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AUSCERT External Security Bulletin Redistribution
Advisory (icsa-20-014-01) GE PACSystems RX3i
16 January 2020
AusCERT Security Bulletin Summary
Product: GE PACSystem products
Operating System: Network Appliance
Impact/Access: Denial of Service -- Remote/Unauthenticated
CVE Names: CVE-2019-13524
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ICS Advisory (ICSA-20-014-01)
GE PACSystems RX3i
Original release date: January 14, 2020
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1. EXECUTIVE SUMMARY
o CVSS v3 7.5
o ATTENTION: Exploitable remotely/low skill level to exploit
o Vendor: GE/Emerson
o Equipment: PACSystems RX3i
o 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
o CPE100: All versions prior to R9.85
o CPE115: All versions prior to R9.85
o CPE302: All versions prior to R9.90
o CPE305: All versions prior to R9.90
o CPE310: All versions prior to R9.90
o CRU320: (End of Life; Upgrade to CPE330)
o CPE330: All versions prior to R9.90
o CPE400: All versions prior to R9.90
o CPL410: All versions prior to R9.90
3.2 VULNERABILITY OVERVIEW
3.2.1 IMPROPER INPUT VALIDATION CWE-20
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/
o 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
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: United States
Yeop Chang reported this vulnerability to CISA.
Emerson has acquired the affected products from GE. All inquiries should be
directed to Emerson:
1-434-214-8532 (if toll free 800 option is unavailable)
Emerson recommends users upgrade to the following versions:
o Version R9.85
CPE100 - Upgrade Kit: 41G2393-MS10-000-A5.zip
CPE115 - Upgrade Kit: 41G2556-MS10-000-A2.zip
o Version R9.90
CPE302 - Upgrade Kit: CPE302_FW9_90_41G2552-FW01-000-A3.zip
CPE305 - Upgrade Kit: CPE305_FW9_90_41G1733-MS10-000-A20.zip
CPE310 - Upgrade Kit: CPE310_FW9_90_41G1734-MS10-000-A20.zip
CPE330 - Upgrade Kit: CPE330_FW9_90_41G2016-FW01-000-A16.zip
CPE400 - Upgrade Kit: CPE400_FW9_90_41G2376-FW01-000-A7.zip
CPL410 - Upgrade Kit: CPL410_FW9_90_41G2617-FW01-000-A3.zip
o 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:
o Minimize network exposure for all control system devices and/or systems,
and ensure that they are not accessible from the Internet .
o Locate control system networks and remote devices behind firewalls, and
isolate them from the business network.
o 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
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.
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