Siemens LOGO! V8.3 BM Devices

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global). 

View CSAF

1. EXECUTIVE SUMMARY

  • CVSS v4 5.1
  • ATTENTION: Low attack complexity
  • Vendor: Siemens
  • Equipment: LOGO! V8.3 BM Devices
  • Vulnerability: Plaintext Storage of a Password

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker with physical access to an affected device to extract user-set passwords from an embedded storage IC.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following products of Siemens, are affected:

  • Siemens LOGO! 12/24RCE (6ED1052-1MD08-0BA1): All versions
  • Siemens LOGO! 12/24RCEo (6ED1052-2MD08-0BA1): All versions
  • Siemens LOGO! 24CE (6ED1052-1CC08-0BA1): All versions
  • Siemens LOGO! 24CEo (6ED1052-2CC08-0BA1): All versions
  • Siemens LOGO! 24RCE (6ED1052-1HB08-0BA1): All versions
  • Siemens LOGO! 24RCEo (6ED1052-2HB08-0BA1): All versions
  • Siemens LOGO! 230RCE (6ED1052-1FB08-0BA1): All versions
  • Siemens LOGO! 230RCEo (6ED1052-2FB08-0BA1): All versions
  • Siemens SIPLUS LOGO! 12/24RCE (6AG1052-1MD08-7BA1): All versions
  • Siemens SIPLUS LOGO! 12/24RCEo (6AG1052-2MD08-7BA1): All versions
  • Siemens SIPLUS LOGO! 24CE (6AG1052-1CC08-7BA1): All versions
  • Siemens SIPLUS LOGO! 24CEo (6AG1052-2CC08-7BA1): All versions
  • Siemens SIPLUS LOGO! 24RCE (6AG1052-1HB08-7BA1): All versions
  • Siemens SIPLUS LOGO! 24RCEo (6AG1052-2HB08-7BA1): All versions
  • Siemens SIPLUS LOGO! 230RCE (6AG1052-1FB08-7BA1): All versions
  • Siemens SIPLUS LOGO! 230RCEo (6AG1052-2FB08-7BA1): All versions

3.2 Vulnerability Overview

3.2.1 PLAINTEXT STORAGE OF A PASSWORD CWE-256

Affected devices store user passwords in plaintext without proper protection. This could allow a physical attacker to retrieve them from the embedded storage ICs.

CVE-2024-39922 has been assigned to this vulnerability. A CVSS v3 base score of 4.6 has been assigned; the CVSS vector string is (CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

A CVSS v4 score has also been calculated for CVE-2024-39922. A base score of 5.1 has been calculated; the CVSS vector string is (CVSS4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Siemens reported this vulnerability to CISA.

4. MITIGATIONS

Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • Currently no fix is planned
  • Ensure the physical security of the affected devices to prevent unauthorized access (also see the operational guidelines for Industrial Security, especially: “Plant security: Physical prevention of access to critical components”)

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage

For more information see the associated Siemens security advisory SSA-921449 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

  • Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
  • Locate control system networks and remote devices behind firewalls and isolating them from business networks.
  • When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are 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 cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely.

5. UPDATE HISTORY

  • August 15, 2024: Initial Publication

Siemens INTRALOG WMS

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global). 

View CSAF

1. EXECUTIVE SUMMARY

  • CVSS v4 8.8
  • ATTENTION: Exploitable from adjacent network/low attack complexity
  • Vendor: Siemens
  • Equipment: INTRALOG WMS
  • Vulnerabilities: Cleartext Transmission of Sensitive Information, Heap-based Buffer Overflow

2. RISK EVALUATION

Successful exploitation could allow an unauthenticated attacker located in the INTRALOG WMS network to decrypt and modify client-server communication, or potentially execute arbitrary code on the application servers.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following version of Siemens INTRALOG WMS, are affected:

  • Siemens INTRALOG WMS: Versions prior to V4

3.2 Vulnerability Overview

3.2.1 CLEARTEXT TRANSMISSION OF SENSITIVE INFORMATION CWE-319

Microsoft.Data.SqlClient and System.Data.SqlClient SQL Data Provider Security Feature Bypass Vulnerability

CVE-2024-0056 has been assigned to this vulnerability. A CVSS v3 base score of 8.0 has been assigned; the CVSS vector string is (CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N).

