{
"document": {
"acknowledgments": [
{
"organization": "Siemens ProductCERT",
"summary": "reporting these vulnerabilities to CISA."
}
],
"category": "Siemens 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": "SIMATIC TIM 1531 IRC devices are vulnerable to multiple vulnerabilities in the third party component libcurl that could allow an attacker to extract sensitive information and pass a revoked certificate as valid.\n\nSiemens has released an update for SIMATIC TIM 1531 IRC and recommends to update to the latest versions.",
"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: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.\n\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-200951: Multiple Vulnerabilities in Third-Party Component libcurl of TIM Devices - CSAF Version",
"url": "https://cert-portal.siemens.com/productcert/csaf/ssa-200951.json"
},
{
"category": "self",
"summary": "SSA-200951: Multiple Vulnerabilities in Third-Party Component libcurl of TIM Devices - TXT Version",
"url": "https://cert-portal.siemens.com/productcert/txt/ssa-200951.txt"
},
{
"category": "self",
"summary": "SSA-200951: Multiple Vulnerabilities in Third-Party Component libcurl of TIM Devices - PDF Version",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-200951.pdf"
},
{
"category": "self",
"summary": "ICS Advisory ICSA-21-159-10 JSON",
"url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2021/icsa-21-159-10.json"
},
{
"category": "self",
"summary": "ICS Advisory ICSA-21-159-10 - Web Version",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-21-159-10"
},
{
"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 SIMATIC TIM libcurl",
"tracking": {
"current_release_date": "2021-06-08T00:00:00.000000Z",
"generator": {
"engine": {
"name": "CISA CSAF Generator",
"version": "1.0.0"
}
},
"id": "ICSA-21-159-10",
"initial_release_date": "2021-06-08T00:00:00.000000Z",
"revision_history": [
{
"date": "2021-06-08T00:00:00.000000Z",
"legacy_version": "1.0",
"number": "1",
"summary": "Publication Date"
}
],
"status": "final",
"version": "1"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "<V2.2",
"product": {
"name": "SIMATIC TIM 1531 IRC (incl. SIPLUS NET variants)",
"product_id": "CSAFPID-0001"
}
}
],
"category": "product_name",
"name": "SIMATIC TIM 1531 IRC (incl. SIPLUS NET variants)"
}
],
"category": "vendor",
"name": "Siemens"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2020-8169",
"cwe": {
"id": "CWE-200",
"name": "Exposure of Sensitive Information to an Unauthorized Actor"
},
"notes": [
{
"category": "summary",
"text": "The libcurl library versions 7.62.0 to and including 7.70.0 are vulnerable to an information disclosure vulnerability that can lead to a partial password being leaked over the network and to the DNS server(s).",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-0001"
]
},
"references": [
{
"summary": "CVE-2020-8169 - SIMATIC TIM 1531 IRC (incl. SIPLUS NET variants)",
"url": "https://support.industry.siemens.com/cs/ww/en/view/109798331/"
},
{
"summary": "CVE-2020-8169 Mitre 5.0 json",
"url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2020-8169.json"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "Update to V2.2 or later version",
"product_ids": [
"CSAFPID-0001"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109798331/"
},
{
"category": "mitigation",
"details": "Restrict access to the device to the internal or VPN network and to trusted IP addresses only",
"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:H/I:N/A:N/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-0001"
]
}
],
"title": "CVE-2020-8169"
},
{
"cve": "CVE-2020-8286",
"cwe": {
"id": "CWE-295",
"name": "Improper Certificate Validation"
},
"notes": [
{
"category": "summary",
"text": "The libcurl library versions 7.41.0 to and including 7.73.0 are vulnerable to an improper check for certificate revocation due to insufficient verification of the OCSP response. This vulnerability could allow an attacker to pass a revoked certificate as valid.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-0001"
]
},
"references": [
{
"summary": "CVE-2020-8286 - SIMATIC TIM 1531 IRC (incl. SIPLUS NET variants)",
"url": "https://support.industry.siemens.com/cs/ww/en/view/109798331/"
},
{
"summary": "CVE-2020-8286 Mitre 5.0 json",
"url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2020-8286.json"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "Update to V2.2 or later version",
"product_ids": [
"CSAFPID-0001"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109798331/"
},
{
"category": "mitigation",
"details": "Restrict access to the device to the internal or VPN network and to trusted IP addresses only",
"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:H/A:N/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-0001"
]
}
],
"title": "CVE-2020-8286"
}
]
}