ICS Advisory (ICSA-22-174-04)

Pyramid Solutions EtherNet/IP Adapter Development Kit

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1. EXECUTIVE SUMMARY

  • CVSS v3 9.8
  • ATTENTION: Exploitable remotely, low attack complexity
  • Vendor: Pyramid Solutions, Inc.
  • Equipment: EtherNet/IP Adapter Development Kit
  • Vulnerability: Out-of-bounds Write

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker with access to the EtherNet/IP network to send a specially crafted packet that may result in a denial-of-service condition.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Pyramid Solutions’ products are affected:

  • EtherNet/IP Adapter Development Kit (EADK): Versions 4.4.0 and prior
  • EtherNet/IP Adapter DLL Kit (EIPA): Versions 4.4.0 and prior
  • EtherNet/IP Scanner Development Kit (EDKS): Versions 4.4.0 and prior
  • EtherNet/IP Scanner DLL Kit (EIPS): Versions 4.4.0 and prior

3.2 VULNERABILITY OVERVIEW

3.2.1    OUT-OF-BOUNDS WRITE CWE-787

The affected products are vulnerable to an out-of-bounds write, which may allow an unauthorized attacker to send a specially crafted packet that may result in a denial-of-service condition.

CVE-2022-1737 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing, Financial Services
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

Weidmueller reported this vulnerability to CERT@VDE

4. MITIGATIONS

Pyramid Solutions recommends upgrading any products using the affected versions of EADK, EIPA, EIPS, and ESDK to the latest product revision. Information on the latest version is available at Pyramid Solutions’ website.

The following additional vendor affected by the reported vulnerability has also released security advisories related to this vulnerability:

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:

  • Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet.
  • Locate control system networks and remote devices behind firewalls and isolate them from the business network.
  • When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as its connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on cisa.gov/ics in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.

No known public exploits specifically target this vulnerability.


Contact Information

For any questions related to this report, please contact the CISA at:

Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870

For industrial control systems cybersecurity information:  https://us-cert.cisa.gov/ics 
or incident reporting:  https://us-cert.cisa.gov/report

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