A CVSS v4 score has also been calculated for CVE-2024-0056. A base score of 8.8 has been calculated; the CVSS vector string is (CVSS4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N).

3.2.2 HEAP-BASED BUFFER OVERFLOW CWE-122

.NET and Visual Studio Remote Code Execution Vulnerability

CVE-2024-30045 has been assigned to this vulnerability. A CVSS v3 base score of 5.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L).

A CVSS v4 score has also been calculated for CVE-2024-30045. A base score of 4.8 has been calculated; the CVSS vector string is (CVSS4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Chemical, Energy, Food and Agriculture, Healthcare and Public Health, Transportation Systems, and Water and Wastewater Systems
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Siemens reported these vulnerabilities to CISA.

4. MITIGATIONS

Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:

  • INTRALOG WMS: Update to V4 or later version

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage

For more information see the associated Siemens security advisory SSA-417547 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:

  • Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
  • Locate control system networks and remote devices behind firewalls and isolating them from business networks.
  • When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are 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 cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

CISA also recommends users take the following measures to protect themselves from social engineering attacks:

No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time. These vulnerabilities are not exploitable remotely.

5. UPDATE HISTORY

  • August 15, 2024: Initial Publication

Dorsett Controls InfoScan

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1. EXECUTIVE SUMMARY

  • CVSS v4 6.9
  • ATTENTION: Exploitable remotely/low attack complexity
  • Vendor: Dorsett Controls
  • Equipment: InfoScan
  • Vulnerabilities: Exposure of Sensitive Information To An Unauthorized Actor, Path Traversal

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to expose sensitive information, resulting in data theft and misuse of credentials.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Dorsett Controls products are affected:

  • InfoScan: v1.32, v1.33, and v1.35

3.2 Vulnerability Overview

3.2.1 EXPOSURE OF SENSITIVE INFORMATION TO AN UNAUTHORIZED ACTOR CWE-200

Dorsett Controls InfoScan is vulnerable due to a leak of possible sensitive information through the response headers and the rendered JavaScript prior to user login.

CVE-2024-42493 has been assigned to this vulnerability. A CVSS v3.1 base score of 5.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

A CVSS v4 score has also been calculated for CVE-2024-42493. A base score of 6.9 has been calculated; the CVSS vector string is (CVSS4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N).

3.2.2 IMPROPER LIMITATION OF A PATHNAME TO A RESTRICTED DIRECTORY (‘PATH TRAVERSAL’) CWE-22

The InfoScan client download page can be intercepted with a proxy, to expose filenames located on the system, which could lead to additional information exposure.

CVE-2024-42408 has been assigned to this vulnerability. A CVSS v3.1 base score of 5.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

A CVSS v4 score has also been calculated for CVE-2024-42408. A base score of 6.9 has been calculated; the CVSS vector string is (CVSS4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N).

3.2.3 EXPOSURE OF SENSITIVE INFORMATION TO AN UNAUTHORIZED ACTOR CWE-200

Dorsett Controls Central Server update server has potential information leaks with an unprotected file that contains passwords and API keys.

CVE-2024-39287 has been assigned to this vulnerability. A CVSS v3.1 base score of 5.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

A CVSS v4 score has also been calculated for CVE-2024-39287. A base score of 6.9 has been calculated; the CVSS vector string is (CVSS4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Water and Wastewater Systems
  • COUNTRIES/AREAS DEPLOYED: United States
  • COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

An anonymous researcher reported these vulnerabilities to CISA.

4. MITIGATIONS

Dorsett Controls recommends users update their InfoScan system v1.38 or later.

