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ICSA-19-043-02  ·  Published 2019-02-12  ·  View on CISA ICS-CERT ↗

ICSA-19-043-02 Siemens EN100 Ethernet Communication Module and SIPROTEC 5 Relays

CVSS 7.5 HIGH

CVEs (1)

Remediations

  • Update to V4.35 - Download: https://support.industry.siemens.com/cs/us/en/view/109745821. Applying the update causes the module to go through a single restart cycle.
  • See recommendations from section Workaround and Mitigations
  • Ethernet communication modules Update to firmware version V7.82 for the following device types: 6MD85, 6MD86, 7SS85, 7KE85, 7UM85, 7SA87, 7SD87, 7SL87, 7VK87, 7SA82, 7SA86, 7SD82, 7SD86, 7SL82, 7SL86, 7SJ86, 7SK82, 7SK85, 7SJ82, 7SJ85, 7UT82, 7UT85, 7UT86, and 7UT87. - Download: https://support.industry.siemens.com/ Search for "SIPROTEC 5 - DIGSI Device Drivers V7.8x". The firmware version V7.82 for the communications modules can also be found on each device specific download page: See under "Additional DIGSI Device Driver - V7.8x", article "Protocols". Applying the update causes the module to go through a single restart cycle.
  • communication modules Update to firmware version V7.58 for the following device types: 6MD85, 6MD86, 7SS85, 7KE85, 7UM85, 7SA87, 7SD87, 7SL87, 7VK87, 7SA82, 7SA86, 7SD82, 7SD86, 7SL82, 7SL86, 7SJ86, 7SK82, 7SK85, 7SJ82, 7SJ85, 7UT82, 7UT85, 7UT86, and 7UT87. - Download: https://support.industry.siemens.com/ Search for "SIPROTEC 5 - DIGSI Device Drivers V7.58". The firmware version V7.58 for the communications modules can also be found on each device specific download page: See in the “Previous Versions” section, article “Protocols”. Applying the update causes the module to go through a single restart cycle.
  • Siemens has identified the following specific workarounds and mitigations thatcustomers can apply to reduce the risk: Block access to port 102/tcp e.g. with an external firewall.

Affected Vendors

Siemens

Affected Products (7)

Siemens · Firmware variant IEC 61850 for EN100 Ethernet module <V4.35
Siemens · Firmware variant MODBUS TCP for EN100 Ethernet module vers:all/*
Siemens · Firmware variant DNP3 TCP for EN100 Ethernet module vers:all/*
Siemens · Firmware variant IEC104 for EN100 Ethernet module vers:all/*
Siemens · Firmware variant Profinet IO for EN100 Ethernet module vers:all/*
Siemens · SIPROTEC 5 relays with CPU variants CP300 and CP100 and the respective <V7.82
Siemens · SIPROTEC 5 relays with CPU variants CP200 and the respective Ethernet <V7.58

Affected Sectors

Multiple

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