AFFECTED PRODUCTS AND SOLUTION

Affected Product and Versions	Remediation
IE/PB LINK PN IO (incl. SIPLUS NET variants): All versions < V4.0.1	Update to V4.0.1 or later version https://support.industry.siemens.com/cs/ww/en/view/109780330/ See further recommendations from section Workarounds and Mitigations
SCALANCE S602: All versions < V4.1	Update to V4.1 Update is only available via Siemens Support contact Upgrade hardware to successor product from SCALANCE SC-600 family (https://support.industry.siemens.com/cs/document/109756957) and apply patches when available, or follow recommendations from section Workarounds and Mitigations See further recommendations from section Workarounds and Mitigations
SCALANCE S612: All versions < V4.1	Update to V4.1 Update is only available via Siemens Support contact Upgrade hardware to successor product from SCALANCE SC-600 family (https://support.industry.siemens.com/cs/document/109756957) and apply patches when available, or follow recommendations from section Workarounds and Mitigations See further recommendations from section Workarounds and Mitigations
SCALANCE S623: All versions < V4.1	Update to V4.1 Update is only available via Siemens Support contact Upgrade hardware to successor product from SCALANCE SC-600 family (https://support.industry.siemens.com/cs/document/109756957) and apply patches when available, or follow recommendations from section Workarounds and Mitigations See further recommendations from section Workarounds and Mitigations
SCALANCE S627-2M: All versions < V4.1	Update to V4.1 Update is only available via Siemens Support Contact Upgrade hardware to successor product from SCALANCE SC-600 family (https://support.industry.siemens.com/cs/document/109756957) and apply patches when available, or follow recommendations from section Workarounds and Mitigations See further recommendations from section Workarounds and Mitigations
SIMATIC CP 343-1 Advanced (6GK7343-1GX31-0XE0): All versions	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIMATIC CP 443-1 (6GK7443-1EX30-0XE0): All versions	Currently no fix is available See recommendations from section Workarounds and Mitigations
SIMATIC CP 443-1 Advanced (6GK7443-1GX30-0XE0): All versions	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIMATIC CP 443-1 OPC UA (6GK7443-1UX00-0XE0): All versions	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIMATIC CP 1623 (6GK1162-3AA00): All versions < V14.00.15.00_51.25.00.01	The updated firmware is contained in SIMATIC NET PC Software V14 Update 14 or later version or SIMATIC NET PC Software V16 or later version https://support.industry.siemens.com/cs/ww/en/view/109775589/ See further recommendations from section Workarounds and Mitigations
SIMATIC CP 1626 (6GK1162-6AA01): All versions < V1.1.1	Update to V1.1.1 or later version https://support.industry.siemens.com/cs/us/en/view/109792924/ See further recommendations from section Workarounds and Mitigations
SIMATIC CP 1628 (6GK1162-8AA00): All versions < V14.00.15.00_51.25.00.01	Update to SIMATIC NET PC Software V16 or later version https://support.industry.siemens.com/cs/ww/en/view/109775589/ See further recommendations from section Workarounds and Mitigations
SIPLUS NET CP 343-1 Advanced (6AG1343-1GX31-4XE0): All versions	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS NET CP 443-1 (6AG1443-1EX30-4XE0): All versions	Currently no fix is available See recommendations from section Workarounds and Mitigations
SIPLUS NET CP 443-1 Advanced (6AG1443-1GX30-4XE0): All versions	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIPLUS TIM 1531 IRC (6AG1543-1MX00-7XE0): All versions < V2.0	Update to V2.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109774204/ See further recommendations from section Workarounds and Mitigations
TIM 1531 IRC (6GK7543-1MX00-0XE0): All versions < V2.0	Update to V2.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109774204/ See further recommendations from section Workarounds and Mitigations

WORKAROUNDS AND MITIGATIONS

Siemens has identified the following specific workarounds and mitigations that customers can apply to reduce the risk:

• Disable SNMP if this is supported by the product (refer to the product documentation). Disabling SNMP fully mitigates the vulnerability.
• Protect network access to port 161/udp of affected devices.
• Apply cell protection concept and implement Defense-in-Depth: https://www.siemens.com/cert/operational-guidelines-industrial-security.
• Use VPN for protecting network communication between cells.
• For SCALANCE S-600 family (S602, S612, S623, S627-2M): migrate to a successor product within the SCALANCE SC-600 family, V2.1 or later version. For details refer to the notice of discontinuation.

