VDE-2021-029
Vulnerability from csaf_phoenixcontactgmbhcokg - Published: 2021-08-04 07:58 - Updated: 2025-05-14 12:28Summary
PHOENIX CONTACT: DoS for PLCnext Control devices in versions <2021.0.5 LTS
Notes
Summary: A device on the same network as the controller sending a special crafted JSON request to the /auth/access-token endpoint may cause the controller to restart (CWE-20).
UPDATE A
The CVSS score has been raised from 7.7 (CVSS:3.0:AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H) to 9.1 (CVSS:3.0:AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H)
Impact: An attacker could potentially script this request and create a denial of service attack condition.
Mitigation: Phoenix Contact recommends operating network-capable devices in closed networks or protected with a suitable firewall. For detailed information on our recommendations for measures to protect network-capable devices, please refer to our application note: Measures to protect network-capable devices with Ethernet connection
Remediation: Phoenix Contact recommends affected users to upgrade to the current Firmware 2021.0.5 LTS or higher which fixes this vulnerability.
| Article no | Article |
|------------|--------------------------------|
| 1151412 | AXC F 1152 |
| 2404267 | AXC F 2152 |
| 1069208 | AXC F 3152 |
| 1051328 | RFC 4072S |
| 1046568 | AXC F 2152 Starterkit |
| 1188165 | PLCnext Technology Starterkit |
7.5 (High)
Mitigation
Phoenix Contact recommends operating network-capable devices in closed networks or protected with a suitable firewall. For detailed information on our recommendations for measures to protect network-capable devices, please refer to our application note: Measures to protect network-capable devices with Ethernet connection
Vendor Fix
Phoenix Contact recommends affected users to upgrade to the current Firmware 2021.0.5 LTS or higher which fixes this vulnerability.
| Article no | Article |
|------------|--------------------------------|
| 1151412 | AXC F 1152 |
| 2404267 | AXC F 2152 |
| 1069208 | AXC F 3152 |
| 1051328 | RFC 4072S |
| 1046568 | AXC F 2152 Starterkit |
| 1188165 | PLCnext Technology Starterkit |
Affected products
Known affected
6 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: CSAFPID-31001 | — | ||
| Unresolved product id: CSAFPID-31002 | — | ||
| Unresolved product id: CSAFPID-31003 | — | ||
| Unresolved product id: CSAFPID-31004 | — | ||
| Unresolved product id: CSAFPID-31005 | — | ||
| Unresolved product id: CSAFPID-31006 | — |
Fixed
6 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: CSAFPID-32001 | — | ||
| Unresolved product id: CSAFPID-32002 | — | ||
| Unresolved product id: CSAFPID-32003 | — | ||
| Unresolved product id: CSAFPID-32004 | — | ||
| Unresolved product id: CSAFPID-32005 | — | ||
| Unresolved product id: CSAFPID-32006 | — |
References
3 references
Acknowledgments
{
"document": {
"acknowledgments": [
{
"organization": "CERT@VDE",
"summary": "coordination",
"urls": [
"https://certvde.com"
]
},
{
"names": [
"Oliver Carrigan"
],
"organization": "Dionach",
"summary": "discovered",
"urls": [
"https://www.nozominetworks.com"
]
}
],
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"distribution": {
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/v1/"
}
},
"lang": "en-GB",
"notes": [
{
"category": "summary",
"text": "A device on the same network as the controller sending a special crafted JSON request to the /auth/access-token endpoint may cause the controller to restart (CWE-20).\n\nUPDATE A\n\nThe CVSS score has been raised from 7.7 (CVSS:3.0:AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H) to 9.1 (CVSS:3.0:AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H)",
"title": "Summary"
},
{
"category": "description",
"text": "An attacker could potentially script this request and create a denial of service attack condition.",
"title": "Impact"
},
{
"category": "description",
"text": "Phoenix Contact recommends operating network-capable devices in closed networks or protected with a suitable firewall. For detailed information on our recommendations for measures to protect network-capable devices, please refer to our application note: Measures to protect network-capable devices with Ethernet connection",
