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.

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

View CSAF

1. EXECUTIVE SUMMARY

• CVSS v3 8.8
• ATTENTION: Exploitable remotely/low attack complexity
• Vendor: Rockwell Automation
• Equipment: LP30, LP40, LP50, and BM40 Operator Panels
• Vulnerability: Improper Validation of Consistency within Input, Out-of-bounds Write, Stack-based Buffer Overflow, Untrusted Pointer Dereference

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an authenticated attacker to use specifically crafted communication requests to perform a denial-of-service condition, memory overwriting, or remote code execution.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Rockwell Automation products are affected:

• LP30 Operator Panel: Versions prior to V3.5.19.0
• LP40 Operator Pane: Versions prior to V3.5.19.0
• LP50 Operator Panel: Versions prior to V3.5.19.0
• BM40 Operator Panel: Versions prior to V3.5.19.0

3.2 Vulnerability Overview

3.2.1 IMPROPER VALIDATION OF CONSISTENCY WITHIN INPUT CWE-1288

After successful authentication, specifically crafted communication requests with inconsistent content can cause the CmpFiletransfer component to read internally from an invalid address, potentially leading to a denial-of-service condition.

CVE-2022-47378 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

3.2.2 OUT-OF-BOUNDS WRITE CWE-787

After successful authentication, specifically crafted communication requests can cause the CmpApp component to write threat actor-controlled data to memory, which can lead to a denial-of-service condition, memory overwriting, or remote code execution.

CVE-2022-47379 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H ).

3.2.3 STACK-BASED BUFFER OVERFLOW CWE-121

After successful authentication, specifically crafted communication requests can cause the CmpApp component to write threat actor-controlled data to stack, which can lead to a denial-of-service condition, memory overwriting, or remote code execution.

CVE-2022-47380 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.4 STACK-BASED BUFFER OVERFLOW CWE-121

After successful authentication, specifically crafted communication requests can cause the CmpApp component to write threat actor-controlled data to stack, which can lead to a denial-of-service condition, memory overwriting, or remote code execution.

CVE-2022-47381 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.5 STACK-BASED BUFFER OVERFLOW CWE-121

After successful authentication, specifically crafted communication requests can cause the CmpTraceMgr component to write threat actor-controlled data to stack, which can lead to a denial-of-service condition, memory overwriting, or remote code execution.

CVE-2022-47382 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.6 STACK-BASED BUFFER OVERFLOW CWE-121

After successful authentication, specifically crafted communication requests can cause the CmpTraceMgr component to write threat actor-controlled data to stack, which can lead to a denial-of-service condition, memory overwriting, or remote code execution.

CVE-2022-47383 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.7 STACK-BASED BUFFER OVERFLOW CWE-121

After successful authentication, specifically crafted communication requests can cause the CmpTraceMgr component to write threat actor-controlled data to stack, which can lead to a denial-of-service condition, memory overwriting, or remote code execution.

CVE-2022-47384 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.8 STACK-BASED BUFFER OVERFLOW CWE-121

After successful authentication, specifically crafted communication requests can cause the CmpTraceMgr component to write threat actor-controlled data to stack, which can lead to a denial-of-service condition, memory overwriting, or remote code execution.

CVE-2022-47386 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.9 STACK-BASED BUFFER OVERFLOW CWE-121

After successful authentication, specifically crafted communication requests can cause the CmpTraceMgr component to write threat actor-controlled data to stack, which can lead to a denial-of-service condition, memory overwriting, or remote code execution.

CVE-2022-47387 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.10 STACK-BASED BUFFER OVERFLOW CWE-121

After successful authentication, specifically crafted communication requests can cause the CmpTraceMgr component to write threat actor-controlled data to stack, which can lead to a denial-of-service condition, memory overwriting, or remote code execution.

CVE-2022-47388 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.11 STACK-BASED BUFFER OVERFLOW CWE-121

After successful authentication, specifically crafted communication requests can cause the CmpTraceMgr component to write threat actor-controlled data to stack, which can lead to a denial-of-service condition, memory overwriting, or remote code execution.

CVE-2022-47389 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.12 STACK-BASED BUFFER OVERFLOW CWE-121

After successful authentication, specifically crafted communication requests can cause the CmpTraceMgr component to write threat actor-controlled data to stack, which can lead to a denial-of-service condition, memory overwriting, or remote code execution.

CVE-2022-47390 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.13 STACK-BASED BUFFER OVERFLOW CWE-121

After successful authentication, specifically crafted communication requests can cause the CmpAppForce component to write threat actor-controlled data to stack, which can lead to a denial-of-service condition, memory overwriting, or remote code execution.

