View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 9.1
ATTENTION: Exploitable remotely/low attack complexity
Vendor: PTC
Equipment: KEPServerEX, ThingWorx, OPC-Aggregator
Vulnerabilities: Heap-based Buffer Overflow, Improper Validation of Certificate with Host Mismatch

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker gaining Windows SYSTEM-level code execution on the service host and may cause the product to crash, leak sensitive information, or connect to the product without proper authentication.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following PTC Kepware products, are affected:

KEPServerEX: v6.14.263.0 and prior
ThingWorx Kepware Server: v6.14.263.0 and prior
ThingWorx Industrial Connectivity: All versions
OPC-Aggregator: v6.14 and prior
ThingWorx Kepware Edge: v1.7 and prior
Rockwell Automation KEPServer Enterprise: Versions v6.14.263.0 and prior
GE Digital Industrial Gateway Server: Versions v7.614 and prior
Software Toolbox TOP Server: Versions v6.14.263.0 and prior

3.2 Vulnerability Overview

3.2.1 HEAP-BASED BUFFER OVERFLOW CWE-122

KEPServerEX is vulnerable to a buffer overflow which may allow an attacker to crash the product being accessed or leak information.

CVE-2023-5908 has been assigned to this vulnerability. A CVSS v3.1 base score of 9.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H).

3.2.2 IMPROPER VALIDATION OF CERTIFICATE WITH HOST MISMATCH CWE-297

KEPServerEX does not properly validate certificates from clients which may allow unauthenticated users to connect.

CVE-2023-5909 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:H/I:N/A:N).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Multiple
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

Shawn Hoffman reported these vulnerabilities to PTC.

4. MITIGATIONS

PTC has released and recommends users update to the following versions:

KEPServerEX should upgrade to v6.15 or later
ThingWorx Kepware Server should upgrade to v6.15 or later
ThingWorx Industrial Connectivity should upgrade to ThingWorx Kepware Server v6.15 or later
OPC-Aggregator should upgrade to v6.15 or later
ThingWorx Kepware Edge: Upgrade to v1.8 or later

Refer to secure configuration guide here.

If additional questions remain, please contact PTC Technical Support.

For more information, see PTC’s advisory.

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

November 30, 2023: Initial Publication

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 7.8
ATTENTION: Low attack complexity
Vendor: Mitsubishi Electric
Equipment: FA Engineering Software Products
Vulnerability: External Control of File Name or Path

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow a malicious attacker to execute malicious code by tricking legitimate users to open a specially crafted project file, which could result in information disclosure, tampering and deletion, or a denial-of-service condition.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Mitsubishi Electric reports the following versions of FA Engineering Software Products are affected:

GX Works3: All versions
MELSOFT iQ AppPortal: All versions
MELSOFT Navigator: All versions
Motion Control Setting (Software packaged with GX Works3): All versions

3.2 Vulnerability Overview

3.2.1 External Control of File Name or Path CWE-73

Malicious code execution vulnerability due to external control of file name or path exists in multiple FA engineering software products. This vulnerability could allow an attacker to execute a malicious code by having legitimate users open a specially crafted project file, which could result in information disclosure, tampering and deletion, or a denial-of-service condition.

CVE-2023-5247 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).

3.3 BACKGROUND

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

3.4 RESEARCHER

01dGu0 of ZHEJIANG QIAN INFORMATION & TECHNOLOGY CO., LTD reported this vulnerability to Mitsubishi Electric.

4. MITIGATIONS

Mitsubishi Electric recommends that users take the following mitigation measures to minimize the risk of exploiting this vulnerability:

Install antivirus software in computers using the affected product.
Use computers with the affected product within the LAN and block remote login from untrusted networks, hosts, and users.
When connecting computers with the affected product to the Internet, use a firewall, virtual private network (VPN), etc., to prevent unauthorized access, and allow only trusted users to remote login.
Don’t open untrusted files or click untrusted links.

