vde-2021-049
HIGH CVSS 7.5 csaf_wagogmbhcokg
Description
A Denial-of-Service Vulnerability was reported in CODESYS 2.3 Runtime. The CODESYS 2.3 Runtime is an essential component in several WAGO PLC's. All vulnerable PLCs are listed in chapter 'Affected Products'.
Timeline
- Published
- 2021-11-16 12:05 UTC
- Last Modified
- 2025-05-22
CVSS Details
CVSS details not available.
Affected Products
No product information available.
Weaknesses (CWE)
References
No references available.
Linked Vulnerabilities
No linked vulnerabilities found.
{
"document": {
"acknowledgments": [
{
"organization": "CERTVDE",
"summary": "coordination",
"urls": [
"https://certvde.com"
]
},
{
"names": [
"Steffen Robertz and Gerhard Hechenberger"
],
"organization": "SEC Consult Vulnerability Lab.",
"summary": "reporting"
}
],
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"distribution": {
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "en-GB",
"notes": [
{
"category": "summary",
"text": "A Denial-of-Service Vulnerability was reported in CODESYS 2.3 Runtime. The CODESYS 2.3 Runtime is an essential component in several WAGO PLC's. All vulnerable PLCs are listed in chapter 'Affected Products'.",
"title": "Summary"
},
{
"category": "description",
"text": "The reported vulnerabilities allow an attacker who has access to the device and is able to exploit the vulnerability, to manipulate and disrupt the CODESYS 2.3 Runtime of the device.",
"title": "Impact"
},
{
"category": "description",
"text": "1. Use general security best practices to protect systems from local and network attacks. \n 2. Do not allow direct access to the device from untrusted networks. \n 3. Update to the latest firmware according to the table in chapter solutions. \n 4. Disable the CODESYS 2.3 port 2455. ",
"title": "Mitigation"
}
],
"publisher": {
"category": "vendor",
"contact_details": "psirt@wago.com",
"name": "WAGO GmbH & Co. KG",
"namespace": "https://www.wago.com/psirt"
},
"references": [
{
"category": "external",
"summary": "CERT@VDE Security Advisories for WAGO",
"url": "https://certvde.com/en/advisories/vendor/wago/"
},
{
"category": "self",
"summary": "VDE-2021-049: WAGO: Denial of Service Vulnerability in CODESYS Runtime 2.3 - HTML",
"url": "https://certvde.com/de/advisories/VDE-2020-015/"
},
{
"category": "self",
"summary": "VDE-2021-049: WAGO: Denial of Service Vulnerability in CODESYS Runtime 2.3 - CSAF",
"url": "https://wago.csaf-tp.certvde.com/.well-known/csaf/white/2021/vde-2021-049.json"
}
],
"title": "WAGO: Denial of Service Vulnerability in CODESYS Runtime 2.3",
"tracking": {
"aliases": [
"VDE-2021-049"
],
"current_release_date": "2025-05-22T13:03:10.000Z",
"generator": {
"date": "2025-02-25T09:30:03.350Z",
"engine": {
"name": "Secvisogram",
"version": "2.5.18"
}
},
"id": "VDE-2021-049",
"initial_release_date": "2021-11-16T12:05:00.000Z",
"revision_history": [
{
"date": "2021-11-16T12:05:00.000Z",
"number": "1",
"summary": "initial revision"
},
{
"date": "2025-05-22T13:03:10.000Z",
"number": "2",
"summary": "Fix: version space, added distribution, quotation mark"
}
],
"status": "final",
"version": "2"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "750-8202/xxx-xxx",
"product": {
"name": "750-8202/xxx-xxx",
"product_id": "CSAFPID-11001"
}
},
{
"category": "product_name",
"name": "750-8203/xxx-xxx",
"product": {
"name": "750-8203/xxx-xxx",
"product_id": "CSAFPID-11002"
}
},
{
"category": "product_name",
"name": "750-8204/xxx-xxx",
"product": {
"name": "750-8204/xxx-xxx",
"product_id": "CSAFPID-11003"
}
},
{
"category": "product_name",
"name": "750-8206/xxx-xxx",
"product": {
"name": "750-8206/xxx-xxx",
"product_id": "CSAFPID-11004"
}
},
{
"category": "product_name",
"name": "750-8207/xxx-xxx",
"product": {
"name": "750-8207/xxx-xxx",
"product_id": "CSAFPID-11005"
}
},
{
"category": "product_name",
"name": "750-8208/xxx-xxx",
"product": {
"name": "750-8208/xxx-xxx",
"product_id": "CSAFPID-11006"
}
},
{
"category": "product_name",
"name": "750-8210/xxx-xxx",
"product": {
"name": "750-8210/xxx-xxx",
"product_id": "CSAFPID-11007"
}
},
{
"category": "product_name",
