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CVE-2021-27432 (GCVE-0-2021-27432)
Vulnerability from cvelistv5
Published
2021-05-20 15:20
Modified
2024-08-03 20:48
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-674 - UNCONTROLLED RECURSION
Summary
OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow.
References
| ▼ | URL | Tags | |
|---|---|---|---|
| ics-cert@hq.dhs.gov | https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03 | Third Party Advisory, US Government Resource | |
| af854a3a-2127-422b-91ae-364da2661108 | https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03 | Third Party Advisory, US Government Resource |
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | OPC Foundation OPC UA .NET Standard and OPC UA .NET Legacy |
Version: OPC UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy |
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ICSA-21-133-03
Vulnerability from csaf_cisa
Published
2021-05-13 00:00
Modified
2021-05-13 00:00
Summary
OPC Foundation UA Products Built with .NET Framework
Notes
CISA Disclaimer
This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov
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/.
Risk evaluation
Successful exploitation of this vulnerability could trigger a stack overflow.
Critical infrastructure sectors
Multiple
Countries/areas deployed
Worldwide
Company headquarters location
United States
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
Recommended Practices
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 onus-cert.cisa.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Recommended Practices
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.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.
Exploitability
No known public exploits specifically target this vulnerability.
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"title": "CISA Disclaimer"
},
{
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}
icsa-21-294-03
Vulnerability from csaf_cisa
Published
2021-10-21 00:00
Modified
2021-10-21 00:00
Summary
ICONICS GENESIS64 and Mitsubishi Electric MC Works64 OPC UA
Notes
CISA Disclaimer
This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov
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/.
Risk evaluation
Successful exploitation of this vulnerability could trigger a stack overflow.
Critical infrastructure sectors
Multiple Sectors
Countries/areas deployed
Worldwide
Company headquarters location
ICONICS is headquartered in the United States. Mitsubishi Electric is headquartered in Japan.
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
Recommended Practices
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 onus-cert.cisa.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Recommended Practices
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.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.
Exploitability
No known public exploits specifically target this vulnerability.
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"title": "CISA Disclaimer"
},
{
"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": "summary",
"text": "Successful exploitation of this vulnerability could trigger a stack overflow.",
"title": "Risk evaluation"
},
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"category": "other",
"text": "Multiple Sectors",
"title": "Critical infrastructure sectors"
},
{
"category": "other",
"text": "Worldwide",
"title": "Countries/areas deployed"
},
{
"category": "other",
"text": "ICONICS is headquartered in the United States. Mitsubishi Electric is headquartered in Japan.",
"title": "Company headquarters location"
},
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{
"category": "external",
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"url": "https://us-cert.cisa.gov/ics/tips/ICS-TIP-12-146-01B"
}
],
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"tracking": {
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{
"category": "product_version_range",
"name": "\u003c= 10.97",
"product": {
"name": "Hyper Historian: Versions 10.97 and prior",
"product_id": "CSAFPID-0005"
}
}
],
"category": "product_name",
"name": "Hyper Historian"
}
],
"category": "vendor",
"name": "ICONICS, Mitsubishi Electric"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2021-27432",
"cwe": {
"id": "CWE-674",
"name": "Uncontrolled Recursion"
},
"notes": [
{
"category": "summary",
"text": "The affected products are vulnerable to an uncontrollable recursion, which may trigger a stack-based buffer overflow.CVE-2021-27432 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).",
"title": "Vulnerability Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
]
},
"references": [
{
"category": "external",
"summary": "web.nvd.nist.gov",
"url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-27432"
},
{
"category": "external",
"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"remediations": [
{
"category": "mitigation",
"details": "ICONICS and Mitsubishi Electric are releasing Critical Fix Rollup packages or patches that will include the solution to this vulnerability. GENESIS64 Versions 10.97.1 and later will not be vulnerable to this exploit.",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
]
},
{
"category": "mitigation",
"details": "Place control system networks and devices behind firewalls to isolate them from the business network.",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
]
},
{
"category": "mitigation",
"details": "Minimize network exposure for all control system devices. Control system devices should not directly face the Internet.",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
]
},
{
"category": "mitigation",
"details": "Do not click web links or open unsolicited attachments in e-mail messages.",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
]
},
{
"category": "mitigation",
"details": "Leverage OPC UA security and certificates to ensure ICONICS products only connect to trusted OPC UA servers and clients.",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
]
},
{
"category": "mitigation",
"details": "Install the applicable Critical Fixes Rollup, if available.",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
]
},
{
"category": "mitigation",
"details": "ICONICS provides information and useful links related to its security updates at its company website.",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
],
"url": "http://www.iconics.com/certs"
},
{
"category": "mitigation",
"details": "Mitsubishi Electric provides information and useful links related to its security updates its company website.",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
],
"url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-016_en.pdf"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.0"
},
"products": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
]
}
]
}
]
}
ICSA-21-294-03
Vulnerability from csaf_cisa
Published
2021-10-21 00:00
Modified
2021-10-21 00:00
Summary
ICONICS GENESIS64 and Mitsubishi Electric MC Works64 OPC UA
Notes
CISA Disclaimer
This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov
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/.
