Juniper Networks released a security bulletin to address multiple vulnerabilities affecting Juniper Secure Analytics optional applications. A cyber threat actor could exploit one of these vulnerabilities to take control of an affected system.

CISA encourages users and administrators to review the Juniper Security Bulletin JSA76718 and apply the necessary updates.

CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation.

• CVE-2024-21893 Ivanti Connect Secure, Policy Secure, and Neurons Server-Side Request Forgery (SSRF) Vulnerability

These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise.

Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the Known Exploited Vulnerabilities Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information.

Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.

View CSAF

1. EXECUTIVE SUMMARY

• CVSS v3 9.8
• ATTENTION: Exploitable remotely
• Vendor: Emerson
• Equipment: Rosemount GC370XA, GC700XA, GC1500XA
• Vulnerabilities: Command Injection, Improper Authentication, Improper Authorization

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an unauthenticated attacker with network access to run arbitrary commands, access sensitive information, cause a denial-of-service condition, and bypass authentication to acquire admin capabilities.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Emerson Rosemount Gas Chromatographs are affected:

• GC370XA: Version 4.1.5
• GC700XA: Version 4.1.5
• GC1500XA: Version 4.1.5

3.2 Vulnerability Overview

3.2.1 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN A COMMAND (‘COMMAND INJECTION’) CWE-77

In Emerson Rosemount GC370XA, GC700XA, and GC1500XA products, an unauthenticated user with network access could execute arbitrary commands in root context from a remote computer.

CVE-2023-46687 has been assigned to this vulnerability. A CVSS v3.1 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.2.2 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN A COMMAND (‘COMMAND INJECTION’) CWE-77

In Emerson Rosemount GC370XA, GC700XA, and GC1500XA products, an authenticated user with network access could run arbitrary commands from a remote computer.

CVE-2023-49716 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.9 has been calculated; the CVSS vector string is (AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:H).

3.2.3 IMPROPER AUTHENTICATION CWE-287

In Emerson Rosemount GC370XA, GC700XA, and GC1500XA products, an unauthenticated user with network access could bypass authentication and acquire admin capabilities.

CVE-2023-51761 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.3 has been calculated; the CVSS vector string is (AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H).

3.2.4 IMPROPER AUTHORIZATION CWE-285

In Emerson Rosemount GC370XA, GC700XA, and GC1500XA products, an unauthenticated user with network access could obtain access to sensitive information or cause a denial-of-service condition.

CVE-2023-43609 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.9 has been calculated; the CVSS vector string is (AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:H).

3.3 BACKGROUND

• CRITICAL INFRASTRUCTURE SECTORS: Energy, Chemical
• COUNTRIES/AREAS DEPLOYED: Worldwide
• COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

Vera Mens of Claroty Research reported these vulnerabilities to Emerson.

4. MITIGATIONS

Emerson recommends end users update the affected products’ firmware. For update information, contact Emerson Tech Support. Emerson recommends end users continue to use current cybersecurity industry best practices, and in the event such infrastructure is not implemented within an end user’s network, the user should take action to ensure the affected product is connected to a well-protected network and not connected to the Internet. For more information, refer to the Emerson Security web page.

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. These vulnerabilities have a high attack complexity.

5. UPDATE HISTORY

• January 30, 2024: Initial Publication

CISA is releasing this alert to provide cyber defenders with new mitigations to defend against threat actors exploiting Ivanti Connect Secure and Policy Secure Gateways vulnerabilities in Ivanti devices (CVE-2023-46805 and CVE-2024-21887).  

Threat actors are continuing to leverage vulnerabilities in Ivanti Connect Secure and Policy Secure Gateways to capture credentials and/or drop webshells that enable further compromise of enterprise networks. Some threat actors have recently developed workarounds to current mitigations and detection methods and have been able to exploit weaknesses, move laterally, and escalate privileges without detection. CISA is aware of instances in which sophisticated threat actors have subverted the external integrity checker tool (ICT), further minimizing traces of their intrusion.  

If an organization has been running Ivanti Connect Secure (9.x and 22.x) and Policy Secure gateways over the last several weeks and/or continues to run these products, CISA recommends continuous threat hunting on any systems connected to—or recently connected to—the Ivanti device. Additionally, organizations should monitor authentication, account usage, and identity management services that could be exposed and isolate the system(s) from any enterprise resources as much as possible.  

After applying patches, when these become available, CISA recommends that organizations continue to hunt their network in order to detect any compromise that may have occurred before patches were implemented.  

This guidance supplements CISA’s previous guidance for mitigation and detection, which remains applicable. For previous guidance, see CISA Issues Emergency Directive on Ivanti Vulnerabilities and Ivanti Releases Security Update for Connect Secure and Policy Secure Gateways. 

CISA released eight Industrial Control Systems (ICS) advisories on January 30, 2024. These advisories provide timely information about current security issues, vulnerabilities, and exploits surrounding ICS.

