cvelist/2021/34xxx/CVE-2021-34578.json

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{
"CVE_data_meta": {
"ASSIGNER": "info@cert.vde.com",
"DATE_PUBLIC": "2021-08-31T07:00:00.000Z",
"ID": "CVE-2021-34578",
"STATE": "PUBLIC",
"TITLE": "WAGO: Authentication Vulnerability in Web-Based Management"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "PLC",
"version": {
"version_data": [
{
"version_affected": "<=",
"version_name": "750-362",
"version_value": "FW07"
},
{
"version_affected": "<=",
"version_name": "750-363",
"version_value": "FW07"
},
{
"version_affected": "<=",
"version_name": "750-823",
"version_value": "FW07"
},
{
"version_affected": "<=",
"version_name": "750-832/xxx-xxx",
"version_value": "FW07"
},
{
"version_affected": "<=",
"version_name": "750-862",
"version_value": "FW07"
},
{
"version_affected": "<=",
"version_name": "750-891",
"version_value": "FW07"
},
{
"version_affected": "<=",
"version_name": "750-890/xxx-xxx",
"version_value": "FW07"
},
{
"version_affected": "<=",
"version_name": "750-893",
"version_value": "FW07"
}
]
}
}
]
},
"vendor_name": "WAGO"
}
]
}
},
"credit": [
{
"lang": "eng",
"value": "Maxim Rupp (https://rupp.it) reported this vulnerability to WAGO. CERT@VDE coordinated."
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "This vulnerability allows an attacker who has access to the WBM to read and write settings-parameters of the device by sending specifically constructed requests without authentication on multiple WAGO PLCs in firmware versions up to FW07."
}
]
},
"generator": {
"engine": "Vulnogram 0.0.9"
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-287 Improper Authentication"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://cert.vde.com/en-us/advisories/vde-2020-044",
"refsource": "CONFIRM",
"url": "https://cert.vde.com/en-us/advisories/vde-2020-044"
}
]
},
"solution": [
{
"lang": "eng",
"value": "Update the device to the latest FW version."
}
],
"source": {
"advisory": "VDE-2020-044",
"discovery": "EXTERNAL"
},
"work_around": [
{
"lang": "eng",
"value": "Restrict network access to the device.\nDo not directly connect the device to the internet.\nDisable unused TCP/UDP ports.\nDisable web-based management ports 80/443 after the configuration phase"
}
]
}