Risk evaluation
Successful exploitation of this vulnerability could trigger a stack overflow.
Critical infrastructure sectors
Multiple Sectors
Countries/areas deployed
Worldwide
Company headquarters location
ICONICS is headquartered in the United States. Mitsubishi Electric is headquartered in Japan.
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
Recommended Practices
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 onus-cert.cisa.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Recommended Practices
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.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.
Exploitability
No known public exploits specifically target this vulnerability.
{
"document": {
"acknowledgments": [
{
"names": [
"Eran Jacob"
],
"organization": "the Otorio Research Team",
"summary": "reporting this vulnerability 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/"
}
},
"lang": "en-US",
"notes": [
{
"category": "general",
"text": "This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov",
"title": "CISA Disclaimer"
},
{
"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": "summary",
"text": "Successful exploitation of this vulnerability could trigger a stack overflow.",
"title": "Risk evaluation"
},
{
"category": "other",
"text": "Multiple Sectors",
"title": "Critical infrastructure sectors"
},
{
"category": "other",
"text": "Worldwide",
"title": "Countries/areas deployed"
},
{
"category": "other",
"text": "ICONICS is headquartered in the United States. Mitsubishi Electric is headquartered in Japan.",
"title": "Company headquarters location"
},
{
"category": "general",
"text": "CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.\nCISA also provides a section for control systems security recommended practices on the ICS webpage onus-cert.cisa.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.cisa.gov in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.\nOrganizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.",
"title": "Recommended Practices"
},
{
"category": "other",
"text": "No known public exploits specifically target this vulnerability.",
"title": "Exploitability"
}
],
"publisher": {
"category": "coordinator",
"contact_details": "Email: CISAservicedesk@cisa.dhs.gov;\n Toll Free: 1-888-282-0870",
"name": "CISA",
"namespace": "https://www.cisa.gov/"
},
"references": [
{
"category": "self",
"summary": "ICS Advisory ICSA-21-294-03 JSON",
"url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2021/icsa-21-294-03.json"
},
{
"category": "self",
"summary": "ICS Advisory ICSA-21-294-03 Web Version",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-21-294-03"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://us-cert.cisa.gov/ics/alerts/ICS-ALERT-10-301-01"
},
{
"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://us-cert.cisa.gov/ics/tips/ICS-TIP-12-146-01B"
}
],
"title": "ICONICS GENESIS64 and Mitsubishi Electric MC Works64 OPC UA",
"tracking": {
"current_release_date": "2021-10-21T00:00:00.000000Z",
"generator": {
"engine": {
"name": "CISA CSAF Generator",
"version": "1.0.0"
}
},
"id": "ICSA-21-294-03",
"initial_release_date": "2021-10-21T00:00:00.000000Z",
"revision_history": [
{
"date": "2021-10-21T00:00:00.000000Z",
"legacy_version": "Initial",
"number": "1",
"summary": "ICSA-21-294-03 ICONICS GENESIS64 and Mitsubishi Electric MC Works64 OPC UA "
}
],
"status": "final",
"version": "1"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c= 10.97",
"product": {
"name": "MobileHMI: Versions 10.97 and prior",
"product_id": "CSAFPID-0001"
}
}
],
"category": "product_name",
"name": "MobileHMI"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c= 10.97",
"product": {
"name": "AnalytiX: Versions 10.97 and prior",
"product_id": "CSAFPID-0002"
}
}
],
"category": "product_name",
"name": "AnalytiX"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c= 10.97",
"product": {
"name": "GENESIS64: Versions 10.97 and prior",
"product_id": "CSAFPID-0003"
}
}
],
"category": "product_name",
"name": "GENESIS64"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c= 4.04E",
"product": {
"name": "MC Works64: Versions 4.04E and prior",
"product_id": "CSAFPID-0004"
}
}
],
"category": "product_name",
"name": "MC Works64"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c= 10.97",
"product": {
"name": "Hyper Historian: Versions 10.97 and prior",
"product_id": "CSAFPID-0005"
}
}
],
"category": "product_name",
"name": "Hyper Historian"
}
],
"category": "vendor",
"name": "ICONICS, Mitsubishi Electric"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2021-27432",
"cwe": {
"id": "CWE-674",
"name": "Uncontrolled Recursion"
},
"notes": [
{
"category": "summary",
"text": "The affected products are vulnerable to an uncontrollable recursion, which may trigger a stack-based buffer overflow.CVE-2021-27432 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).",
"title": "Vulnerability Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
]
},
"references": [
{
"category": "external",
"summary": "web.nvd.nist.gov",
"url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-27432"
},
{
"category": "external",
"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"remediations": [
{
"category": "mitigation",
"details": "ICONICS and Mitsubishi Electric are releasing Critical Fix Rollup packages or patches that will include the solution to this vulnerability. GENESIS64 Versions 10.97.1 and later will not be vulnerable to this exploit.",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
]
},
{
"category": "mitigation",