"name": "750-8211/xxx-xxx",
"product": {
"name": "750-8211/xxx-xxx",
"product_id": "CSAFPID-11008"
}
},
{
"category": "product_name",
"name": "750-8212/xxx-xxx",
"product": {
"name": "750-8212/xxx-xxx",
"product_id": "CSAFPID-11009"
}
},
{
"category": "product_name",
"name": "750-8213/xxx-xxx",
"product": {
"name": "750-8213/xxx-xxx",
"product_id": "CSAFPID-11010"
}
},
{
"category": "product_name",
"name": "750-8214/xxx-xxx",
"product": {
"name": "750-8214/xxx-xxx",
"product_id": "CSAFPID-11011"
}
},
{
"category": "product_name",
"name": "750-8216/xxx-xxx",
"product": {
"name": "750-8216/xxx-xxx",
"product_id": "CSAFPID-11012"
}
},
{
"category": "product_name",
"name": "750-8217/xxx-xxx",
"product": {
"name": "750-8217/xxx-xxx",
"product_id": "CSAFPID-11013"
}
}
],
"category": "product_family",
"name": "Hardware"
},
{
"branches": [
{
"category": "product_version_range",
"name": "<=FW19",
"product": {
"name": "Firmware <=FW19",
"product_id": "CSAFPID-21001"
}
},
{
"category": "product_version",
"name": "FW20",
"product": {
"name": "Firmware FW20",
"product_id": "CSAFPID-22001"
}
}
],
"category": "product_family",
"name": "Firmware"
}
],
"category": "vendor",
"name": "WAGO GmbH & Co. KG"
}
],
"product_groups": [
{
"group_id": "CSAFGID-0001",
"product_ids": [
"CSAFPID-31001",
"CSAFPID-31002",
"CSAFPID-31003",
"CSAFPID-31004",
"CSAFPID-31005",
"CSAFPID-31006",
"CSAFPID-31007",
"CSAFPID-31008",
"CSAFPID-31009",
"CSAFPID-31010",
"CSAFPID-31011",
"CSAFPID-31012",
"CSAFPID-31013"
],
"summary": "Affected Products"
},
{
"group_id": "CSAFGID-0002",
"product_ids": [
"CSAFPID-32001",
"CSAFPID-32002",
"CSAFPID-32003",
"CSAFPID-32004",
"CSAFPID-32005",
"CSAFPID-32006",
"CSAFPID-32007",
"CSAFPID-32008",
"CSAFPID-32009",
"CSAFPID-32010",
"CSAFPID-32011",
"CSAFPID-32012",
"CSAFPID-32013"
],
"summary": "Fixed Products"
}
],
"relationships": [
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware <=FW19 installed on 750-8202/xxx-xxx",
"product_id": "CSAFPID-31001"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11001"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware FW20 installed on 750-8202/xxx-xxx",
"product_id": "CSAFPID-32001"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11001"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware <=FW19 installed on 750-8203/xxx-xxx",
"product_id": "CSAFPID-31002"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11002"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware FW20 installed on 750-8203/xxx-xxx",
"product_id": "CSAFPID-32002"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11002"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware <=FW19 installed on 750-8204/xxx-xxx",
"product_id": "CSAFPID-31003"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11003"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware FW20 installed on 750-8204/xxx-xxx",
"product_id": "CSAFPID-32003"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11003"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware <=FW19 installed on 750-8206/xxx-xxx",
"product_id": "CSAFPID-31004"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11004"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware FW20 installed on 750-8206/xxx-xxx",
"product_id": "CSAFPID-32004"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11004"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware <=FW19 installed on 750-8207/xxx-xxx",
"product_id": "CSAFPID-31005"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11005"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware FW20 installed on 750-8207/xxx-xxx",
"product_id": "CSAFPID-32005"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11005"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware <=FW19 installed on 750-8208/xxx-xxx",
"product_id": "CSAFPID-31006"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11006"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware FW20 installed on 750-8208/xxx-xxx",
"product_id": "CSAFPID-32006"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11006"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware <=FW19 installed on 750-8210/xxx-xxx",
