Siemens Opcenter Quality

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 7.1
• ATTENTION: Exploitable from adjacent network/low attack complexity
• Vendor: Siemens
• Equipment: Opcenter Quality
• Vulnerabilities: Incorrect Authorization, Missing Encryption of Sensitive Data, Generation of Error Message Containing Sensitive Information, Insufficient Session Expiration, Use of a Broken or Risky Cryptographic Algorithm

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to gain complete access of the application, access to sensitive information, access to session information, or execute a Machine-In-The-Middle attack and compromise confidentiality and integrity of data.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Siemens reports that the following products are affected:

• Siemens SmartClient modules Opcenter QL Home (SC): Versions between 13.2 and 2506
• Siemens SOA Audit: Versions between 13.2 and 2506
• Siemens SOA Cockpit: Versions between 13.2 and 2506

3.2 VULNERABILITY OVERVIEW

3.2.1 INCORRECT AUTHORIZATION CWE-863

The affected application does not enforce mandatory authorization on some functionality level at server side. This could allow an authenticated attacker to gain complete access of the application.

CVE-2024-41979 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.1 has been calculated; the CVSS vector string is (CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.2 MISSING ENCRYPTION OF SENSITIVE DATA CWE-311

The affected application do not encrypt the communication in LDAP interface by default. This could allow an authenticated attacker to gain unauthorized access to sensitive information.

CVE-2024-41980 has been assigned to this vulnerability. A CVSS v3.1 base score of 3.1 has been calculated; the CVSS vector string is (CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N).

3.2.3 MISSING ENCRYPTION OF SENSITIVE DATA CWE-311

The affected application does not have adequate encryption of sensitive information. This could allow an authenticated attacker to gain access of sensitive information.

CVE-2024-41982 has been assigned to this vulnerability. A CVSS v3.1 base score of 4.8 has been calculated; the CVSS vector string is (CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N).

3.2.4 GENERATION OF ERROR MESSAGE CONTAINING SENSITIVE INFORMATION CWE-209

The affected application displays SQL statement in the error messages encountered during the generation of reports using Cockpit tool.

CVE-2024-41983 has been assigned to this vulnerability. A CVSS v3.1 base score of 3.5 has been calculated; the CVSS vector string is (CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).

3.2.5 GENERATION OF ERROR MESSAGE CONTAINING SENSITIVE INFORMATION CWE-209

The affected application improperly handles error while accessing an inaccessible resource leading to exposing the system applications.

CVE-2024-41984 has been assigned to this vulnerability. A CVSS v3.1 base score of 2.6 has been calculated; the CVSS vector string is (CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N).

3.2.6 INSUFFICIENT SESSION EXPIRATION CWE-613

The affected application does not expire the session without logout. This could allow an attacker to get unauthorized access if the session is left idle.

CVE-2024-41985 has been assigned to this vulnerability. A CVSS v3.1 base score of 2.6 has been calculated; the CVSS vector string is (CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N).

3.2.7 USE OF A BROKEN OR RISKY CRYPTOGRAPHIC ALGORITHM CWE-327

The affected application support insecure TLS 1.0 and 1.1 protocol. An attacker could achieve a man-in-the-middle attack and compromise confidentiality and integrity of data.

CVE-2024-41986 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.4 has been calculated; the CVSS vector string is (CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L).

3.3 BACKGROUND

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

3.4 RESEARCHER

Siemens reported these vulnerabilities to CISA.

4. MITIGATIONS

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

• All affected products: Update to V2506 or later version
• (CVE-2024-41979) All affected products: The SmartClient should be operated in a secured network and context only
• (CVE-2024-41979) All affected products: Remove all tools giving possibility to call SOAP-services outside from the SmartClient
• (CVE-2024-41979) All affected products: The hardening instructions mentioned in the products security concept should be followed
• (CVE-2024-41980) All affected products: Harden LDAP-interface secure protocols by enabling the SSL-flag on configuration and a proper setup of your TLS-configuration
• (CVE-2024-41980) All affected products: All the users (including in LDAP) should be given the least privileges required
• (CVE-2024-41982) All affected products: Limit the permission to access those fields using the least privilege strategy
• (CVE-2024-41983) All affected products: Do not use original table structures and accounts for reporting. Create your own reporting accounts which have access via synonyms forwarding on views representing access to result-sets the user may use for evaluation
• (CVE-2024-41983) All affected products: Use DB-tools to limit load on productive systems for reporting accounts or use offline systems for reporting
• (CVE-2024-41983) All affected products: Harden your IIS
• (CVE-2024-41983) All affected products: Prevent any scanning of structures and configurations
• (CVE-2024-41983) All affected products: Limit the information to prevent to the end-user based on the need-to-know-principle to the minimum possible information
• (CVE-2024-41984) All affected products: Hardening of the solution, including the OS and IIS, is required, with specific measures such as hiding the IIS version to enhance security
• (CVE-2024-41984) All affected products: Users should not have the possibility to scan folders and extensions of files allowed to open should be limited to the required one
• (CVE-2024-41986) All affected products: Disable all protocols (SSL v2/v3, TLS 1.0, TLS 1.1) the solution should not use.
• (CVE-2024-41986) All affected products: Ensure, TLS 1.2 is enabled if you plan to use TLS 1.2.
• (CVE-2024-41986) All affected products: Follow the instructions of the security concept of Opcenter Quality and vendors.

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-382999 in HTML and CSAF.

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

• Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
• Locate control system networks and remote devices behind firewalls and isolating them from business networks.
• When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

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

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

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

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

• 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

• August 14, 2025: Initial Republication of Siemens ProductCERT SSA-382999

• Siemens