ICSA-20-343-09

icsaUScisa_csaf_ot

Siemens SIMATIC Controller Web Servers

view advisory published 2020-12-08

Successful exploitation of this vulnerability could allow an attacker to cause a denial-of-service condition.

01

describes (1)

Related CVEs.

IDseverity exploitable
CVE-2020-15796UShigh7.5—
A vulnerability has been identified in SIMATIC ET 200SP Open Controller (incl. SIPLUS variants) (V20.8), SIMATIC S7-1500 Software Controller (V20.8). The web server of the affected…
02

references

External citations — patches, advisories, analysis.

03

remediations (4)

  • MitigationSIMATIC ET 200SP Open Controller (incl. SIPLUS variants)

    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

  • MitigationSIMATIC S7-1500 Software Controller

    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

  • FixedSIMATIC ET 200SP Open Controller (incl. SIPLUS variants)

    If the PC Station web server does not restart automatically Windows reboot is required. This can be done while the control system is running as the PLC control functionality is not affected.

  • FixedSIMATIC S7-1500 Software Controller

    If the PC Station web server does not restart automatically Windows reboot is required. This can be done while the control system is running as the PLC control functionality is not affected.

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