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AUSCERT External Security Bulletin Redistribution
ESB-2020.2295
Advisory (icsa-20-184-02) ABB System 800xA Information Manager
3 July 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: ABB System 800xA Information Manager
Publisher: ICSA
Operating System: Network Appliance
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2020-8477
Original Bulletin:
https://www.us-cert.gov/ics/advisories/icsa-20-184-02
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ICS Advisory (ICSA-20-184-02)
ABB System 800xA Information Manager
Original release date: July 02, 2020
Legal Notice
All information products included in https://us-cert.gov/ics 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 https://www.us-cert.gov/tlp/ .
1. EXECUTIVE SUMMARY
o CVSS v3 8.8
o ATTENTION: Exploitable remotely/low skill level to exploit
o Vendor: ABB
o Equipment: System 800xA Information Manager
o Vulnerability: Cross-site Scripting
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow an attacker to inject
and execute arbitrary code on the information manager server.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of System 800xA Information Manager are affected:
o Versions prior to 5.1 Rev E/5.1 FP4 Rev E TC6
o Versions prior to 6.0.3.3 RU1
o Versions prior to 6.1 RU1
3.2 VULNERABILITY OVERVIEW
3.2.1 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE
SCRIPTING') CWE-79
The affected product is vulnerable to a remote code execution attack that may
allow an attacker to remotely execute arbitrary code. Successful exploitation
of this vulnerability requires luring a user (on a host with the vulnerable IM
component installed) to access a malicious website that instructs the user's
browser to load the vulnerable component before passing malicious input. This
could cause the Display Services functionality to stop or malfunction.
CVE-2020-8477 has been assigned to this vulnerability. A CVSS v3 base score of
8.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:R/S:U/
C:H/I:H/A:H )
3.3 BACKGROUND
CRITICAL INFRASTRUCTURE SECTORS: Chemical, Critical Manufacturing, Dams,
Energy, Food and Agriculture, Water and Wastewater Systems
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Switzerland
3.4 RESEARCHER
William Knowles of Applied Risk reported this vulnerability to ABB.
4. MITIGATIONS
ABB's recommendations:
o This vulnerability was corrected in System 800xA of the following versions:
5.1 Rev E/5.1 FP4 E TC6, ABB recommends users on the 5.1 track to
install this TC, which can be obtained from technical support upon
request.
6.0.3.3 RU1, ABB recommends users on the 6.0.3 LTS track to update
6.0.3.3 and install RU1 for IM.
6.1 RU1, ABB recommends users on the 6.1 track to update to this
version.
o The above-mentioned updates are recommended regardless of whether the
previously described manual removal of the vulnerable component has been
done or not. The IM rollups for 6.0.3.3 and 6.1 can be downloaded from My
ABB/My Control System.
o Please note this vulnerability can be exploited by remote and
unauthenticated users, so users are recommended to ensure only authorized
persons have access to plant assets and network and that web browsing from
system nodes to external networks is restricted, especially from an IM
node.
o Check that the usage of the Access Enable key in AC 800M HI and the
configured access level of SIL variables corresponds to the risk analysis.
Successful exploitation of this vulnerability requires luring a user to a
malicious website. Recommended baseline security practices and firewall
configurations can help protect a network and its attached devices from attacks
that originate from outside the network.
Recommended baseline security practices and firewall configurations can help
protect a network and its attached devices from attacks that originate from
outside the network. For example, common practices are for process control
systems to be physically protected from direct access by unauthorized
personnel, have no direct connections to the Internet, and are separated from
other networks by means of a firewall system that has a minimal number of ports
exposed, and others that must be evaluated case by case.
Process control and automation systems should not be used for general business
functions (e.g., Internet browsing, email, etc.) that are not critical
industrial processes. Portable computers and removable storage media should be
carefully scanned for viruses before they are connected to a control system.
Recommended practices include that process control systems are physically
protected, have no direct connections to the Internet, and are separated from
other networks by means of a firewall system with a minimal number of ports
exposed.
For more information please refer to ABB's Cybersecurity Advisory .
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
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.
For any questions related to this report, please contact the CISA at:
Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870
CISA 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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