ICSA-23-047-03
Vulnerability from csaf_cisa
Published
2023-02-14 00:00
Modified
2023-02-14 00:00
Summary
Siemens Brownfield Connectivity Client

Notes

Summary
Siemens has released a new version for Brownfield Connectivity - Client that contains fixes for multiple vulnerabilities in the underlying OpenSSL library. Successful exploitation of these vulnerabilities could lead to Denial of Service (DoS). Siemens has released an update for Brownfield Connectivity - Client and recommends to update to the latest version.
General Recommendations
As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-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
Additional Resources
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories
Terms of Use
Siemens Security Advisories are subject to the terms and conditions contained in Siemens' underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter "License Terms"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens' Global Website (https://www.siemens.com/terms_of_use, hereinafter "Terms of Use"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use.
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/.
Advisory Conversion Disclaimer
This CISA CSAF advisory was converted from Siemens ProductCERT's CSAF advisory.
Critical infrastructure sectors
Multiple
Countries/areas deployed
Worldwide
Company headquarters location
Germany
Recommended Practices
CISA recommends users take defensive measures to minimize the exploitation risk of this vulnerability.
Recommended Practices
Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet.
Recommended Practices
Locate control system networks and remote devices behind firewalls and isolate them from business networks.
Recommended Practices
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 recent version available. Also recognize VPN is only as secure as its connected devices.
Recommended Practices
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
Recommended Practices
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.
Recommended Practices
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.
Recommended Practices
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.