"title": "Mitigation"
},
{
"category": "description",
"text": "Phoenix Contact recommends affected users to upgrade to the current Firmware 2021.0.5 LTS or higher which fixes this vulnerability.\n\n| Article no | Article |\n|------------|--------------------------------|\n| 1151412 | AXC F 1152 |\n| 2404267 | AXC F 2152 |\n| 1069208 | AXC F 3152 |\n| 1051328 | RFC 4072S |\n| 1046568 | AXC F 2152 Starterkit |\n| 1188165 | PLCnext Technology Starterkit |\n",
"title": "Remediation"
}
],
"publisher": {
"category": "vendor",
"contact_details": "psirt@phoenixcontact.com",
"name": "Phoenix Contact GmbH \u0026 Co. KG",
"namespace": "https://phoenixcontact.com/psirt"
},
"references": [
{
"category": "self",
"summary": "VDE-2021-029: PHOENIX CONTACT: DoS for PLCnext Control devices in versions \u003c2021.0.5 LTS - HTML",
"url": "https://certvde.com/en/advisories/VDE-2021-029"
},
{
"category": "external",
"summary": "CERT@VDE Security Advisories for PHOENIX CONTACT",
"url": "https://certvde.com/de/advisories/vendor/phoenixcontact/"
},
{
"category": "self",
"summary": "VDE-2021-029: PHOENIX CONTACT: DoS for PLCnext Control devices in versions \u003c2021.0.5 LTS - CSAF",
"url": "https://phoenixcontact.csaf-tp.certvde.com/.well-known/csaf/white/2021/vde-2021-029.json"
}
],
"title": "PHOENIX CONTACT: DoS for PLCnext Control devices in versions \u003c2021.0.5 LTS",
"tracking": {
"aliases": [
"VDE-2021-029"
],
"current_release_date": "2025-05-14T12:28:19.000Z",
"generator": {
"date": "2025-02-10T09:26:16.859Z",
"engine": {
"name": "Secvisogram",
"version": "2.5.18"
}
},
"id": "VDE-2021-029",
"initial_release_date": "2021-08-04T07:58:00.000Z",
"revision_history": [
{
"date": "2021-08-04T07:58:00.000Z",
"number": "1",
"summary": "initial revision"
},
{
"date": "2021-11-09T12:49:00.000Z",
"number": "2",
"summary": "Update A"
},
{
"date": "2025-02-10T09:30:00.000Z",
"number": "3",
"summary": "Update: Provider data has been corrected"
},
{
"date": "2025-05-14T12:28:19.000Z",
"number": "4",
"summary": "Fix: version space"
}
],
"status": "final",
"version": "4"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "AXC F 1152",
"product": {
"name": "AXC F 1152",
"product_id": "CSAFPID-11001",
"product_identification_helper": {
"model_numbers": [
"1151412"
]
}
}
},
{
"category": "product_name",
"name": "AXC F 2152",
"product": {
"name": "AXC F 2152",
"product_id": "CSAFPID-11002",
"product_identification_helper": {
"model_numbers": [
"2404267"
]
}
}
},
{
"category": "product_name",
"name": "AXC F 2152 Starterkit",
"product": {
"name": "AXC F 2152 Starterkit",
"product_id": "CSAFPID-11003",
"product_identification_helper": {
"model_numbers": [
"1046568"
]
}
}
},
{
"category": "product_name",
"name": "AXC F 3152",
"product": {
"name": "AXC F 3152",
"product_id": "CSAFPID-11004",
"product_identification_helper": {
"model_numbers": [
"1069208"
]
}
}
},
{
"category": "product_name",
"name": "PLCnext Technology Starterkit",
"product": {
"name": "PLCnext Technology Starterkit",
"product_id": "CSAFPID-11005",
"product_identification_helper": {
"model_numbers": [
"1188165"
]
}
}
},
{
"category": "product_name",
"name": "RFC 4072S",
"product": {
"name": "RFC 4072S",
"product_id": "CSAFPID-11006",
"product_identification_helper": {
"model_numbers": [
"1051328"
]
}
}
}
],
"category": "product_family",
"name": "Hardware"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c2021.0.5 LTS",
"product": {
"name": "Firmware \u003c2021.0.5 LTS",
"product_id": "CSAFPID-21001"
}
},
{
"category": "product_version",
"name": "2021.0.5 LTS",
"product": {
"name": "Firmware 2021.0.5 LTS",
"product_id": "CSAFPID-22001"
}
}
],
"category": "product_family",
"name": "Firmware"
}
],
"category": "vendor",
"name": "PHOENIX CONTACT"
}
],
"product_groups": [
{
"group_id": "CSAFGID-0001",
"product_ids": [
"CSAFPID-31001",
"CSAFPID-31002",
"CSAFPID-31003",
"CSAFPID-31004",
"CSAFPID-31005",
"CSAFPID-31006"
],
"summary": "Affected products."