For additional information see Mitsubishi Electric advisory 2023-016.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. 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:

Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

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

November 30, 2023: Initial Publication

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 5.3
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Yokogawa
Equipment: STARDOM FCN/FCJ
Vulnerability: Uncontrolled Resource Consumption

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow a remote attacker to cause a denial-of-service condition to the FCN/FCJ controller by sending a specially crafted packet.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Yokogawa STARDOM FCN/FCJ, a network control system, are affected:

STARDOM FCN/FCJ: versions R1.01 through R4.31

3.2 Vulnerability Overview

3.2.1 UNCONTROLLED RESOURCE CONSUMPTION CWE-400

This vulnerability may allow to a remote attacker to cause a denial-of-service condition to the FCN/FCJ controller by sending a crafted packet. While sending the packet, the maintenance homepage of the controller could not be accessed. Therefore, functions of the maintenance homepage, changing configuration, viewing logs, etc. are not available. But the controller’s operation is not stopped by the condition.

CVE-2023-5915 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:N/I:N/A:L).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Multiple
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Japan

3.4 RESEARCHER

Roman Ezhov of Kaspersky reported this vulnerability to Yokogawa.

4. MITIGATIONS

Yokogawa has released the following mitigations for users to implement:

By using the packet filter function* of the FCN/FCJ controller, only allow connection from trusted hosts.
Take measures against the network so that an attacker cannot send a malicious packet.

Yokogawa strongly recommends all users to establish and maintain a full security program, not only for the vulnerability identified in this YSAR. Security program components are: Patch updates, Anti-virus, Backup and recovery, zoning, hardening, whitelisting, firewall, etc. Yokogawa can assist in setting up and running the security program continuously. For considering the most effective risk mitigation plan, as a starting point, Yokogawa can perform a security risk assessment.

*Revision up FCN/FCJ basic software to R4.20 or later for using the function.

More details can also be found in Yokogawa’s security advisory report number YSAR-23-0003.

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

November 30, 2023: Initial Publication

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 7.8
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Delta Electronics
Equipment: DOPSoft
Vulnerability: Stack-Based Buffer Overflow

2. RISK EVALUATION

Successful exploitation of this vulnerability could lead to remote code execution.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Delta Electronics products are affected:

DOPSoft: All versions

3.2 Vulnerability Overview

3.2.1 STACK-BASED BUFFER OVERFLOW CWE-121

The affected product is vulnerable to a stack-based buffer overflow which may allow to remote code execution if an attacker can lead a legitimate user to execute a specially crafted file.

CVE-2023-5944 has been assigned to this vulnerability. A CVSS v3 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).

3.3 BACKGROUND

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

3.4 RESEARCHER

Natnael Samson working with Trend Micro Zero Day Initiative reported this vulnerability to CISA.

4. MITIGATIONS

Delta Electronics has declared DOPSoft as end-of-life and recommends users to use DIAScreen instead. This vulnerability does not exist on the newest version of DIAScreen.

Users may download the DIAScreen v1.3.1 (or newer) on the DIAStudio download center

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. 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:

Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

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

5. UPDATE HISTORY

November 30, 2023: Initial Publication

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 2.9
ATTENTION: Exploitable locally
Vendor: Mitsubishi Electric Corporation
Equipment: GX Works2
Vulnerability: Denial-of-Service

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow a Denial-of-service (DoS) due to improper input validation in the simulation function of GX Works2 by sending specially crafted packets.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

GX Works2: all versions

3.2 Vulnerability Overview

3.2.1 Improper Input Validation CWE-20

An attacker may be able to cause denial-of-service (DoS) condition on the function by sending specially crafted packets. However, the attacker would need to send the packets from within the same personal computer where the function is running.

CVE-2023-5274 has been assigned to this vulnerability. A CVSS v3.1 base score of 2.9 has been calculated; the CVSS vector string is (AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L).

3.2.2 Improper Input Validation CWE-20

An attacker may be able to cause denial-of-service (DoS) condition on the function by sending specially crafted packets. However, the attacker would need to send the packets from within the same personal computer where the function is running.

CVE-2023-5275 has been assigned to this vulnerability. A CVSS v3.1 base score of 2.9 has been calculated; the CVSS vector string is (AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L).

