cvelist/2021/31xxx/CVE-2021-31372.json

{
    "CVE_data_meta": {
        "ASSIGNER": "sirt@juniper.net",
        "DATE_PUBLIC": "2021-10-13T16:00:00.000Z",
        "ID": "CVE-2021-31372",
        "STATE": "PUBLIC",
        "TITLE": "Junos OS: J-Web allows a locally authenticated attacker to escalate their privileges to root. "
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Junos OS",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_value": "18.3R3-S5"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "18.4",
                                            "version_value": "18.4R3-S9"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "19.1",
                                            "version_value": "19.1R3-S6"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "19.2",
                                            "version_value": "19.2R3-S3"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "19.3",
                                            "version_value": "19.3R3-S3"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "19.4",
                                            "version_value": "19.4R3-S5"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "20.1",
                                            "version_value": "20.1R3-S1"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "20.2",
                                            "version_value": "20.2R3-S2"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "20.3",
                                            "version_value": "20.3R3-S1"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "20.4",
                                            "version_value": "20.4R3"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "21.1",
                                            "version_value": "21.1R2, 21.1R3"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "21.2",
                                            "version_value": "21.2R1-S1, 21.2R2"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "Juniper Networks"
                }
            ]
        }
    },
    "configuration": [
        {
            "lang": "eng",
            "value": "The examples of the config stanza affected by this issue:\n\n  [system services web-management]\n  [system services web-management https]\n"
        }
    ],
    "credit": [
        {
            "lang": "eng",
            "value": "Andy Coles of Microsoft MSRC Vulnerabilities and Mitigations Team"
        }
    ],
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "An Improper Input Validation vulnerability in J-Web of Juniper Networks Junos OS allows a locally authenticated J-Web attacker to escalate their privileges to root over the target device. This issue affects: Juniper Networks Junos OS All versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R3-S3; 19.3 versions prior to 19.3R3-S3; 19.4 versions prior to 19.4R3-S5; 20.1 versions prior to 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3-S1; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2, 21.1R3; 21.2 versions prior to 21.2R1-S1, 21.2R2;"
            }
        ]
    },
    "exploit": [
        {
            "lang": "eng",
            "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
        }
    ],
    "generator": {
        "engine": "Vulnogram 0.0.9"
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-20 Improper Input Validation"
                    }
                ]
            },
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Privilege Escalation"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://kb.juniper.net/JSA11237",
                "refsource": "CONFIRM",
                "url": "https://kb.juniper.net/JSA11237"
            }
        ]
    },
    "solution": [
        {
            "lang": "eng",
            "value": "The following software releases have been updated to resolve this specific issue: 18.3R3-S5, 18.4R3-S9, 19.1R3-S6, 19.2R3-S3, 19.3R3-S3, 19.4R3-S5, 20.1R3-S1, 20.2R3-S2, 20.3R3-S1, 20.4R3, 21.1R2, 21.1R3, 21.2R1-S1, 21.2R2, 21.3R1, and all subsequent releases.\n"
        }
    ],
    "source": {
        "advisory": "JSA11237",
        "defect": [
            "1594516"
        ],
        "discovery": "EXTERNAL"
    },
    "work_around": [
        {
            "lang": "eng",
            "value": "To reduce the risk of exploitation of this issue, use access lists or firewall filters to limit access to only trusted administrative networks, hosts and users.\n\nAlternatively, J-Web can be disabled."
        }
    ]
}