"details": "Place control system networks and devices behind firewalls to isolate them from the business network.",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
]
},
{
"category": "mitigation",
"details": "Minimize network exposure for all control system devices. Control system devices should not directly face the Internet.",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
]
},
{
"category": "mitigation",
"details": "Do not click web links or open unsolicited attachments in e-mail messages.",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
]
},
{
"category": "mitigation",
"details": "Leverage OPC UA security and certificates to ensure ICONICS products only connect to trusted OPC UA servers and clients.",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
]
},
{
"category": "mitigation",
"details": "Install the applicable Critical Fixes Rollup, if available.",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
]
},
{
"category": "mitigation",
"details": "ICONICS provides information and useful links related to its security updates at its company website.",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
],
"url": "http://www.iconics.com/certs"
},
{
"category": "mitigation",
"details": "Mitsubishi Electric provides information and useful links related to its security updates its company website.",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
],
"url": "https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-016_en.pdf"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.0"
},
"products": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005"
]
}
]
}
]
}
icsa-21-133-03
Vulnerability from csaf_cisa
Published
2021-05-13 00:00
Modified
2021-05-13 00:00
Summary
OPC Foundation UA Products Built with .NET Framework
Notes
CISA Disclaimer
This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov
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/.
Risk evaluation
Successful exploitation of this vulnerability could trigger a stack overflow.
Critical infrastructure sectors
Multiple
Countries/areas deployed
Worldwide
Company headquarters location
United States
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
Recommended Practices
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 onus-cert.cisa.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Recommended Practices
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.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.
Exploitability
No known public exploits specifically target this vulnerability.
{
"document": {
"acknowledgments": [
{
"names": [
"Eran Jacob"
],
"organization": "the Otorio Research Team",
"summary": "reporting this vulnerability 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/"
}
},
"lang": "en-US",
"notes": [
{
"category": "general",
"text": "This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov",
"title": "CISA Disclaimer"
},
{
"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": "summary",
"text": "Successful exploitation of this vulnerability could trigger a stack overflow.",
"title": "Risk evaluation"
},
{
"category": "other",
"text": "Multiple",
"title": "Critical infrastructure sectors"
},
{
"category": "other",
"text": "Worldwide",
"title": "Countries/areas deployed"
},
{
"category": "other",
"text": "United States",
"title": "Company headquarters location"
},
{
"category": "general",
"text": "CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.\nCISA also provides a section for control systems security recommended practices on the ICS webpage onus-cert.cisa.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.cisa.gov in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.\nOrganizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.",
"title": "Recommended Practices"
},
{
"category": "other",
"text": "No known public exploits specifically target this vulnerability.",
"title": "Exploitability"
}
],
"publisher": {
"category": "coordinator",
"contact_details": "Email: CISAservicedesk@cisa.dhs.gov;\n Toll Free: 1-888-282-0870",
"name": "CISA",
"namespace": "https://www.cisa.gov/"
},
"references": [
{
"category": "self",
"summary": "ICS Advisory ICSA-21-133-03 JSON",
"url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2021/icsa-21-133-03.json"
},
{
"category": "self",
"summary": "ICS Advisory ICSA-21-133-03 Web Version",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-21-133-03"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://us-cert.cisa.gov/ics/alerts/ICS-ALERT-10-301-01"
},
{
"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://us-cert.cisa.gov/ics/tips/ICS-TIP-12-146-01B"
}
],
"title": "OPC Foundation UA Products Built with .NET Framework",
"tracking": {
"current_release_date": "2021-05-13T00:00:00.000000Z",
"generator": {
"engine": {
"name": "CISA CSAF Generator",
"version": "1.0.0"
}
},
"id": "ICSA-21-133-03",
"initial_release_date": "2021-05-13T00:00:00.000000Z",
"revision_history": [
{
"date": "2021-05-13T00:00:00.000000Z",
"legacy_version": "Initial",
"number": "1",
"summary": "ICSA-21-133-03 OPC Foundation UA Products Built with NET Framework"
}
],
"status": "final",
"version": "1"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c 1.4.365.48",
"product": {
"name": "OPC UA .NET Standard: versions prior to 1.4.365.48",
"product_id": "CSAFPID-0001"
}
}
],
"category": "product_name",
"name": "OPC UA .NET Standard"
}
],
"category": "vendor",
"name": "OPC Foundation"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2021-27432",
"cwe": {
"id": "CWE-674",
"name": "Uncontrolled Recursion"
},
"notes": [
{
"category": "summary",