To install the new release, user administrators will need to:

  • login to InfoScan and select “System Prefs” from the menu.
  • Once the System Prefs application is open, select Maintenance.
  • Click the Install Now button in the Ready To Install section.
  • If no internet access available, the update will need to be downloaded from the Dorsett Controls Customer Portal by selecting the InfoScan Update tile. Download the update and following the instructions listed on the portal.

For more information, please refer to the Dorsett Controls security bulletin for more information.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:

  • Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
  • Locate control system networks and remote devices behind firewalls and isolating them from business networks.
  • When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize 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 cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.

5. UPDATE HISTORY

  • August 8, 2024: Initial Publication

Delta Electronics DIAScreen

View CSAF

1. EXECUTIVE SUMMARY

  • CVSS v4 8.5
  • ATTENTION: Low attack complexity
  • Vendor: Delta Electronics
  • Equipment: DIAScreen
  • Vulnerability: Stack-based Buffer Overflow

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to cause a stack-based buffer overflow, resulting in execution of arbitrary code.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Delta Electronics DIAScreen visualization software are affected:

  • DIAScreen: Versions prior to 1.4.2

3.2 Vulnerability Overview

3.2.1 STACK-BASED BUFFER OVERFLOW CWE-121

A crafted DPA file could force Delta Electronics DIAScreen to overflow a stack-based buffer, which could allow an attacker to execute arbitrary code.

CVE-2024-7502 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2024-7502. A base score of 8.5 has been calculated; the CVSS vector string is (CVSS4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Energy
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: Taiwan

3.4 RESEARCHER

Natnael Samson (@NattiSamson) working with Trend Micro Zero Day Initiative reported this vulnerability to CISA.

4. MITIGATIONS

Delta Electronics has released v1.4.2 of DIAScreen and recommends users install this update on all affected systems.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

  • Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
  • Locate control system networks and remote devices behind firewalls and isolating them from business networks.
  • When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize 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 cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely.

5. UPDATE HISTORY

  • August 6, 2024: Initial Publication

CISA Releases Secure by Demand Guidance

Today, CISA and the Federal Bureau of Investigation (FBI) have released Secure by Demand Guide: How Software Customers Can Drive a Secure Technology Ecosystem to help organizations drive a secure technology ecosystem by ensuring their software manufacturers prioritize secure technology from the start.

An organization’s acquisition staff often has a general understanding of the core cybersecurity requirements for a particular technology acquisition. However, they frequently don’t assess whether a given supplier has practices and policies in place to ensure that security is a core consideration from the earliest stages of the product development lifecycle.

This guide provides organizations with questions to ask when buying software, considerations to integrate product security into various stages of the procurement lifecycle, and resources to assess product security maturity in line with secure by design principles. 

This guide compliments the “Software Acquisition Guide for Government Enterprise Consumers: Software Assurance in the Cyber-Supply Chain Risk Management (C-SCRM) Lifecycle” that was recently published.

CISA encourages organizations to review both the Secure by Demand Guide and Software Acquisition Guide and implement recommended actions.

Johnson Controls exacqVision Client and exacqVision Server

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1. EXECUTIVE SUMMARY

  • CVSS v4 9.0
  • ATTENTION: Exploitable remotely
  • Vendor: Johnson Controls Inc.
  • Equipment: exacqVision Client, exacqVision Server key
  • Vulnerability: Inadequate Encryption Strength

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to be able to decrypt communications between exacqVision Server and exacqVision Client due to insufficient key length and exchange.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Johnson Controls reports that the following versions of exacqVision client and exacqVision server are affected:

  • exacqVision client: All versions
  • exacqVision server: All versions

3.2 Vulnerability Overview

3.2.1 Inadequate Encryption Strength CWE-326

Under certain circumstances the communications between exacqVision Server and exacqVision Client will use insufficient key length and exchange

CVE-2024-32758 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.3 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2024-32758. A base score of 9.0 has been calculated; the CVSS vector string is (CVSS4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: : Critical Manufacturing, Commercial Facilities, Government Facilities, Transportation Systems, Energy
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: Ireland

3.4 RESEARCHER

Reid Wightman of Dragos reported this vulnerability to Johnson Controls, Inc.

