high
8.6
CWE
787 94
Advisory Published
Updated

CVE-2021-20987: Hilscher: EtherNet/IP stack crash for specific CIP service

First published: Tue Feb 16 2021(Updated: )

A denial of service and memory corruption vulnerability was found in Hilscher EtherNet/IP Core V2 prior to V2.13.0.21that may lead to code injection through network or make devices crash without recovery.

Credit: info@cert.vde.com

Affected SoftwareAffected VersionHow to fix
Hilscher Ethernet\/ip Adapter Firmware>=2.0<2.13.0.21
Hilscher Ethernet\/ip Adapter
Pepperl-fuchs Wcs Firmware<=1.2.1
Pepperl-fuchs Wcs3b-ls510
Pepperl-fuchs Wcs3b-ls510-om
Pepperl-fuchs Wcs3b-ls510d
Pepperl-fuchs Wcs3b-ls510d-om
Pepperl-fuchs Wcs3b-ls510dh
Pepperl-fuchs Wcs3b-ls510dh-om
Pepperl-fuchs Wcs3b-ls510h
Pepperl-fuchs Wcs3b-ls510h-om
Pepperl-fuchs Pxv100-f200-b25-v1d Firmware<=1.10.0
Pepperl-fuchs Pxv100-f200-b25-v1d
Pepperl-fuchs Pxv100i-f200-b25-v1d Firmware<=1.10.0
Pepperl-fuchs Pxv100i-f200-b25-v1d
Pepperl-fuchs Pcv100-f200-b25-v1d-6011-6720 Firmware<=1.10.0
Pepperl-fuchs Pcv100-f200-b25-v1d-6011-6720
Pepperl-fuchs Pcv50-f200-b25-v1d Firmware<=1.10.0
Pepperl-fuchs Pcv50-f200-b25-v1d
Pepperl-fuchs Pcv80-f200-b25-v1d Firmware<=1.10.0
Pepperl-fuchs Pcv80-f200-b25-v1d
Pepperl-fuchs Pcv100-f200-b25-v1d-6011 Firmware<=1.10.0
Pepperl-fuchs Pcv100-f200-b25-v1d-6011

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Reference Links

Frequently Asked Questions

  • What is the vulnerability ID for this denial of service and memory corruption vulnerability?

    The vulnerability ID for this denial of service and memory corruption vulnerability is CVE-2021-20987.

  • What is the severity of CVE-2021-20987?

    CVE-2021-20987 has a severity value of 8.6 (high).

  • Which software versions are affected by CVE-2021-20987?

    Hilscher EtherNet/IP Core V2 prior to V2.13.0.21 is affected by CVE-2021-20987.

  • How can this vulnerability be exploited?

    This vulnerability can be exploited through network to perform code injection or cause devices to crash without recovery.

  • Is Hilscher Ethernet/ip Adapter firmware vulnerable to CVE-2021-20987?

    Yes, Hilscher Ethernet/ip Adapter firmware versions before V2.13.0.21 are vulnerable to CVE-2021-20987.

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