3.3 BACKGROUND

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

3.4 RESEARCHER

joker63 of ZheJiangQiAnTechnology reported these vulnerabilities to Mitsubishi Electric.

4. MITIGATIONS

Mitsubishi Electric recommends that users take the following mitigation measures to minimize the risk of exploiting this vulnerability:

Install an antivirus software in your personal computer using the affected product.

Use your personal computer with the affected product within the LAN and block remote login from untrusted networks, hosts, and users.

When connecting your personal computer with the affected product to the Internet, use a firewall, virtual private network (VPN), etc., to prevent unauthorized access, and allow only trusted users to remote login.

Don’t open untrusted files or click untrusted links.

For more information, see the Mitsubishi 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. These vulnerabilities are not exploitable remotely. These vulnerabilities have a high attack complexity.

5. UPDATE HISTORY

November 28, 2023: Initial Publication

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 6.5
ATTENTION: Exploitable remotely/low attack complexity/public exploits are available
Vendor: Franklin Electric Fueling Systems
Equipment: Colibri
Vulnerability: Path Traversal

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to obtain login credentials for other users.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of FFS Colibri, a discontinued fuel inventory monitoring system, are affected:

FFS Colibri: all versions.

3.2 Vulnerability Overview

3.2.1 Path Traversal CWE-35

The discontinued FFS Colibri product allows a remote user to access files on the system including files containing login credentials for other users.

CVE-2023-5885 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).

3.3 BACKGROUND

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

3.4 RESEARCHER

Momen Eldawakhly Samurai Digital Security Ltd. reported this vulnerability to CISA.

4. MITIGATIONS

Franklin Electric Fueling Systems determined that the vulnerability only affects the Colibri product which has not been sold since 2020 and does not affect the current EVO product lines. They created a firmware update for Colibri to address the issue. Users can download the update at from the Franklin Electric website. Franklin Electric is working with distributors to make sure all known users are aware that the update is available for installation.

For further information, please contact Franklin Electric Fueling 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.
Exercise principles of least privilege.

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:

Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

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

5. UPDATE HISTORY

November 28, 2023: Initial Publication

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 9.8
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Delta Electronics
Equipment: InfraSuite Device Master
Vulnerabilities: Path Traversal, Deserialization of Untrusted Data, Exposed Dangerous Method or Function.

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to remotely execute arbitrary code and obtain plaintext credentials.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Delta Electronics products are affected:

InfraSuite Device Master: Versions 1.0.7 and prior

3.2 Vulnerability Overview

3.2.1 PATH TRAVERSAL CWE-35

In Delta Electronics InfraSuite Device Master v.1.0.7, a vulnerability exists that allows an attacker to write to any file to any location of the filesystem, which could lead to remote code execution.

CVE-2023-46690 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).

3.2.2 DESERIALIZATION OF UNTRUSTED DATA CWE-502

In Delta Electronics InfraSuite Device Master v.1.0.7, a vulnerability exists that allows an unauthenticated attacker to execute code with local administrator privileges.

CVE-2023-47207 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).

3.2.3 EXPOSED DANGEROUS METHOD OR FUNCTION CWE-749

In Delta Electronics InfraSuite Device Master v.1.0.7, a vulnerability exists that allows an unauthenticated attacker to execute arbitrary code through a single UDP packet.

CVE-2023-39226 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).

3.2.4 PATH TRAVERSAL CWE-35

In Delta Electronics InfraSuite Device Master v.1.0.7, A vulnerability exists that allows an unauthenticated attacker to disclose user information through a single UDP packet, obtain plaintext credentials, or perform NTLM relaying.

CVE-2023-47279 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:H/I:N/A:N).

3.3 BACKGROUND

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

3.4 RESEARCHER

hir0ot and Piotr Bazydlo (@chudypb) working with Trend Micro Zero Day Initiative reported these vulnerabilities to CISA.

4. MITIGATIONS

Delta Electronics recommends updating their software to v1.0.10 or later.