4. MITIGATIONS

Johnson Controls recommends user to update exacqVision Client and exacqVision Server to version 24.06

Follow the guidance provided in the exacqVision Hardening Guide under the Password Strengthening section.

For more detailed mitigation instructions, please see Johnson Controls Product Security Advisory JCI-PSA-2024-14

Aligning with CISA recommendations, Johnson Controls recommends taking steps to minimize risks to all building automation systems.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

  • Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
  • Locate control system networks and remote devices behind firewalls and isolating them from business networks.
  • When remote access is required, use more secure methods, such as virtual private networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize 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 cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

CISA also recommends users take the following measures to protect themselves from social engineering attacks:

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability has a high attack complexity.

5. UPDATE HISTORY

  • August 1, 2024: Initial Publication

Rockwell Automation Logix Controllers

View CSAF

1. EXECUTIVE SUMMARY

  • CVSS v4 7.3
  • ATTENTION: Exploitable remotely/low attack complexity
  • Vendor: Rockwell Automation
  • Equipment: ControlLogix, GuardLogix, and 1756 ControlLogix I/O Modules
  • Vulnerability: Unprotected Alternate Channel

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to execute CIP programming and configuration commands.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of ControlLogix, GuardLogix, and 1756 ControlLogix I/O Modules are affected:

  • ControlLogix: Version V28
  • GuardLogix: Version V31
  • 1756-EN4TR: Version V2
  • 1756-EN2T, Series A/B/C (unsigned version): Version v5.007
  • 1756-EN2F, Series A/B (unsigned version): Version v5.007
  • 1756-EN2TR, Series A/B (unsigned version): Version v5.007
  • 1756-EN3TR, Series B (unsigned version): Version v5.007
  • 1756-EN2T, Series A/B/C (signed version): Version v5.027
  • 1756-EN2F, Series A/B (signed version): Version v5.027
  • 1756-EN2TR, Series A/B (signed version): Version v5.027
  • 1756-EN3TR, Series B (signed version): Version v5.027
  • 1756-EN2T, Series D: Version V10.006
  • 1756-EN2F, Series C: Version V10.009
  • 1756-EN2TR, Series C: Version V10.007
  • 1756-EN3TR, Series B: Version V10.007
  • 1756-EN2TP, Series A: Version V10.020

3.2 Vulnerability Overview

3.2.1 Unprotected Alternate Channel CWE-420

A vulnerability exists in the affected products that allows a threat actor to bypass the Trusted Slot feature in a ControlLogix controller. If exploited on any affected module in a 1756 chassis, a threat actor could potentially execute CIP commands that modify user projects and/or device configuration on a Logix controller in the chassis.

CVE-2024-6242 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.4 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2024-6242. A base score of 7.3 has been calculated; the CVSS vector string is (CVSS4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

Sharon Brizinov of Claroty Research – Team82 reported this vulnerability to Rockwell Automation.

4. MITIGATIONS

Rockwell Automation recommends users update the Logix controllers to the following:

The products 1756-EN2T Series A/B/C, 1756-EN2F Series A/B, 1756-EN2TR Series A/B, and 1756-EN3TR Series B do not have a fix available. Users can upgrade to Series D to remediate this vulnerability.

Users that are using the affected firmware and who are not able to upgrade to one of the corrected versions are encouraged to apply the following mitigation and security best practices, where possible:

  • Limit the allowed CIP commands on controllers by setting the mode switch to the RUN position.
  • Security Best Practices

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

  • Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
  • Locate control system networks and remote devices behind firewalls and isolating them from business networks.
  • When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize 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 cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

CISA also recommends users take the following measures to protect themselves from social engineering attacks:

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.

5. UPDATE HISTORY

  • August 01, 2024: Initial Publication