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AUSCERT External Security Bulletin Redistribution
ESB-2017.1137
Rockwell Automation ControlLogix 5580 and CompactLogix 5380
8 May 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: Rockwell ControlLogix 5580
Rockwell CompactLogix 5380
Publisher: ICS-CERT
Operating System: Network Appliance
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-6024
Original Bulletin:
https://ics-cert.us-cert.gov/advisories/ICSA-17-094-05
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Advisory (ICSA-17-094-05)
Rockwell Automation ControlLogix 5580 and CompactLogix 5380
Original release date: May 04, 2017
Legal Notice
All information products included in http://ics-cert.us-cert.gov are provided
"as is" for informational purposes only. The Department of Homeland Security
(DHS) does not provide any warranties of any kind regarding any information
contained within. DHS does not endorse any commercial product or service,
referenced in this product or otherwise. Further dissemination of this product
is governed by the Traffic Light Protocol (TLP) marking in the header. For
more information about TLP, see http://www.us-cert.gov/tlp/.
CVSS v3 6.8
ATTENTION: Remotely exploitable.
Vendor: Rockwell Automation
Equipment: ControlLogix 5580 and CompactLogix 5380
Vulnerability: Resource Exhaustion
REPOSTED INFORMATION
This advisory was originally posted to the NCCIC Portal on April 4, 2017, and
is being released to the NCCIC/ICS-CERT web site.
AFFECTED PRODUCTS
The following versions of ControlLogix 5580 and CompactLogix 5380,
programmable automation controllers, are affected:
ControlLogix 5580 controllers V28.011, V28.012, and V28.013,
ControlLogix 5580 controllers V29.011,
CompactLogix 5380 controllers V28.011, and
CompactLogix 5380 controllers V29.011.
IMPACT
Successful exploitation of this vulnerability could cause the device that the
attacker is accessing to become unavailable.
MITIGATION
Rockwell Automation recommends updating to the latest version of ControlLogix
5580 controllers, Version 30.011 or later, which is available at the following
location:
http://compatibility.rockwellautomation.com/Pages/MultiProductDownload.aspx?Keyword=1756-L8&crumb=112
(link is external)
Rockwell Automation recommends updating to the latest version of CompactLogix
5380 controllers, Version 30.011 or later, which is available at the following
location:
http://compatibility.rockwellautomation.com/Pages/MultiProductDownload.aspx?Keyword=5069-L&crumb=112
(link is external)
For more information on this vulnerability and more detailed mitigation
instructions, please see Rockwell Automations advisory labeled ControlLogix
5580 and CompactLogix 5380 Programmable Automation Controller Denial of
Service, Version 1.0, April 4, 2017, at the following location:
https://rockwellautomation.custhelp.com/app/answers/detail/a_id/1041420 (link
is external)
As well as Rockwell Automations security page:
http://www.rockwellautomation.com/security/overview.page (link is external)
ICS-CERT and Rockwell Automation recommend that users take defensive measures
to minimize the risk of exploitation of this vulnerability. Specifically,
users should:
Block all traffic to EtherNet/IP or other CIP protocol-based devices from
outside the Manufacturing Zone by blocking or restricting access to Port
2222/TCP and UDP and Port 44818/TCP and UDP using proper network
infrastructure controls, such as firewalls, UTM devices, or other security
appliances. For more information on TCP/UDP ports used by Rockwell Automation
Products, see Knowledgebase Article ID 898270 which is available at the
following location:
https://rockwellautomation.custhelp.com/app/answers/detail/a_id/898270 (link
is external)
Minimize network exposure for all control system devices and/or systems,
and help confirm that they are not accessible from the Internet.
Locate control system networks and devices behind firewalls, and use best
practices when isolating them from the business network. The Common Plant-wide
Ethernet (CPwE) guide provides recommendations for deploying a plant-wide
architecture: Industrial Firewalls within a CPwE Architecture
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.
ICS-CERT reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.
ICS-CERT also provides a section for control systems security recommended
practices on the ICS-CERT web page. 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 in the ICSCERT Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies, that is available for download from the ICS-CERT web site.
Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to ICS-CERT for
tracking and correlation against other incidents.
No known public exploits specifically target this vulnerability. High skill
level is needed to exploit.
VULNERABILITY OVERVIEW
RESOURCE EXHAUSTION CWE-400
This vulnerability may allow an attacker to cause a denial of service
condition by sending a series of specific CIP-based commands to the
controller.
CVE-2017-6024 has been assigned to this vulnerability. A CVSS v3 base score of
6.8 has been calculated; the CVSS vector string is
(AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H).
BACKGROUND
Critical Infrastructure Sectors: Critical Manufacturing, Food and Agriculture,
Transportation Systems, and Water
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Milwaukee, Wisconsin
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