in software systems.
The operational impact of this vulnerability extends beyond simple code exposure, as it fundamentally compromises the security posture of industrial automation environments where TIA Portal is deployed. Organizations using affected versions of TIA Portal face the risk of intellectual property theft, unauthorized access to critical control logic, and potential disruption of industrial processes. Attackers could potentially recover sensitive automation programs that were previously thought to be protected, including proprietary control algorithms, safety logic, and system configurations that are essential for operational security. This vulnerability particularly affects environments where industrial control systems are integrated with corporate networks, creating additional attack surface for threat actors seeking to exploit operational technology infrastructure.
The implications of this vulnerability are particularly concerning within the context of industrial cybersecurity frameworks and align with ATT&CK techniques for credential access and defense evasion. The flaw enables attackers to perform unauthorized code recovery operations without detection, potentially allowing them to analyze control logic for system exploitation or to develop targeted attacks against industrial processes. Organizations should implement immediate mitigation strategies including restricting access to project files, implementing additional authentication layers, and conducting thorough security assessments of their industrial control system environments. The vulnerability also highlights the importance of proper cryptographic key management and the need for regular security updates in industrial automation platforms, as outlined in various cybersecurity standards and best practices for operational technology security.