• ICSA-24-030-01 Emerson Rosemount GC370XA, GC700XA, GC1500XA
• ICSA-24-030-02 Mitsubishi Electric FA Engineering Software Products
• ICSA-24-030-03 Mitsubishi Electric MELSEC WS Series Ethernet Interface Module
• ICSA-24-030-04 Hitron Systems Security Camera DVR
• ICSA-24-030-05 Rockwell Automation ControlLogix and GuardLogix 
• ICSA-24-030-06 Rockwell Automation FactoryTalk Service Platform
• ICSA-24-030-07 Rockwell Automation LP30/40/50 and BM40 Operator Interface
• ICSA-23-208-03 Mitsubishi Electric CNC Series (Update E)

 

CISA encourages users and administrators to review the newly released ICS advisories for technical details and mitigations.

View CSAF

1. EXECUTIVE SUMMARY

• CVSS v3 8.6
• ATTENTION: Exploitable remotely/low attack complexity
• Vendor: Rockwell Automation
• Equipment: ControlLogix, GuardLogix
• Vulnerability: Improper Restriction of Operations within the Bounds of a Memory Buffer

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to crash the device by exploiting a Denial-of-Service (DoS) vulnerability.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Rockwell Automation ControlLogix and GuardLogix programmable logic controllers are affected:

• ControlLogix 5570: Firmware version 20.011
• ControlLogix 5570 redundant: Firmware versions 20.054_kit1
• GuardLogix 5570: Firmware version 20.011

3.2 Vulnerability Overview

3.2.1 IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFER CWE-119

A Denial-of-Service (DoS) vulnerability exists that, if exploited, the product could potentially experience a major nonrecoverable fault (MNRF). The device will restart itself to recover from the MNRF.

CVE-2024 21916 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.6 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H).

3.3 BACKGROUND

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

3.4 RESEARCHER

Rockwell Automation reported this vulnerability to CISA.

4. MITIGATIONS

Rockwell Automation users with the affected software are encouraged to apply the risk mitigations, if possible. Additionally, Rockwell Automation encourages users to implement their suggested security best practices to minimize the risk of vulnerability.

• ControlLogix 5570: Corrected in v33.016, 34.013, 35.012, 36.011 and later
• ControlLogix 5570 redundant: Corrected in v33.053_kit1, 34.052_kit1, 35.052_kit1, 36.051_kit1 and later
• GuardLogix 5570: Corrected in v33.016, 34.013, 35.012, 36.011 and later

For more information, see Rockwell Automation’s security advisory.

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.

5. UPDATE HISTORY

• January 30, 2024: Initial Publication

View CSAF

1. EXECUTIVE SUMMARY

• CVSS v3 9.8
• ATTENTION: Exploitable remotely/low attack complexity
• Vendor: Mitsubishi Electric
• Equipment: EZSocket, FR Configurator2, GT Designer3 Version1(GOT1000), GT Designer3 Version1(GOT2000), GX Works2, GX Works3, MELSOFT Navigator, MT Works2, MX Component, MX OPC Server DA/UA (Software packaged with MC Works64)
• Vulnerabilities: Missing Authentication for Critical Function, Unsafe Reflection

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to disclose, tamper with, destroy or delete information in the products, or cause a denial-of-service (DoS) condition on the products.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Mitsubishi Electric FA Engineering Software Products, are affected:

• EZSocket: Versions 3.0 and later
• FR Configurator2: All versions
• GT Designer3 Version1(GOT1000): All versions
• GT Designer3 Version1(GOT2000): All versions
• GX Works2: Versions 1.11M and later
• GX Works3: All versions
• MELSOFT Navigator: Versions 1.04E and later
• MT Works2: All versions
• MX Component: Versions 4.00A and later
• MX OPC Server DA/UA (Software packaged with MC Works64): All versions

3.2 Vulnerability Overview

3.2.1 MISSING AUTHENTICATION FOR CRITICAL FUNCTION CWE-306

A remote unauthenticated attacker may be able to bypass authentication by sending specially crafted packets and connect to the products.

CVE-2023-6942 has been assigned to this vulnerability. A CVSS v3.1 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:H/A:N).

3.2.2 USE OF EXTERNALLY-CONTROLLED INPUT TO SELECT CLASSES OR CODE (‘UNSAFE REFLECTION’) CWE-470

An attacker may be able to execute a malicious code by remotely calling a function with a path to a malicious library while connected to the products. As a result, unauthorized users may disclose, tamper with, destroy or delete information in the products, or cause a denial-of-service (DoS) condition on the products.

CVE-2023-6943 has been assigned to this vulnerability. A CVSS v3.1 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.3 BACKGROUND

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

3.4 RESEARCHER

Reid Wightman of Dragos reported these vulnerabilities to Mitsubishi Electric.

4. MITIGATIONS

Mitsubishi Electric recommends users take the following mitigation measures to minimize the risk of exploiting these vulnerabilities:

• When connecting your personal computer with the affected products to the internet, use a firewall, virtual private network (VPN), etc., to prevent unauthorized access and allow only trusted users to remote login.
• Use your personal computer with the affected products within a LAN and block access from untrusted networks and hosts.
• Restrict physical access to your computer using the affected products as well as to the personal computers and network devices that can communicate with it.
• Install antivirus software on your personal computer using the affected products and on the personal computers that can communicate with it.
• Don’t open untrusted files or click untrusted links.

For more information, see Mitsubishi Electric’s security advisory.

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

• January 30, 2024: Initial Publication