9.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
9.1 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
48.3%
This updated advisory is a follow-up to the original advisory titled ICSA-22.167-02 AutomationDirect DirectLOGIC with Serial Communication that was published June 16, 2022, on the ICS webpage on cisa.gov/ICS.
Successful exploitation of this vulnerability could cause a loss of sensitive information and unauthorized changes.
The following versions of DirectLOGIC with serial communication, a programmable controller, are affected:
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The product is vulnerable to a specifically crafted serial message to the CPU serial port that will cause the PLC to respond with the PLC password in cleartext. This could allow an attacker to access and make unauthorized changes.
CVE-2022-2003 has been assigned to this vulnerability. A CVSS v3 base score of 7.7 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).
Sam Hanson of Dragos reported this vulnerability to CISA.
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AutomationDirect recommends the following mitigations for the affected products:
All DirectLogic PLC firmware can be found on the Product Firmware page. The updated firmware will no longer respond with the password when requested with the specially crafted message.
Additional brute force mitigation for password access has also been added. Three incorrect password entries will result in a 3 hour lock out of password entry. Power cycling will allow subsequent password attempts.
--------- End Update A part 2 of 2 ---------
While automation networks and systems have built-in password protection schemes, this is only one step in securing the affected systems. Automation control system networks must incorporate data protection and security measures at least as robust as a typical business computer system. AutomationDirect recommends users of PLCs, HMI products, and other SCADA system products perform independent network security analysis to determine the proper level of security required for the application.
AutomationDirect has identified the specific mitigation actions listed below:
Users should refer to the following link for supporting information related to security considerations.
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 cisa.gov/ics 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 cisa.gov/ics 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. This vulnerability is not exploitable remotely.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-2003
cisa.gov/ics
cisa.gov/ics
cwe.mitre.org/data/definitions/319.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
support.automationdirect.com/docs/securityconsiderations.pdf
twitter.com/CISAgov
twitter.com/intent/tweet?text=AutomationDirect%20DirectLOGIC%20with%20Serial%20Communication%20%28Update%20A%29+https://www.cisa.gov/news-events/ics-advisories/icsa-22-167-02
www.automationdirect.com/support/software-downloads?itemcode=DirectSOFT%206
www.automationdirect.com/support/software-downloads?itemcode=DirectSOFT%206
www.automationdirect.com/support/software-downloads?itemcode=DirectSOFT%206
www.automationdirect.com/support/software-downloads?itemcode=DirectSOFT%206
www.automationdirect.com/support/software-downloads?itemcode=DirectSOFT%206
www.automationdirect.com/support/software-downloads?itemcode=DirectSOFT%206
www.cisa.gov/uscert/ics/recommended-practices
www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
www.cisa.gov/uscert/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
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www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
www.instagram.com/cisagov
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www.linkedin.com/sharing/share-offsite/?url=https://www.cisa.gov/news-events/ics-advisories/icsa-22-167-02
www.oig.dhs.gov/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-22-167-02
www.usa.gov/
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mailto:?subject=AutomationDirect%20DirectLOGIC%20with%20Serial%20Communication%20%28Update%20A%29&body=www.cisa.gov/news-events/ics-advisories/icsa-22-167-02
9.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
9.1 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
48.3%