cvelist/2021/27xxx/CVE-2021-27420.json

{
    "CVE_data_meta": {
        "ASSIGNER": "ics-cert@hq.dhs.gov",
        "ID": "CVE-2021-27420",
        "STATE": "PUBLIC",
        "TITLE": "GE UR family input validation"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "UR family",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_value": "8.1x"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "GE"
                }
            ]
        }
    },
    "credit": [
        {
            "lang": "eng",
            "value": "SCADA-X, DOE\u2019s Cyber Testing for Resilient Industrial Control Systems (CyTRICS) program, Verve Industrial, and VuMetric reported these vulnerabilities to GE."
        }
    ],
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "GE UR firmware versions prior to version 8.1x web server task does not properly handle receipt of unsupported HTTP verbs, resulting in the web server becoming temporarily unresponsive after receiving a series of unsupported HTTP requests. When unresponsive, the web server is inaccessible. By itself, this is not particularly significant as the relay remains effective in all other functionality and communication channels."
            }
        ]
    },
    "generator": {
        "engine": "Vulnogram 0.0.9"
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "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:L",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-20 Improper Input Validation"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-075-02",
                "refsource": "CONFIRM",
                "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-075-02"
            },
            {
                "name": "https://www.gegridsolutions.com/Passport/Login.aspx",
                "refsource": "CONFIRM",
                "url": "https://www.gegridsolutions.com/Passport/Login.aspx"
            }
        ]
    },
    "solution": [
        {
            "lang": "eng",
            "value": "GE strongly recommends users with impacted firmware versions update their UR devices to UR firmware Version 8.10, or greater to resolve these vulnerabilities. GE provides additional mitigations and information about these vulnerabilities in GE Publication Number: GES-2021-004 (login required)."
        }
    ],
    "source": {
        "discovery": "EXTERNAL"
    },
    "work_around": [
        {
            "lang": "eng",
            "value": "GE recommends protecting UR IED by using network defense-in-depth practices. This includes, but is not limited to, placing UR IED inside the control system network security perimeter, and having access controls, monitoring (such as an Intrusion Detection System), and other mitigating technologies in place. \n\nGE recommends users refer to the UR Deployment guide for secure configuration of UR IED and system."
        }
    ]
}