5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.6 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
57.1%
Successful exploitation of these vulnerabilities may result in denial-of-service conditions.
Rockwell Automation reports these vulnerabilities affect the following products:
Unhandled exception vulnerabilities exist within a .dll in FactoryTalk Linx. These vulnerabilities could allow a remote, unauthenticated attacker to send a malicious packet resulting in the termination of RSLinxNG.exe, causing a denial-of-service condition.
CVE-2020-5801 and CVE-2020-5802 have been assigned to these vulnerabilities. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
A buffer overflow vulnerability exists within a .dll in FactoryTalk Linx. This vulnerability could allow a local, unauthenticated attacker to send a malicious packet resulting in the termination of RSLinxNG.exe, causing a denial-of-service condition.
CVE-2020-5806 has been assigned to this vulnerability. A CVSS v3 base score of 6.2 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
A buffer overflow vulnerability exists within a .dll in FactoryTalk Services Platform. This vulnerability could be exploited via a phishing attack where an attacker sends a specially crafted log file to a local user. When the malicious log file is opened by a local user, it can cause a buffer overflow in the FactoryTalk Services Platform resulting in temporary denial-of-service conditions. Users can recover from the condition by reopening the impacted software.
CVE-2020-5806 has been assigned to this vulnerability. A CVSS v3 base score of 4.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L).
Tenable reported these vulnerabilities to Rockwell Automation.
Rockwell Automation published PN1540 to inform users of the risk of these vulnerabilities and instruct users on the proper use of patches.
Rockwell Automation recommends the following network-based vulnerability mitigations for embedded products:
Rockwell Automation recommends the following software/PC-based mitigation strategies:
Rockwell Automation recommends the following social engineering mitigation strategies:
Rockwell Automation recommends the following general mitigations:
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities.
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.cisa.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.cisa.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-2020-5801
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-5802
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-5806
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-5806
cwe.mitre.org/data/definitions/120.html
cwe.mitre.org/data/definitions/120.html
cwe.mitre.org/data/definitions/703.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
rockwellautomation.custhelp.com/app/answers/answer_view/a_id/0
rockwellautomation.custhelp.com/app/answers/answer_view/a_id/0
rockwellautomation.custhelp.com/app/answers/answer_view/a_id/0494865
rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1129496/redirect
twitter.com/CISAgov
twitter.com/intent/tweet?text=Rockwell%20Automation%20FactoryTalk%20Linx%20and%20FactoryTalk%20Services%20Platform+https://www.cisa.gov/news-events/ics-advisories/icsa-21-028-01
us-cert.cisa.gov/ics
us-cert.cisa.gov/ics
us-cert.cisa.gov/ics/recommended-practices
us-cert.cisa.gov/ics/tips/ICS-TIP-12-146-01B
us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.dhs.gov
www.dhs.gov/foia
www.dhs.gov/performance-financial-reports
www.facebook.com/CISA
www.facebook.com/sharer/sharer.php?u=https://www.cisa.gov/news-events/ics-advisories/icsa-21-028-01&title=Rockwell%20Automation%20FactoryTalk%20Linx%20and%20FactoryTalk%20Services%20Platform
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
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-21-028-01
www.oig.dhs.gov/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-21-028-01
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=Rockwell%20Automation%20FactoryTalk%20Linx%20and%20FactoryTalk%20Services%20Platform&body=www.cisa.gov/news-events/ics-advisories/icsa-21-028-01
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.6 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
57.1%