CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:S/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
39.4%
Successful exploitation of these vulnerabilities could allow for arbitrary information disclosure, manipulation, and a denial-of-service condition.
The following versions of SiteManager and GateManager are affected:
An authenticated adversary can read service configuration and other sensitive information and abuse this information for malicious activities on SiteManager instances.
CVE-2020-11641 has been assigned to this vulnerability. A CVSS v3 base score of 7.7 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N).
An authenticated adversary can repeatedly trigger a restart of SiteManager instances, thus limiting availability.
CVE-2020-11642 has been assigned to this vulnerability. A CVSS v3 base score of 7.7 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H).
An authenticated adversary can gather information about devices belonging to a foreign organization and abuse this information for malicious activities.
CVE-2020-11643 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).
An authenticated adversary can fool users of foreign domains with fictional audit messages/alerts of their choice.
CVE-2020-11644 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N).
CVE-2020-11645 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
An authenticated adversary can view information about all devices belonging to their domain and abuse this information for malicious activities.
CVE-2020-11646 has been assigned to this vulnerability. A CVSS v3 base score of 4.3 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).
Nikolay Sokolik and Hay Mizrachi of OTORIO reported these vulnerabilities to CISA.
B&R Industrial Automation reports the vulnerabilities have been fixed in the following versions:
The B&R cybersecurity webpage provides further information including cybersecurity guidelines.
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-12-146-01B–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 these vulnerabilities.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-11641
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-11642
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-11643
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-11644
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-11645
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-11645
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-11646
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cwe.mitre.org/data/definitions/200.html
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cwe.mitre.org/data/definitions/287.html
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cwe.mitre.org/data/definitions/400.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
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www.br-automation.com/en/service/cyber-security/
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www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
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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
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mailto:?subject=B%26R%20Automation%20SiteManager%20and%20GateManager&body=www.cisa.gov/news-events/ics-advisories/icsa-20-273-03
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:S/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
39.4%