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ID

VDE-2020-050

Published

2021-02-15 14:33 (CET)

Last update

2021-02-15 14:33 (CET)

Vendor(s)

Pepperl+Fuchs SE

Product(s)

Article No° Product Name Affected Version(s)
IC-KP2-1HB17-2V1D <= 18-31766H
IC-KP2-2HB17-2V1D <= 18-31440H
IC-KP-B17-AIDA1 <= 18-31785F

Summary

Critical vulnerability has been discovered in the utilized component 499ES EtherNet/IP Stack by Real Time Automation (RTA).

CVE ID

CVE-2020-25159 

Last Update:

March 4, 2021, 1:05 p.m.

Severity

9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) 

Weakness

Stack-based Buffer Overflow  (CWE-121) 

Summary

499ES EtherNet/IP (ENIP) Adaptor Source Code is vulnerable to a stack-based buffer overflow, which may allow an attacker to send a specially crafted packet that may result in a denial-of-service condition or code execution.

Details

nvd.nist.gov 

Impact

Pepperl+Fuchs analyzed and identified affected devices.
Remote attackers may exploit the vulnerability sending specially crafted packages that may result in a denial-of-service condition or code execution.

Solution

Mitigation

An external protective measure is required.

  • Minimize network exposure for affected products and ensure that they are not accessible via the Internet.
  • Isolate affected products from the corporate network.
  • If remote access is required, use secure methods such as virtual private networks (VPNs).

Reported by

Sharon Brizinov of Claroty reported this vulnerability to CISA.
Coordinated by CERT@VDE