[Control systems] Siemens security advisory

Number: AV19-265
Date: 26 November 2019

On 12 November 2019 Siemens released security updates to address vulnerabilities in the following products:
Desigo PX automation controllers:
• PXC00-E.D, PXC50-E.D, PXC100-E.D, PXC200-E.D with Desigo PX Web modules
• PXA40-W0, PXA40-W1, PXA40-W2: All firmware versions prior to V6.00.320
• PXC00-U, PXC64-U, PXC128-U with Desigo PX Web modules
• PXA30-W0, PXA30-W1, PXA30-W2: All firmware versions prior to V6.00.320
• PXC22.1-E.D, PXC36-E.D, PXC36.1-E.D with activated web server: All firmware versions prior to V6.00.320

Networking modules from Mentor Nucleus:
• Nucleus NET: All versions
• Nucleus RTOS: All versions
• Nucleus ReadyStart for ARM, MIPS, and PPC: All versions prior to v2017.02.2 with patch “Nucleus 2017.02.02 Nucleus NET Patch”
• Nucleus SafetyCert: All versions
• Nucleus Source Code: All versions
• VSTAR: All versions

Siemens hardware:
• S7-1200: all versions

Successful exploitation of these vulnerabilities may allow a remote actor to cause a denial of service or compromise CompromiseThe intentional or unintentional disclosure of information, which adversely impacts its confidentiality, integrity, or availability. the integrity IntegrityThe ability to protect information from being modified or deleted unintentionally or when it’s not supposed to be. Integrity helps determine that information is what it claims to be. Integrity also applies to business processes, software application logic, hardware, and personnel. of the systems affected, or access protected information.
The Cyber Centre encourages users and administrators to review the following advisories and apply the necessary manufacturer update:
https://cert-portal.siemens.com/productcert/pdf/ssa-434032.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-898181.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-686531.pdf

Note to Readers
The Canadian Centre for Cyber Security Cyber securityThe protection of digital information, as well as the integrity of the infrastructure housing and transmitting digital information. More specifically, cyber security includes the body of technologies, processes, practices and response and mitigation measures designed to protect networks, computers, programs and data from attack, damage or unauthorized access so as to ensure confidentiality, integrity and availability. (Cyber Centre) operates as part of the Communications Security Establishment.  We are Canada’s national authority on cyber security and we lead the government’s response to cyber security events. As Canada's national computer security incident response team, the Cyber Centre works in close collaboration with government departments, critical infrastructure Critical infrastructureProcesses, systems, facilities, technologies, networks, assets, and services essential to the health, safety, security, or economic well-being of Canadians and the effective functioning of government. Critical infrastructure can be stand-alone or interconnected and interdependent within and across provinces, territories, and national borders. Disruptions of critical infrastructure could result in catastrophic loss of life, adverse economic effects, and significant harm to public confidence. , Canadian businesses and international partners to prepare for, respond to, mitigate, and recover from cyber events. We do this by providing authoritative advice and support, and coordinating information sharing and incident response. The Cyber Centre is outward-facing, welcoming partnerships that help build a stronger, more resilient cyber space in Canada.