CVE-2022-47385 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.14 IMPROPER VALIDATION OF CONSISTENCY WITHIN INPUT CWE-1288

After successful authentication, specifically crafted communication requests with inconsistent content can cause the CmpApp/CmpAppBP/CmpAppForce components to read internally from an invalid address, potentially leading to a denial-of-service condition.

CVE-2022-47392 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

3.2.15 UNTRUSTED POINTER DEREFERENCE CWE-822

After successful authentication, specifically crafted communication requests can cause the cmpFiletransfer component to dereference addresses provided by the request for internal read access, which can lead to a denial-of-service situation.

CVE-2022-47393 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/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 these vulnerabilities to CISA.

4. MITIGATIONS

Rockwell Automation recommend users using the affected software to apply the risk mitigations, if possible:

• Upgrade to CODESYS version 3.5.19.2 which has been released to mitigate these issues.
• Additionally, we encourage the user to implement our suggested security best practices to minimize risk of the vulnerability.

Users can use Stakeholder-Specific Vulnerability Categorization to generate more environment-specific prioritization.

Additional information can be found in the CODESYS Advisory.

CISA recommends users take defensive measures to minimize the risk of exploitation of this 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 this these vulnerabilities has been reported to CISA at this time.

5. UPDATE HISTORY

• January 30, 2024: Initial Publication

View CSAF

1. EXECUTIVE SUMMARY

• CVSS v3 8.1
• ATTENTION: Exploitable remotely/low attack complexity/public exploits are available/known public exploitation
• Vendor: Hitron Systems
• Equipment: DVR
• Vulnerability: Improper Input Validation

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to affect the availability of the product through exploitation of an improper input validation vulnerability and default credentials.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Hitron Systems DVR, a digital video recorder, are affected:

• DVR HVR-4781: Versions 1.03 through 4.02
• DVR HVR-8781: Versions 1.03 through 4.02
• DVR HVR-16781: Versions 1.03 through 4.02
• DVR LGUVR-4H: Versions 1.02 through 4.02
• DVR LGUVR-8H: Versions 1.02 through 4.02
• DVR LGUVR-16H: Versions 1.02 through 4.02

3.2 Vulnerability Overview

3.2.1 IMPROPER INPUT VALIDATION CWE-20

An improper input validation vulnerability exists in Hitron Systems DVR HVR-4781 versions 1.03 through 4.02 that could allow an attacker to cause a denial-of-service condition when using default admin name and password.

CVE-2024-22768 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.4 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H).

3.2.2 IMPROPER INPUT VALIDATION CWE-20

An improper input validation vulnerability exists in Hitron Systems DVR HVR-8781 versions 1.03 through 4.02 that could allow an attacker to cause a denial-of-service condition when using default admin name and password.

CVE-2024-22769 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.4 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H).

3.2.3 IMPROPER INPUT VALIDATION CWE-20

An improper input validation vulnerability exists in Hitron Systems DVR HVR-16781 versions 1.03 through 4.02 that could allow an attacker to cause a denial-of-service condition when using default admin name and password.

CVE-2024-22770 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.4 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H).

3.2.4 IMPROPER INPUT VALIDATION CWE-20

An improper input validation vulnerability exists in Hitron Systems DVR LGUVR-4H versions 1.02 through 4.02 that could allow an attacker to cause a denial-of-service condition when using default admin name and password.

CVE-2024-22771 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.4 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H).

3.2.5 IMPROPER INPUT VALIDATION CWE-20

An improper input validation vulnerability exists in Hitron Systems DVR LGUVR-8H versions 1.02 through 4.02 that could allow an attacker to cause a denial-of-service condition when using default admin name and password.

CVE-2024-22772 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.4 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H).

3.2.6 IMPROPER INPUT VALIDATION CWE-20

An improper input validation vulnerability exists in Hitron Systems DVR LGUVR-16H versions 1.02 through 4.02 that could allow an attacker to cause a denial-of-service condition when using default admin name and password.

CVE-2024-23842 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.4 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H).

3.3 BACKGROUND

• CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities
• COUNTRIES/AREAS DEPLOYED: Worldwide
• COMPANY HEADQUARTERS LOCATION: South Korea

3.4 RESEARCHER

Aline Eliovich, Chad Seaman, and Larry Cashdollar of Akamai Technologies reported this vulnerability to CISA.

4. MITIGATIONS

Hitron Systems has released the following updates for their DVR:

• DVR HVR-4781: Version 4.03
• DVR HVR-8781: Version 4.03
• DVR HVR-16781: Version 4.03
• DVR LGUVR-4H: Version 4.03
• DVR LGUVR-8H: Version 4.03
• DVR LGUVR-16H: Version 4.03
• For more information, see KISA’s Security Notice.

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.

CISA has received reports of this vulnerability being actively exploited.

5. UPDATE HISTORY

• January 30, 2024: Initial Publication