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

Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

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

5. UPDATE HISTORY

November 28, 2023: Initial Publication

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 7.8
ATTENTION: Low attack complexity
Vendor: Fuji Electric
Equipment: Tellus Lite V-Simulator
Vulnerabilities: Stack-based Buffer Overflow, Out-of-bounds Write, Improper Access Control

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could crash the device being accessed, allow remote code execution, or overwrite files.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Fuji Electric reports that the following versions of Tellus Lite V-Simulator remote monitoring software are affected:

Tellus Lite V-Simulator: versions prior to V4.0.19.0

3.2 Vulnerability Overview

3.2.1 Stack-based Buffer Overflow CWE-121

Stack-based buffer overflow may occur when Fuji Electric Tellus Lite V-Simulator parses a specially-crafted input file.

CVE-2023-35127 has been assigned to this vulnerability. A CVSS v3 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).

3.2.2 Out-of-bounds Write CWE-787

When Fuji Electric Tellus Lite V-Simulator parses a specially-crafted input file an out of bounds write may occur.

CVE-2023-40152 has been assigned to this vulnerability. A CVSS v3 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).

3.2.3 Improper Access Control CWE-284

A user with a standard account in Fuji Electric Tellus Lite may overwrite files in the system.

CVE-2023-5299 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:R/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

Fritz Sands and kimiya working with Trend Micro Zero Day Initiative reported these vulnerabilities to CISA.

4. MITIGATIONS

Fuji Electric recommends users update Tellus Lite V-Simulator to version 4.0.19.0.

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

Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on 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

November 21, 2023: Initial Publication

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 2.7
ATTENTION: low attack complexity
Vendor: WAGO
Equipment: PFC200 Series
Vulnerability: Externally Controlled Reference to a Resource in Another Sphere

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker with administrative privileges to access sensitive files in an unintended, undocumented way.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

WAGO reports the following products are affected:

Compact Controller CC100: Versions later than FW19, up to and including FW26
Edge Controller: Versions later than FW18, up to and including FW26
PFC100: Versions later than FW16, up to and including FW26
PFC200: Versions later than FW16, up to and including FW26
Touch Panel 600 Advanced Line: Versions later than FW16, up to and including FW26
Touch Panel 600 Marine Line: Versions later than FW16, up to and including FW26
Touch Panel 600 Standard Line: Versions later than FW16, up to and including FW26

3.2 Vulnerability Overview

3.2.1 Externally Controlled Reference to a Resource in Another Sphere CWE-610

On affected Wago products a remote attacker with administrative privileges can access files which they already have access to through an undocumented local file inclusion. This access is logged in a different log file than expected.

CVE-2023-4089 has been assigned to this vulnerability. A CVSS v3.1 base score of 2.7 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N).

3.3 BACKGROUND

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

3.4 RESEARCHER

Floris Hendriks of Radboud University reported this vulnerability to CISA.

4. MITIGATIONS

As general security measures strongly WAGO recommends:

Use general security best practices to protect systems from local and network attacks.
Do not allow direct access to the device from untrusted networks.
Update to the latest firmware (FW27) according to the table in VDE-2023-046.

CERT@VDE has published advisory VDE-2023-046 for this vulnerability.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. 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

November 21, 2023: Initial Publication

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).

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1. EXECUTIVE SUMMARY

CVSS v3 7.5
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Siemens
Equipment: OPC UA Modeling Editor (SiOME)
Vulnerability: Improper Restriction of XML External Entity Reference

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to interfere with an application’s processing of XML data and read arbitrary files in the system.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Siemens OPC UA Modeling Editor (SiOME), are affected:

OPC UA Modelling Editor (SiOME): versions prior to V2.8

3.2 Vulnerability Overview

3.2.1 IMPROPER RESTRICTION OF XML EXTERNAL ENTITY REFERENCE CWE-611

Affected products suffer from a XML external entity (XXE) injection vulnerability. This vulnerability could allow an attacker to interfere with an application’s processing of XML data and read arbitrary files in the system.

CVE-2023-46590 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Multiple
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:

Siemens OPC UA Modelling Editor (SiOME): Update to V2.8 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-197270 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.

5. UPDATE HISTORY

November 16, 2023: Initial Publication