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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.1712 Advisory (icsa-22-104-07) Siemens Mendix 20 April 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Siemens Mendix Publisher: ICS-CERT Operating System: Network Appliance Resolution: Patch/Upgrade CVE Names: CVE-2022-27241 Original Bulletin: https://us-cert.cisa.gov/ics/advisories/icsa-22-104-07 Comment: CVSS (Max): 5.3 CVE-2022-27241 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N) CVSS Source: ICS-CERT Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - --------------------------BEGIN INCLUDED TEXT-------------------- ICS Advisory (ICSA-22-104-07) Siemens Mendix Original release date: April 14, 2022 Legal Notice All information products included in https://us-cert.cisa.gov/ics are provided "as is" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see https://us-cert.cisa.gov/tlp/ . 1. EXECUTIVE SUMMARY o CVSS v3 5.3 o ATTENTION: Exploitable remotely/low attack complexity o Vendor: Siemens o Equipment: Mendix o Vulnerability: Exposure of Sensitive Information to an Unauthorized Actor 2. RISK EVALUATION Successful exploitation of this vulnerability could allow an unauthenticated remote attacker to read sensitive data. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of Mendix, a software platform to build mobile and web applications, are affected: o Mendix applications using Mendix 7: All versions o Mendix applications using Mendix 8: All versions o Mendix applications using Mendix 9: All versions prior to 9.11 3.2 VULNERABILITY OVERVIEW 3.2.1 EXPOSURE OF SENSITIVE INFORMATION TO AN UNAUTHORIZED ACTOR CWE-200 Applications built with an affected system publicly expose the internal project structure. This could allow an unauthenticated remote attacker to read confidential information. CVE-2022-27241 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/ C:L/I:N/A:N ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Multiple Sectors o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: Germany 3.4 RESEARCHER Siemens reported this vulnerability to CISA. 4. MITIGATIONS Siemens has provided the following specific workarounds and mitigations: o Mendix Applications using Mendix 7: No fix currently planned o Mendix Applications using Mendix 8: No fix currently planned o Mendix Applications using Mendix9: Update to Version 9.11 or later As a general security measure, Siemens strongly recommends protecting network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens' operational guidelines for industrial security , and to follow the recommendations in the product manuals. Additional information on industrial security by Siemens can be found at: https://www.siemens.com/industrialsecurity For more information on this vulnerability and more detailed mitigation instructions, please see Siemens Security Advisory SSA-414513 CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should: o Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet . o Locate control system networks and remote devices behind firewalls and isolate them from the business network. o When remote access is required, use 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 its 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 recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies . Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on cisa.gov in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies . Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents. No known public exploits specifically target this vulnerability. For any questions related to this report, please contact the CISA at: Email: CISAservicedesk@cisa.dhs.gov Toll Free: 1-888-282-0870 CISA continuously strives to improve its products and services. You can help by choosing one of the links below to provide feedback about this product. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBYl+ZUeNLKJtyKPYoAQj0cA//XTHEr1ewrEE34onJH5YEqwq9J45fxyFy CPVX+etNKx8hun9vHgSnYxSBz49zFliZJwM183ozeokcrbbA/tVAcgykluVarGPA uZJtaFjx76OFttk4rWei0Pe7sNp65Ie+K8BiuPo6fymkhsLNIGJ6YY9HDtbOmGo7 tT+X37jRlcJhHyJ7VGgJOHs09c2NTnMSPy1fyjSbLRM++QIaskXzSYs7W3l9iHnu WO21jR7kPT+DIk4Zf5l+yF98+SDDx1+Bu5TQSLgF8jgdxBSEyGGE2bVUbF3nFcF4 YInpYdEG9cfWPt260gG2DKSz9PCLChHnTrUpqhbkWCSbqvpv6roJsa1SbW2SPxYF unqIvVgf47x4c7hUW3LRIOjX9eHC2v8dVdI7wVFSkeJrJtFffKn/XtZXUBIl1mww lrlFqGGCzeEPzIWDNYeUw1IWv8Br5R8YMFZdG3o6gM63lN6UuKA4bpZM0DvI12Y/ DrQ/kAAPOzbpytwyU8cS3aXzGdjDmosY6H0WvAW9fCC6x+W0IG24NfvkQrlVTNIz twUgqJuZBrdXV3WcCvSXEznpXlvs5bPVZYrvPJbQFKfWG8Xp7sUXrNZyiwodvJqe 2BsYiaaoIJIdAvxY8fdHzJOu5YUF0c/dDxcoT6KAGucU2HPnul//wCjOrwzg6Ltm qBx1IeSp9yw= =jx7q -----END PGP SIGNATURE-----