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 2. News & Events
 3. Cybersecurity Advisories
 4. ICS Advisory

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ICS Advisory


GE PACSYSTEMS RX3I

Last Revised
January 16, 2020
Alert Code
ICSA-20-014-01



1. EXECUTIVE SUMMARY

 * CVSS v3 7.5
 * ATTENTION: Exploitable remotely/low skill level to exploit
 * Vendor: GE/Emerson
 * Equipment: PACSystems RX3i
 * Vulnerability: Improper Input Validation


2. RISK EVALUATION

Successful exploitation of this vulnerability could cause the system to change
to halt-mode, resulting in a denial-of-service condition.


3. TECHNICAL DETAILS


3.1 AFFECTED PRODUCTS

Emerson reports this vulnerability affects the following GE PACSystem products
and versions:

 * CPE100: All versions prior to R9.85
 * CPE115: All versions prior to R9.85
 * CPE302: All versions prior to R9.90
 * CPE305: All versions prior to R9.90
 * CPE310: All versions prior to R9.90
 * CRU320: (End of Life; Upgrade to CPE330)
 * CPE330: All versions prior to R9.90
 * CPE400: All versions prior to R9.90
 * CPL410: All versions prior to R9.90


3.2 VULNERABILITY OVERVIEW

3.2.1    IMPROPER INPUT VALIDATION CWE-20(LINK IS EXTERNAL)

Sending specially manipulated packets can cause the module state to change to
halt-mode, resulting in a denial-of-service condition. An operator must reboot
the CPU module after removing battery or energy pack to recover from halt-mode.

CVE-2019-13524 has been assigned to this vulnerability. A CVSS v3 base score of
7.5 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H(link is external)).


3.3 BACKGROUND

 * CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities, Critical
   Manufacturing, Dams, Defense Industrial Base, Energy, Food and Agricultural,
   Government Facilities, Information Technology, Transportation Systems, Water
   and Wastewater Systems
 * COUNTRIES/AREAS DEPLOYED: Worldwide
 * COMPANY HEADQUARTERS LOCATION: United States


3.4 RESEARCHER

Jin Kyung Lee and Yeop Chang of NSR (National Security Research Institute)
reported this vulnerability to CISA.


4. MITIGATIONS

Emerson has acquired the affected products from GE. All inquiries should be
directed to Emerson:

1-888-565-4155

1-434-214-8532 (if toll free 800 option is unavailable)

Tech Support:

support.mas@emerson.com(link sends email)

Sales/Order Support:

customercare.mas@emerson.com(link sends email)

Emerson recommends users upgrade to the following versions:

 * Version R9.85
   * CPE100 – Upgrade Kit: 41G2393-MS10-000-A5.zip(link is external)
   * CPE115 – Upgrade Kit: 41G2556-MS10-000-A2.zip(link is external)
 * Version R9.90
   * CPE302 – Upgrade Kit: CPE302_FW9_90_41G2552-FW01-000-A3.zip(link is
     external)
   * CPE305 – Upgrade Kit: CPE305_FW9_90_41G1733-MS10-000-A20.zip(link is
     external)
   * CPE310 – Upgrade Kit: CPE310_FW9_90_41G1734-MS10-000-A20.zip(link is
     external)
   * CPE330 – Upgrade Kit: CPE330_FW9_90_41G2016-FW01-000-A16.zip(link is
     external)
   * CPE400 – Upgrade Kit: CPE400_FW9_90_41G2376-FW01-000-A7.zip(link is
     external)
   * CPL410 – Upgrade Kit: CPL410_FW9_90_41G2617-FW01-000-A3.zip(link is
     external)

 * Emerson notes that CPU/CRU320 has reached end of life. They recommend users
   upgrade to CPE330.

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 that 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 that VPNs may have vulnerabilities and should be
   updated to the most current version available. Also recognize that VPN is
   only as secure as the 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 us-cert.gov. 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 us-cert.gov 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.


VENDOR

GE


PLEASE SHARE YOUR THOUGHTS

We recently updated our anonymous product survey; we’d welcome your feedback.


RELATED ADVISORIES

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ICS Advisory | ICSA-23-145-01


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MITSUBISHI ELECTRIC MELSEC SERIES CPU MODULE

May 23, 2023
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HITACHI ENERGY’S AFS65X, AFS67X, AFR67X AND AFF66X PRODUCTS

May 23, 2023
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