"text": "The affected products are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow.CVE-2021-27432 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).",
"title": "Vulnerability Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-0001"
]
},
"references": [
{
"category": "external",
"summary": "web.nvd.nist.gov",
"url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-27432"
},
{
"category": "external",
"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "OPC Foundation recommends users install the OPC UA .NET Standard stack update.",
"product_ids": [
"CSAFPID-0001"
],
"url": "https://github.com/OPCFoundation/UA-.NETStandard/releases/tag/1.4.365.48"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.0"
},
"products": [
"CSAFPID-0001"
]
}
]
}
]
}
gsd-2021-27432
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-27432",
"description": "OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow.",
"id": "GSD-2021-27432"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2021-27432"
],
"details": "OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow.",
"id": "GSD-2021-27432",
"modified": "2023-12-13T01:23:35.543558Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
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},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
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"problemtype": {
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}
]
}
},
"gitlab.com": {
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"fixed_versions": [
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],
"identifier": "CVE-2021-27432",
"identifiers": [
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],
"not_impacted": "All versions starting from 1.4.365.48",
"package_slug": "nuget/OPCFoundation.NetStandard.Opc.Ua",
"pubdate": "2021-05-20",
"solution": "Upgrade to version 1.4.365.48 or above.",
"title": "Uncontrolled Recursion",
"urls": [
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"https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03"
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"uuid": "45358f97-5228-4ed4-9f8e-9c433f9e8a9c"
},
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"not_impacted": "",
"package_slug": "nuget/OPCUASDKNET46",
"pubdate": "2021-05-20",
"solution": "Unfortunately, there is no solution available yet.",
"title": "Uncontrolled Recursion",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2021-27432",
"https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03"
],
"uuid": "867de3e4-ba75-4f82-9df6-ac188b8a756c"
}
]
},
"nvd.nist.gov": {
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"nodes": [
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"cpe_name": [],
"vulnerable": true
},
{
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],
"operator": "OR"
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"ID": "CVE-2021-27432"
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}
]
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"problemtype": {
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"value": "CWE-674"
}
]
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]
},
"references": {
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"name": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03",
"refsource": "MISC",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
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}
]
}
},
"impact": {
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"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
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"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6
}
},
"lastModifiedDate": "2021-06-01T16:39Z",
"publishedDate": "2021-05-20T16:15Z"
}
}
}
ghsa-5rm8-9376-7gg5
Vulnerability from github
Published
2022-05-24 19:02
Modified
2022-05-24 19:02
VLAI Severity ?
Details
OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow.
{
"affected": [],
"aliases": [
"CVE-2021-27432"
],
"database_specific": {
"cwe_ids": [
"CWE-674"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-05-20T16:15:00Z",
"severity": "HIGH"
},
"details": "OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow.",
"id": "GHSA-5rm8-9376-7gg5",
"modified": "2022-05-24T19:02:50Z",
"published": "2022-05-24T19:02:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-27432"
},
{
"type": "WEB",
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03"
}
],
"schema_version": "1.4.0",
"severity": []
}
fkie_cve-2021-27432
Vulnerability from fkie_nvd
Published
2021-05-20 16:15
Modified
2024-11-21 05:57
Severity ?
Summary
OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow.
References
| ▼ | URL | Tags | |
|---|---|---|---|
| ics-cert@hq.dhs.gov | https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03 | Third Party Advisory, US Government Resource | |
| af854a3a-2127-422b-91ae-364da2661108 | https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03 | Third Party Advisory, US Government Resource |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| opcfoundation | ua-.net-legacy | - | |
| opcfoundation | ua_.net_standard_stack | * |
{
"configurations": [
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"criteria": "cpe:2.3:a:opcfoundation:ua-.net-legacy:-:*:*:*:*:*:*:*",
"matchCriteriaId": "B04F956C-0D6B-453D-AA1B-4AB522B0C474",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:opcfoundation:ua_.net_standard_stack:*:*:*:*:*:*:*:*",
"matchCriteriaId": "2A02376A-04D5-48A2-9D3E-242FA6E3C00B",
"versionEndExcluding": "1.4.365.48",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow."