"product_id": "CSAFPID-31007"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11007"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware FW20 installed on 750-8210/xxx-xxx",
"product_id": "CSAFPID-32007"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11007"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware <=FW19 installed on 750-8211/xxx-xxx",
"product_id": "CSAFPID-31008"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11008"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware FW20 installed on 750-8211/xxx-xxx",
"product_id": "CSAFPID-32008"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11008"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware <=FW19 installed on 750-8212/xxx-xxx",
"product_id": "CSAFPID-31009"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11009"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware FW20 installed on 750-8212/xxx-xxx",
"product_id": "CSAFPID-32009"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11009"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware <=FW19 installed on 750-8213/xxx-xxx",
"product_id": "CSAFPID-31010"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11010"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware FW20 installed on 750-8213/xxx-xxx",
"product_id": "CSAFPID-32010"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11010"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware <=FW19 installed on 750-8214/xxx-xxx",
"product_id": "CSAFPID-31011"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11011"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware FW20 installed on 750-8214/xxx-xxx",
"product_id": "CSAFPID-32011"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11011"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware <=FW19 installed on 750-8216/xxx-xxx",
"product_id": "CSAFPID-31012"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11012"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware FW20 installed on 750-8216/xxx-xxx",
"product_id": "CSAFPID-32012"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11012"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware <=FW19 installed on 750-8217/xxx-xxx",
"product_id": "CSAFPID-31013"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11013"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware FW20 installed on 750-8217/xxx-xxx",
"product_id": "CSAFPID-32013"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11013"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2021-34593",
"cwe": {
"id": "CWE-755",
"name": "Improper Handling of Exceptional Conditions"
},
"notes": [
{
"category": "summary",
"text": "In CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56 unauthenticated crafted invalid requests may result in several denial-of-service conditions. Running PLC programs may be stopped, memory may be leaked, or further communication clients may be blocked from accessing the PLC."
}
],
"product_status": {
"fixed": [
"CSAFPID-32001",
"CSAFPID-32002",
"CSAFPID-32003",
"CSAFPID-32004",
"CSAFPID-32005",
"CSAFPID-32006",
"CSAFPID-32007",
"CSAFPID-32008",
"CSAFPID-32009",
"CSAFPID-32010",
"CSAFPID-32011",
"CSAFPID-32012",
"CSAFPID-32013"
],
"known_affected": [
"CSAFPID-31001",
"CSAFPID-31002",
"CSAFPID-31003",
"CSAFPID-31004",
"CSAFPID-31005",
"CSAFPID-31006",
"CSAFPID-31007",
"CSAFPID-31008",
"CSAFPID-31009",
"CSAFPID-31010",
"CSAFPID-31011",
"CSAFPID-31012",
"CSAFPID-31013"
]
},
"remediations": [
{
"category": "mitigation",
"details": "1. Use general security best practices to protect systems from local and network attacks. \n 2. Do not allow direct access to the device from untrusted networks. \n 3. Update to the latest firmware according to the table in chapter solutions. \n 4. Disable the CODESYS 2.3 port 2455.",
"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",
"CSAFPID-31007",
"CSAFPID-31008",
"CSAFPID-31009",
"CSAFPID-31010",
"CSAFPID-31011",
"CSAFPID-31012",
"CSAFPID-31013"
]
}
],
"title": "CVE-2021-34593"
}
]
}