high
7.5
CWE
400
Advisory Published
Updated

CVE-2021-31340

First published: Tue Jun 08 2021(Updated: )

A vulnerability has been identified in SIMATIC RF166C (All versions > V1.1 and < V1.3.2), SIMATIC RF185C (All versions > V1.1 and < V1.3.2), SIMATIC RF186C (All versions > V1.1 and < V1.3.2), SIMATIC RF186CI (All versions > V1.1 and < V1.3.2), SIMATIC RF188C (All versions > V1.1 and < V1.3.2), SIMATIC RF188CI (All versions > V1.1 and < V1.3.2), SIMATIC RF360R (All versions < V2.0), SIMATIC Reader RF610R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF610R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF610R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF615R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF615R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF615R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF650R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF650R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF650R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF650R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF680R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF680R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF680R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF680R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF685R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF685R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF685R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF685R FCC (All versions > V3.0 < V4.0). Affected devices do not properly handle large numbers of incoming connections. An attacker may leverage this to cause a Denial-of-Service situation.

Credit: productcert@siemens.com

Affected SoftwareAffected VersionHow to fix
Siemens Simatic Rf166c Firmware>1.1<1.3.2
Siemens Simatic Rf166c
Siemens Simatic Rf185c Firmware>1.1<1.3.2
Siemens Simatic Rf185c
Siemens Simatic Rf186c Firmware>1.1<1.3.2
Siemens Simatic Rf186c
Siemens Simatic Rf186ci Firmware>1.1<1.3.2
Siemens Simatic Rf186ci
Siemens Simatic Rf188c Firmware>1.1<1.3.2
Siemens Simatic Rf188c
Siemens Simatic Rf188ci Firmware>1.1<1.3.2
Siemens Simatic Rf188ci
Siemens Simatic Rf360r Firmware<2.0
Siemens Simatic Rf360r
Siemens Simatic Reader Rf610r Cmiit Firmware>=3.0<4.0
Siemens Simatic Reader Rf610r Cmiit
Siemens Simatic Reader Rf610r Etsi Firmware>=3.0<4.0
Siemens Simatic Reader Rf610r Etsi
Siemens Simatic Reader Rf610r Fcc Firmware>=3.0<4.0
Siemens Simatic Reader Rf610r Fcc
Siemens Simatic Reader Rf615r Cmiit Firmware>=3.0<4.0
Siemens Simatic Reader Rf615r Cmiit
Siemens Simatic Reader Rf615r Etsi Firmware>=3.0<4.0
Siemens Simatic Reader Rf615r Etsi
Siemens Simatic Reader Rf615r Fcc Firmware>=3.0<4.0
Siemens Simatic Reader Rf615r Fcc
Siemens Simatic Reader Rf650r Cmiit Firmware>=3.0<4.0
Siemens Simatic Reader Rf650r Cmiit
Siemens Simatic Reader Rf650r Etsi Firmware>=3.0<4.0
Siemens Simatic Reader Rf650r Etsi
Siemens Simatic Reader Rf650r Fcc Firmware>=3.0<4.0
Siemens Simatic Reader Rf650r Fcc
Siemens Simatic Reader Rf650r Arib Firmware>=3.0<4.0
Siemens Simatic Reader Rf650r Arib
Siemens Simatic Reader Rf680r Cmiit Firmware>=3.0<4.0
Siemens Simatic Reader Rf680r Cmiit
Siemens Simatic Reader Rf680r Etsi Firmware>=3.0<4.0
Siemens Simatic Reader Rf680r Etsi
Siemens Simatic Reader Rf680r Fcc Firmware>=3.0<4.0
Siemens Simatic Reader Rf680r Fcc
Siemens Simatic Reader Rf680r Arib Firmware>=3.0<4.0
Siemens Simatic Reader Rf680r Arib
Siemens Simatic Reader Rf685r Cmiit Firmware>=3.0<4.0
Siemens Simatic Reader Rf685r Cmiit
Siemens Simatic Reader Rf685r Etsi Firmware>=3.0<4.0
Siemens Simatic Reader Rf685r Etsi
Siemens Simatic Reader Rf685r Fcc Firmware>=3.0<4.0
Siemens Simatic Reader Rf685r Fcc
Siemens Simatic Reader Rf685r Arib Firmware>=3.0<4.0
Siemens Simatic Reader Rf685r Arib

Remedy

https://cert-portal.siemens.com/productcert/pdf/ssa-787292.pdf

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Reference Links

Frequently Asked Questions

  • What is the vulnerability ID?

    The vulnerability ID is CVE-2021-31340.

  • Which products are affected by the vulnerability?

    The SIMATIC RF166C, SIMATIC RF185C, SIMATIC RF186C, SIMATIC RF186CI, and SIMATIC RF188C are affected.

  • What is the severity of CVE-2021-31340?

    The severity of CVE-2021-31340 is high with a CVSS score of 7.5.

  • How do I fix CVE-2021-31340?

    To fix CVE-2021-31340, update to versions higher than V1.1 and lower than V1.3.2 for the affected products.

  • Where can I find more information about CVE-2021-31340?

    You can find more information about CVE-2021-31340 at https://cert-portal.siemens.com/productcert/pdf/ssa-787292.pdf.

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