To clipboard 

{
   document: {
      acknowledgments: [
         {
            organization: "Siemens ProductCERT",
            summary: "reporting these vulnerabilities to CISA.",
         },
      ],
      category: "csaf_security_advisory",
      csaf_version: "2.0",
      distribution: {
         text: "Disclosure is not limited",
         tlp: {
            label: "WHITE",
            url: "https://us-cert.cisa.gov/tlp/",
         },
      },
      notes: [
         {
            category: "summary",
            text: "Siemens has released a new version for Brownfield Connectivity - Client that contains fixes for multiple vulnerabilities in the underlying OpenSSL library. Successful exploitation of these vulnerabilities could lead to Denial of Service (DoS).\n\nSiemens has released an update for Brownfield Connectivity - Client and recommends to update to the latest version.",
            title: "Summary",
         },
         {
            category: "general",
            text: "As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: \nhttps://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.\nAdditional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity",
            title: "General Recommendations",
         },
         {
            category: "general",
            text: "For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories",
            title: "Additional Resources",
         },
         {
            category: "legal_disclaimer",
            text: "Siemens Security Advisories are subject to the terms and conditions contained in Siemens' underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter \"License Terms\"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens' Global Website (https://www.siemens.com/terms_of_use, hereinafter \"Terms of Use\"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use.",
            title: "Terms of Use",
         },
         {
            category: "legal_disclaimer",
            text: "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/.",
            title: "Legal Notice",
         },
         {
            category: "other",
            text: "This CISA CSAF advisory was converted from Siemens ProductCERT's CSAF advisory.",
            title: "Advisory Conversion Disclaimer",
         },
         {
            category: "other",
            text: "Multiple",
            title: "Critical infrastructure sectors",
         },
         {
            category: "other",
            text: "Worldwide",
            title: "Countries/areas deployed",
         },
         {
            category: "other",
            text: "Germany",
            title: "Company headquarters location",
         },
         {
            category: "general",
            text: "CISA recommends users take defensive measures to minimize the exploitation risk of this vulnerability.",
            title: "Recommended Practices",
         },
         {
            category: "general",
            text: "Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet.",
            title: "Recommended Practices",
         },
         {
            category: "general",
            text: "Locate control system networks and remote devices behind firewalls and isolate them from business networks.",
            title: "Recommended Practices",
         },
         {
            category: "general",
            text: "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 recent version available. Also recognize VPN is only as secure as its connected devices.",
            title: "Recommended Practices",
         },
         {
            category: "general",
            text: "CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.",
            title: "Recommended Practices",
         },
         {
            category: "general",
            text: "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.",
            title: "Recommended Practices",
         },
         {
            category: "general",
            text: "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.",
            title: "Recommended Practices",
         },
         {
            category: "general",
            text: "Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.",
            title: "Recommended Practices",
         },
      ],
      publisher: {
         category: "other",
         contact_details: "central@cisa.dhs.gov",
         name: "CISA",
         namespace: "https://www.cisa.gov/",
      },
      references: [
         {
            category: "self",
            summary: "SSA-953464: Multiple Vulnerabilites in Siemens Brownfield Connectivity - Client before V2.15 - CSAF Version",
            url: "https://cert-portal.siemens.com/productcert/csaf/ssa-953464.json",
         },
         {
            category: "self",
            summary: "SSA-953464: Multiple Vulnerabilites in Siemens Brownfield Connectivity - Client before V2.15 - TXT Version",
            url: "https://cert-portal.siemens.com/productcert/txt/ssa-953464.txt",
         },
         {
            category: "self",
            summary: "SSA-953464: Multiple Vulnerabilites in Siemens Brownfield Connectivity - Client before V2.15 - PDF Version",
            url: "https://cert-portal.siemens.com/productcert/pdf/ssa-953464.pdf",
         },
         {
            category: "self",
            summary: "ICS Advisory ICSA-23-047-03 JSON",
            url: "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2023/icsa-23-047-03.json",
         },
         {
            category: "self",
            summary: "ICS Advisory ICSA-23-047-03 - Web Version",
            url: "https://www.cisa.gov/news-events/ics-advisories/icsa-23-047-03",
         },
         {
            category: "external",
            summary: "Recommended Practices",
            url: "https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01",
         },
         {
            category: "external",
            summary: "Recommended Practices",
            url: "https://www.cisa.gov/resources-tools/resources/ics-recommended-practices",
         },
         {
            category: "external",
            summary: "Recommended Practices",
            url: "https://www.cisa.gov/topics/industrial-control-systems",
         },
         {
            category: "external",
            summary: "Recommended Practices",
            url: "https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf",
         },
         {
            category: "external",
            summary: "Recommended Practices",
            url: "https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf",
         },
         {
            category: "external",
            summary: "Recommended Practices",
            url: "https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B",
         },
      ],
      title: "Siemens Brownfield Connectivity Client",
      tracking: {
         current_release_date: "2023-02-14T00:00:00.000000Z",
         generator: {
            engine: {
               name: "CISA CSAF Generator",
               version: "1.0.0",
            },
         },
         id: "ICSA-23-047-03",
         initial_release_date: "2023-02-14T00:00:00.000000Z",
         revision_history: [
            {
               date: "2023-02-14T00:00:00.000000Z",
               legacy_version: "1.0",
               number: "1",
               summary: "Publication Date",
            },
         ],
         status: "final",
         version: "1",
      },
   },
   product_tree: {
      branches: [
         {
            branches: [
               {
                  branches: [
                     {
                        category: "product_version_range",
                        name: "<V2.15",
                        product: {
                           name: "Brownfield Connectivity - Client",
                           product_id: "CSAFPID-0001",
                        },
                     },
                  ],
                  category: "product_name",
                  name: "Brownfield Connectivity - Client",
               },
            ],
            category: "vendor",
            name: "Siemens",
         },
      ],
   },
   vulnerabilities: [
      {
         cve: "CVE-2022-1292",
         cwe: {
            id: "CWE-78",
            name: "Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')",
         },
         notes: [
            {
               category: "summary",
               text: "The c_rehash script does not properly sanitise shell metacharacters to prevent command injection.",
               title: "Summary",
            },
         ],
         product_status: {
            known_affected: [
               "CSAFPID-0001",
            ],
         },
         remediations: [
            {
               category: "vendor_fix",
               details: "Update to V2.15 or later version\nContact customer support to obtain the update",
               product_ids: [
                  "CSAFPID-0001",
               ],
            },
         ],
         scores: [
            {
               cvss_v3: {
                  baseScore: 9.8,
                  baseSeverity: "CRITICAL",
                  vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C",
                  version: "3.1",
               },
               products: [
                  "CSAFPID-0001",
               ],
            },
         ],
         title: "CVE-2022-1292",
      },
      {
         cve: "CVE-2022-1343",
         cwe: {
            id: "CWE-295",
            name: "Improper Certificate Validation",
         },
         notes: [
            {
               category: "summary",
               text: "Under certain circumstances, the command line OCSP verify function reports successful verification when the varification in fact failed. In this case the incorrect successful response will also be accompanied by error messages showing the failure and contradicting the apparently successful result.",
               title: "Summary",
            },
         ],
         product_status: {
            known_affected: [
               "CSAFPID-0001",
            ],
         },
         remediations: [
            {
               category: "vendor_fix",
               details: "Update to V2.15 or later version\nContact customer support to obtain the update",
               product_ids: [
                  "CSAFPID-0001",
               ],
            },
         ],
         scores: [
            {
               cvss_v3: {
                  baseScore: 5.3,
                  baseSeverity: "MEDIUM",
                  vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C",
                  version: "3.1",
               },
               products: [
                  "CSAFPID-0001",
               ],
            },
         ],
         title: "CVE-2022-1343",
      },
      {
         cve: "CVE-2022-1434",
         cwe: {
            id: "CWE-327",
            name: "Use of a Broken or Risky Cryptographic Algorithm",
         },
         notes: [
            {
               category: "summary",
               text: "When using the RC4-MD5 ciphersuite, which is disabled by default, an attacker is able to modify data in transit due to an incorrect use of the AAD data as the MAC key in OpenSSL 3.0. An attacker is not able to decrypt any communication.",
               title: "Summary",
            },
         ],
         product_status: {
            known_affected: [
               "CSAFPID-0001",
            ],
         },
         remediations: [
            {
               category: "vendor_fix",
               details: "Update to V2.15 or later version\nContact customer support to obtain the update",
               product_ids: [
                  "CSAFPID-0001",
               ],
            },
         ],
         scores: [
            {
               cvss_v3: {
                  baseScore: 5.9,
                  baseSeverity: "MEDIUM",
                  vectorString: "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:P/RL:O/RC:C",
                  version: "3.1",
               },
               products: [
                  "CSAFPID-0001",
               ],
            },
         ],
         title: "CVE-2022-1434",
      },
      {
         cve: "CVE-2022-1473",
         cwe: {
            id: "CWE-404",
            name: "Improper Resource Shutdown or Release",
         },
         notes: [
            {
               category: "summary",
               text: "The used OpenSSL version improperly reuses memory when decoding certificates or keys. This can lead to a process termination and Denial of Service for long lived processes.",
               title: "Summary",
            },
         ],
         product_status: {
            known_affected: [
               "CSAFPID-0001",
            ],
         },
         remediations: [
            {
               category: "vendor_fix",
               details: "Update to V2.15 or later version\nContact customer support to obtain the update",
               product_ids: [
                  "CSAFPID-0001",
               ],
            },
         ],
         scores: [
            {
               cvss_v3: {
                  baseScore: 7.5,
                  baseSeverity: "HIGH",
                  vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C",
                  version: "3.1",
               },
               products: [
                  "CSAFPID-0001",
               ],
            },
         ],
         title: "CVE-2022-1473",
      },
   ],
}


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