},
{
"lang": "es",
"value": "OPC Foundation UA ??.NET Standard versiones anteriores a 1.4.365.48 y OPC UA .NET Legacy, son vulnerables a una recursividad no controlada, que puede permitir a un atacante desencadenar un desbordamiento de pila"
}
],
"id": "CVE-2021-27432",
"lastModified": "2024-11-21T05:57:58.743",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
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"accessVector": "NETWORK",
"authentication": "NONE",
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"baseScore": 5.0,
"confidentialityImpact": "NONE",
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"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
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"impactScore": 2.9,
"obtainAllPrivilege": false,
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"source": "nvd@nist.gov",
"type": "Primary",
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}
],
"cvssMetricV31": [
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"attackVector": "NETWORK",
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"baseScore": 7.5,
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"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
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]
},
"published": "2021-05-20T16:15:07.967",
"references": [
{
"source": "ics-cert@hq.dhs.gov",
"tags": [
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"US Government Resource"
],
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03"
},
{
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],
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}
],
"sourceIdentifier": "ics-cert@hq.dhs.gov",
"vulnStatus": "Modified",
"weaknesses": [
{
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{
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"value": "CWE-674"
}
],
"source": "ics-cert@hq.dhs.gov",
"type": "Primary"
}
]
}
cnvd-2021-39138
Vulnerability from cnvd
Title: Siemens SIMATIC OPC UA 存在未明漏洞
Description:
Siemens SIMATIC CP443-1 OPC UA9是德国西门子（Siemens）公司的一款通信处理器。
OPC UA 存在安全漏洞。该漏洞源于程序容易受到不受控制的递归，攻击者可利用该漏洞触发堆栈溢出。
Severity: 中
Patch Name: Siemens SIMATIC OPC UA 存在未明漏洞的补丁
Patch Description:
Siemens SIMATIC CP443-1 OPC UA9是德国西门子（Siemens）公司的一款通信处理器。
OPC UA 存在安全漏洞。该漏洞源于程序容易受到不受控制的递归，攻击者可利用该漏洞触发堆栈溢出。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。
Formal description:
目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://github.com/OPCFoundation/UA-.NETStandard/releases/tag/1.4.365.48
Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-27432
Impacted products
| Name | ['Siemens OPC Foundation UA .NET Standard <1.4.365.48', 'Siemens OPC UA .NET Legacy'] |
|---|
{
"cves": {
"cve": {
"cveNumber": "CVE-2021-27432"
}
},
"description": "Siemens SIMATIC CP443-1 OPC UA9\u662f\u5fb7\u56fd\u897f\u95e8\u5b50\uff08Siemens\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u901a\u4fe1\u5904\u7406\u5668\u3002\n\nOPC UA \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u5bb9\u6613\u53d7\u5230\u4e0d\u53d7\u63a7\u5236\u7684\u9012\u5f52\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u89e6\u53d1\u5806\u6808\u6ea2\u51fa\u3002",
"formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://github.com/OPCFoundation/UA-.NETStandard/releases/tag/1.4.365.48",
"isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
"number": "CNVD-2021-39138",
"openTime": "2021-06-03",
"patchDescription": "Siemens SIMATIC CP443-1 OPC UA9\u662f\u5fb7\u56fd\u897f\u95e8\u5b50\uff08Siemens\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u901a\u4fe1\u5904\u7406\u5668\u3002\r\n\r\nOPC UA \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u5bb9\u6613\u53d7\u5230\u4e0d\u53d7\u63a7\u5236\u7684\u9012\u5f52\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u89e6\u53d1\u5806\u6808\u6ea2\u51fa\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
"patchName": "Siemens SIMATIC OPC UA \u5b58\u5728\u672a\u660e\u6f0f\u6d1e\u7684\u8865\u4e01",
"products": {
"product": [
"Siemens OPC Foundation UA .NET Standard \u003c1.4.365.48",
"Siemens OPC UA .NET Legacy"
]
},
"referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-27432",
"serverity": "\u4e2d",
"submitTime": "2021-05-14",
"title": "Siemens SIMATIC OPC UA \u5b58\u5728\u672a\u660e\u6f0f\u6d1e"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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