},
{
"group_id": "CSAFGID-0002",
"product_ids": [
"CSAFPID-32001",
"CSAFPID-32002",
"CSAFPID-32003",
"CSAFPID-32004",
"CSAFPID-32005",
"CSAFPID-32006"
],
"summary": "Fixed products"
}
],
"relationships": [
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware \u003c2021.0.5 LTS installed on AXC F 1152",
"product_id": "CSAFPID-31001"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11001"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware \u003c2021.0.5 LTS installed on AXC F 2152",
"product_id": "CSAFPID-31002"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11002"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware \u003c2021.0.5 LTS installed on AXC F 2152 Starterkit",
"product_id": "CSAFPID-31003"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11003"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware \u003c2021.0.5 LTS installed on AXC F 3152",
"product_id": "CSAFPID-31004"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11004"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware \u003c2021.0.5 LTS installed on PLCnext Technology Starterkit",
"product_id": "CSAFPID-31005"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11005"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware \u003c2021.0.5 LTS installed on RFC 4072S",
"product_id": "CSAFPID-31006"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11006"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware 2021.0.5 LTS installed on AXC F 1152",
"product_id": "CSAFPID-32001"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11001"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware 2021.0.5 LTS installed on AXC F 2152",
"product_id": "CSAFPID-32002"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11002"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware 2021.0.5 LTS installed on AXC F 3152",
"product_id": "CSAFPID-32003"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11004"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware 2021.0.5 LTS installed on RFC 4072S",
"product_id": "CSAFPID-32004"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11006"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware 2021.0.5 LTS installed on AXC F 2152 Starterkit",
"product_id": "CSAFPID-32005"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11003"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware 2021.0.5 LTS installed on PLCnext Technology Starterkit",
"product_id": "CSAFPID-32006"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11005"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2021-34570",
"cwe": {
"id": "CWE-20",
"name": "Improper Input Validation"
},
"notes": [
{
"category": "summary",
"text": "Multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS are prone to a DoS attack through special crafted JSON requests.",
"title": "Summary"
}
],
"product_status": {
"fixed": [
"CSAFPID-32001",
"CSAFPID-32002",
"CSAFPID-32003",
"CSAFPID-32004",
"CSAFPID-32005",
"CSAFPID-32006"
],
"known_affected": [
"CSAFPID-31001",
"CSAFPID-31002",
"CSAFPID-31003",
"CSAFPID-31004",
"CSAFPID-31005",
"CSAFPID-31006"
]
},
"remediations": [
{
"category": "mitigation",
"details": "Phoenix Contact recommends operating network-capable devices in closed networks or protected with a suitable firewall. For detailed information on our recommendations for measures to protect network-capable devices, please refer to our application note: Measures to protect network-capable devices with Ethernet connection",
"group_ids": [
"CSAFGID-0001"
]
},
{
"category": "vendor_fix",
"details": "Phoenix Contact recommends affected users to upgrade to the current Firmware 2021.0.5 LTS or higher which fixes this vulnerability.\n\n| Article no | Article |\n|------------|--------------------------------|\n| 1151412 | AXC F 1152 |\n| 2404267 | AXC F 2152 |\n| 1069208 | AXC F 3152 |\n| 1051328 | RFC 4072S |\n| 1046568 | AXC F 2152 Starterkit |\n| 1188165 | PLCnext Technology Starterkit |",
"group_ids": [
"CSAFGID-0001"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"environmentalScore": 7.5,
"environmentalSeverity": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"temporalScore": 7.5,
"temporalSeverity": "HIGH",
"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"
},
"products": [
"CSAFPID-31001",
"CSAFPID-31002",
"CSAFPID-31003",
"CSAFPID-31004",
"CSAFPID-31005",
"CSAFPID-31006"
]
}
],
"title": "CVE-2021-34570"
}
]
}
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