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AUSCERT External Security Bulletin Redistribution
ESB-2019.2348
Advisory (icsa-19-178-03) ABB CP635 HMI
28 June 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: ABB CP635 HMI
Publisher: ICS CERT
Operating System: Network Appliance
Impact/Access: Increased Privileges -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-7225
Original Bulletin:
https://www.us-cert.gov/ics/advisories/icsa-19-178-03
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ICS Advisory (ICSA-19-178-03)
ABB CP635 HMI
Original release date: June 27, 2019
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/ .
1. EXECUTIVE SUMMARY
o CVSS v3 8.8
o ATTENTION: Exploitable from adjacent network/low skill level to exploit
o Vendor: ABB
o Equipment: CP635 HMI
o Vulnerability: Use of Hard-coded Credentials
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow an attacker to
prevent legitimate access to an affected system node, remotely cause an
affected system node to stop, take control of an affected system node, or
insert and run arbitrary code in an affected system node.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
ABB reports the vulnerability affects the following CP635 HMI products:
o CP620, order code: 1SAP520100R0001, revision index G1 with BSP UN31 v1.76
and prior
o CP620, order code: 1SAP520100R4001, revision index G1 with BSP UN31 v1.76
and prior
o CP620-WEB, order code: 1SAP520200R0001, revision index G1 with BSP UN31
v1.76 and prior
o CP630, order code: 1SAP530100R0001, revision index G1 with BSP UN31 v1.76
and prior
o CP630-WEB, order code: 1SAP530200R0001, revision index G1 with BSP UN31
v1.76 and prior
o CP635, order code: 1SAP535100R0001, revision index G1 with BSP UN31 v1.76
and prior
o CP635, order code: 1SAP535100R5001, revision index G1 with BSP UN31 v1.76
and prior
o CP635-B, order code: 1SAP535100R2001, revision index G1 with BSP UN31 v1.76
and prior
o CP635-WEB, order code: 1SAP535200R0001, revision index G1 with BSP UN31
v1.76 and prior
3.2 VULNERABILITY OVERVIEW
3.2.1 USE OF HARD-CODED CREDENTIALS CWE-798
The ABB CP635 HMI component implements hidden administrative accounts used
during the provisioning phase of the HMI interface.
CVE-2019-7225 has been assigned to this vulnerability. A CVSS v3 base score of
8.8 has been calculated; the CVSS vector string is ( AV:A/AC:L/PR:N/UI:N/S:U/
C:H/I:H/A:H ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Switzerland
3.4 RESEARCHER
ABB reported this vulnerability to NCCIC.
4. MITIGATIONS
ABB recommends users apply the BSP update on affected CP600 control panels at
their earliest convenience.
o New version of PB610 Panel Builder 600 v2.8.0.424, which is provided via
Automation Builder 2.2 SP2 .
o New version of BSP (board support package) UN31 v2.31 .
Please see ABB cybersecurity advisory document number 3ADR010376 for more
information about this vulnerability, and two other security issues and their
mitigations.
NCCIC 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.
o Do not click web links or open unsolicited attachments in email messages.
o Refer to Recognizing and Avoiding Email Scams for more information on
avoiding email scams.
o Refer to Avoiding Social Engineering and Phishing Attacks for more
information on social engineering attacks.
o Only use software from trusted sources.
NCCIC reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.
NCCIC 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
on the ICS-CERT website 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 NCCIC for tracking
and correlation against other incidents.
No known public exploits specifically target this vulnerability.
For any questions related to this report, please contact the NCCIC at:
Email: NCCICCUSTOMERSERVICE@hq.dhs.gov
Toll Free: 1-888-282-0870
The NCCIC continuously strives to improve its products and services. You can
help by choosing one of the links below to provide feedback about this product.
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The University of Queensland
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