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 8.5
• ATTENTION: Exploitable remotely/low attack complexity
• Vendor: Siemens
• Equipment: SINEMA Remote Connect Server
• Vulnerabilities: Command Injection

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an authenticated local attacker to execute arbitrary code with system privileges.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Siemens reports that the following versions of SINEMA Remote Connect management platform are affected:

• SINEMA Remote Connect Client: versions prior to V3.2 HF1

3.2 Vulnerability Overview

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

The system service of affected applications is vulnerable to command injection due to missing server side input sanitation when loading VPN configurations. This could allow an authenticated local attacker to execute arbitrary code with system privileges.

CVE-2024-39567 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2024-39567. A base score of 8.5 has been calculated; the CVSS vector string is (CVSS4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

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

The system service of affected applications is vulnerable to command injection due to missing server side input sanitation when loading proxy configurations. This could allow an authenticated local attacker to execute arbitrary code with system privileges.

CVE-2024-39568 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2024-39568. A base score of 8.5 has been calculated; the CVSS vector string is (CVSS4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

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

The system service of affected applications is vulnerable to command injection due to missing server side input sanitation when loading VPN configurations. This could allow an administrative remote attacker running a corresponding SINEMA Remote Connect Server to execute arbitrary code with system privileges on the client system.

CVE-2024-39569 has been assigned to this vulnerability. A CVSS v3 base score of 6.6 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2024-39569. A base score of 7.5 has been calculated; the CVSS vector string is (CVSS4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND

• CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing, Commercial Facilities, Energy, Food and Agriculture, Healthcare and Public Health, Transportation Systems, 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 released a new version for SINEMA Remote Connect Client and recommends updating to version (V3.2 HF1 or later.

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-868282 in HTML and CSAF.

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

5. UPDATE HISTORY

• July 11, 2024: Initial Publication

Today, CISA and FBI are releasing their newest Secure by Design Alert in the series, Eliminating OS Command Injection Vulnerabilities, in response to recent well-publicized threat actor campaigns that exploited OS command injection defects in network edge devices (CVE-2024-20399, CVE-2024-3400, CVE-2024-21887) to target and compromise users. These vulnerabilities allowed unauthenticated malicious actors to remotely execute code on network edge devices.

OS command injection vulnerabilities have long been preventable by clearly separating user input from the contents of a command. Despite this finding, OS command injection vulnerabilities—many of which result from CWE-78—are still a prevalent class of vulnerability.

CISA and FBI urge CEOs and other business leaders at technology manufacturers to request their technical leaders analyze past occurrences of this class of defect and develop a plan to eliminate them in the future. For more on how to champion Secure by Design principles, visit our webpage. To join with the 150+ other companies who have signed our Secure by Design pledge, visit here.

CISA has collaborated with the Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) to release an advisory, People’s Republic of China (PRC) Ministry of State Security APT40 Tradecraft in Action outlining a PRC state-sponsored cyber group’s activity. The following organizations also collaborated with ASD’s ACSC on the guidance:

• The National Security Agency (NSA);
• The Federal Bureau of Investigation (FBI);
• The United Kingdom’s National Cyber Security Centre (NCSC-UK);
• The Canadian Centre for Cyber Security (CCCS);
• The New Zealand National Cyber Security Centre (NCSC-NZ);
• The German Federal Intelligence Service (BND) and Federal Office for the Protection of the Constitution (BfV);
• The Republic of Korea’s National Intelligence Service (NIS) and NIS’ National Cyber Security Center (NCSC); and
• Japan’s National Center of Incident Readiness and Strategy for Cybersecurity (NISC) and National Policy Agency (NPA).

The advisory is based on current ACSC-led incident response investigations and shared understanding of a PRC state-sponsored cyber group, APT40—also known as Kryptonite Panda, GINGHAM TYPHOON, Leviathan and Bronze Mohawk in industry reporting.

APT 40 has previously targeted organizations in various countries, including Australia and the United States. Notably, APT 40 possesses the ability to quickly transform and adapt vulnerability proofs of concept (POCs) for targeting, reconnaissance, and exploitation operations. APT 40 identifies new exploits within widely used public software such as Log4J, Atlassian Confluence and Microsoft Exchange to target the infrastructure of the associated vulnerability.

CISA urges all organizations and software manufacturers to review the advisory to help identify, prevent, and remediate APT 40 intrusions. Software vendors are also urged to incorporate Secure by Design principles into their practices to limit the impact of threat actor techniques and to strengthen the security posture of their products for their customers.

For more information on PRC state-sponsored threat actor activity, see CISA’s People’s Republic of China Cyber Threat. To learn more about secure by design principles and practices, visit CISA’s Secure by Design webpage.

View CSAF

1. EXECUTIVE SUMMARY

• CVSS v4 9.3
• ATTENTION: Exploitable remotely/low attack complexity
• Vendor: mySCADA
• Equipment: myPRO
• Vulnerability: Use of Hard-coded Password

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to remotely execute code on the affected device.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following mySCADA products are affected:

• myPRO: Versions prior to 8.31.0

3.2 Vulnerability Overview

3.2.1 USE OF HARD-CODED PASSWORD CWE-259

The affected application uses a hard-coded password which could allow an attacker to remotely execute code on the affected device.

CVE-2024-4708 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).

A CVSS v4 score has also been calculated for CVE-2024-4708. A base score of 9.3 has been calculated; the CVSS vector string is (CVSS4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND

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

3.4 RESEARCHER

Nassim Asrir working with Trend Micro Zero Day Initiative reported this vulnerability to CISA.

4. MITIGATIONS

mySCADA recommends updating myPRO to v8.31.0.

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

• July 2, 2024: Initial Publication

Progress Software released a security bulletin to address a vulnerability in MOVEit Transfer. A cyber threat actor could exploit this vulnerability to take control of an affected system.

Users and administrators are encouraged to review the following bulletin and apply the necessary updates:

• MOVEit Transfer Critical Security Alert Bulletin – June 2024 – (CVE-2024-5806)