Product specific remediations or mitigations can be found in the section Affected Products and Solution.

Please follow the General Security Recommendations.

GENERAL SECURITY RECOMMENDATIONS

As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens’ operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.

Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity

PRODUCT DESCRIPTION

SIMATIC CP 343-1 and CP 443-1 are communication processors (CP) designed to enable Ethernet communication for SIMATIC S7-300/S7-400 CPUs.

SIMATIC CP 1623, CP 1626 and CP 1628 are PCI express cards for connection to Industrial Ethernet.

SIPLUS extreme products are designed for reliable operation under extreme conditions and are based on SIMATIC, LOGO!, SITOP, SINAMICS, SIMOTION, SCALANCE or other devices. SIPLUS devices use the same firmware as the product they are based on.

The SCALANCE S-600 devices (S602, S612, S623, S627-2M) are used to protect trusted industrial networks from untrusted networks. The S-600 devices are superseded by the SCALANCE SC-600 devices (SC622-2C, SC632-2C, SC636-2C, SC642-2C, SC646-2C), or the SCALANCE S615.

The SCALANCE SC-600 devices (SC622-2C, SC632-2C, SC636-2C, SC642-2C, SC646-2C) are used to protect trusted industrial networks from untrusted networks. They allow filtering incoming and outgoing network connections in different ways.

TIM 1531 IRC is a communication module for SIMATIC S7-1500, S7-400, S7-300 with SINAUT ST7, DNP3 and IEC 60870-5-101/104 with three RJ45 interfaces for communication via IP-based networks (WAN / LAN) and a RS 232/RS 485 interface for communication via classic WAN networks.

VULNERABILITY CLASSIFICATION

The vulnerability classification has been performed by using the CVSS scoring system in version 3.1 (CVSS v3.1) (https://www.first.org/cvss). The CVSS environmental score is specific to the customer’s environment and will impact the overall CVSS score. The environmental score should therefore be individually defined by the customer to accomplish final scoring.

An additional classification has been performed using the CWE classification, a community-developed list of common software security weaknesses. This serves as a common language and as a baseline for weakness identification, mitigation, and prevention efforts. A detailed list of CWE classes can be found at: https://cwe.mitre.org/.

ACKNOWLEDGMENTS

Siemens thanks the following parties for their efforts:

• Artem Zinenko from Kaspersky Lab for coordinated disclosure

ADDITIONAL INFORMATION

For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT:

https://www.siemens.com/cert/advisories

HISTORY DATA

V1.0 (2020-02-11): Publication Date

V1.1 (2020-07-14): Added solution for IE/PB LINK PN IO

V1.2 (2020-08-11): Informed about successor products for the SCALANCE S-600 family

V1.3 (2021-02-09): Added solution for SIMATIC NET CP 1626

V1.4 (2021-04-13): Added solution for SCALANCE S602, SCALANCE S612, SCALANCE S623, and SCALANCE S627-2M

V1.5 (2022-02-08): No remediation planned for SIMATIC CP 443-1 OPC UA, SIMATIC CP 343-1 Advanced, SIPLUS NET CP 343-1 Advanced

V1.6 (2022-04-12): Updated remediation for SIMATIC CP 1623

V1.7 (2022-06-14): No fix planned for SIMATIC CP 343-1 Advanced

TERMS OF USE

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