CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
69.0%
Successful exploitation of this vulnerability could allow an attacker to inject and execute arbitrary code on the information manager server.
The following versions of System 800xA Information Manager are affected:
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 userโs 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)
CRITICAL INFRASTRUCTURE SECTORS: Chemical, Critical Manufacturing, Dams, Energy, Food and Agriculture, Water and Wastewater Systems
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Switzerland
William Knowles of Applied Risk reported this vulnerability to ABB.
ABBโs recommendations:
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 ABBโs Cybersecurity Advisory.
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
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-12-146-01BโTargeted 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.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-8477
cisasurvey.gov1.qualtrics.com/jfe/form/SV_9n4TtB8uttUPaM6?product=https://www.cisa.gov/news-events/ics-advisories/icsa-20-184-02
cwe.mitre.org/data/definitions/79.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
search.abb.com/library/Download.aspx?DocumentID=2PAA121232&LanguageCode=en&DocumentPartId=&Action=Launch
twitter.com/CISAgov
twitter.com/intent/tweet?text=ABB%20System%20800xA%20Information%20Manager+https://www.cisa.gov/news-events/ics-advisories/icsa-20-184-02
www.dhs.gov
www.dhs.gov/foia
www.dhs.gov/performance-financial-reports
www.facebook.com/CISA
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www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
www.instagram.com/cisagov
www.linkedin.com/company/cybersecurity-and-infrastructure-security-agency
www.linkedin.com/sharing/share-offsite/?url=https://www.cisa.gov/news-events/ics-advisories/icsa-20-184-02
www.oig.dhs.gov/
www.us-cert.gov/ics
www.us-cert.gov/ics
www.us-cert.gov/ics/alerts/ICS-ALERT-10-301-01
www.us-cert.gov/ics/recommended-practices
www.us-cert.gov/ics/tips/ICS-TIP-12-146-01B
www.us-cert.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=ABB%20System%20800xA%20Information%20Manager&body=www.cisa.gov/news-events/ics-advisories/icsa-20-184-02
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
69.0%