{
    "CVE_data_meta": {
        "ASSIGNER": "security-officer@isc.org",
        "DATE_PUBLIC": "2019-05-29T23:00:00.000Z",
        "ID": "CVE-2019-6469",
        "STATE": "PUBLIC",
        "TITLE": "BIND Supported Preview Edition can exit with an assertion failure if ECS is in use"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "BIND 9 Supported Preview Edition",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_name": "BIND 9",
                                            "version_value": "BIND 9.10.5-S1 -> 9.11.6-S1 of BIND 9 Supported Preview Edition."
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "ISC"
                }
            ]
        }
    },
    "credit": [
        {
            "lang": "eng",
            "value": "ISC would like to thank Quad9 for reporting this issue."
        }
    ],
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "An error in the EDNS Client Subnet (ECS) feature for recursive resolvers can cause BIND to exit with an assertion failure when processing a response that has malformed RRSIGs. Versions affected: BIND 9.10.5-S1 -> 9.11.6-S1 of BIND 9 Supported Preview Edition."
            }
        ]
    },
    "generator": {
        "engine": "Vulnogram 0.0.7"
    },
    "impact": {
        "cvss": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "An attacker who is able to cause a server to perform a query whose answer will be accompanied by malformed RRSIGs can deliberately cause a server to exit if it is using the recursive ECS feature."
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://kb.isc.org/docs/cve-2019-6469",
                "refsource": "CONFIRM",
                "url": "https://kb.isc.org/docs/cve-2019-6469"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://support.f5.com/csp/article/K39751401?utm_source=f5support&utm_medium=RSS",
                "url": "https://support.f5.com/csp/article/K39751401?utm_source=f5support&utm_medium=RSS"
            }
        ]
    },
    "solution": [
        {
            "lang": "eng",
            "value": "Upgrade to the patched release most closely related to your current version of BIND:\n\nBIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.\n\n>=    BIND 9.11.7-S1\n"
        }
    ],
    "source": {
        "discovery": "USER"
    },
    "work_around": [
        {
            "lang": "eng",
            "value": "Only servers which have enabled the EDNS Client Subnet (ECS) feature can be affected by this defect; it can be prevented by disabling ECS options in the server's configuration."
        }
    ]
}