{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "state": "PUBLISHED",
        "cveId": "CVE-2020-12667",
        "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "assignerShortName": "mitre",
        "dateUpdated": "2024-08-04T12:04:22.538Z",
        "dateReserved": "2020-05-05T00:00:00",
        "datePublished": "2020-05-19T00:00:00"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
                "shortName": "mitre",
                "dateUpdated": "2024-04-26T07:06:02.945535"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Knot Resolver before 5.1.1 allows traffic amplification via a crafted DNS answer from an attacker-controlled server, aka an \"NXNSAttack\" issue. This is triggered by random subdomains in the NSDNAME in NS records."
                }
            ],
            "affected": [
                {
                    "vendor": "n/a",
                    "product": "n/a",
                    "versions": [
                        {
                            "version": "n/a",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://en.blog.nic.cz/2020/05/19/nxnsattack-upgrade-resolvers-to-stop-new-kind-of-random-subdomain-attack/"
                },
                {
                    "url": "https://www.knot-resolver.cz/2020-05-19-knot-resolver-5.1.1.html"
                },
                {
                    "name": "[oss-security] 20200519 [CVE-2020-12667] Knot Resolver 5.1.1 NXNSAttack mitigation",
                    "tags": [
                        "mailing-list"
                    ],
                    "url": "http://www.openwall.com/lists/oss-security/2020/05/19/2"
                },
                {
                    "url": "http://cyber-security-group.cs.tau.ac.il/#"
                },
                {
                    "name": "FEDORA-2020-bf68101ad3",
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/76Y4FITMOH6RVPWAANGV7NB2ZHPJJGDQ/"
                },
                {
                    "name": "[debian-lts-announce] 20240426 [SECURITY] [DLA 3795-1] knot-resolver security update",
                    "tags": [
                        "mailing-list"
                    ],
                    "url": "https://lists.debian.org/debian-lts-announce/2024/04/msg00017.html"
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "type": "text",
                            "lang": "en",
                            "description": "n/a"
                        }
                    ]
                }
            ],
            "datePublic": "2020-05-19T00:00:00"
        },
        "adp": [
            {
                "title": "CISA ADP Vulnrichment",
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 7.5,
                            "attackVector": "NETWORK",
                            "baseSeverity": "HIGH",
                            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                            "integrityImpact": "NONE",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "NONE"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2020-12667",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2024-04-26T17:02:23.525566Z"
                            }
                        }
                    }
                ],
                "affected": [
                    {
                        "cpes": [
                            "cpe:2.3:a:nic:knot_resolver:-:*:*:*:*:*:*:*"
                        ],
                        "vendor": "nic",
                        "product": "knot_resolver",
                        "versions": [
                            {
                                "status": "affected",
                                "version": "-"
                            }
                        ],
                        "defaultStatus": "unknown"
                    }
                ],
                "problemTypes": [
                    {
                        "descriptions": [
                            {
                                "lang": "en",
                                "type": "CWE",
                                "cweId": "CWE-400",
                                "description": "CWE-400 Uncontrolled Resource Consumption"
                            }
                        ]
                    }
                ],
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-06-04T17:12:29.314Z"
                }
            },
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-04T12:04:22.538Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://en.blog.nic.cz/2020/05/19/nxnsattack-upgrade-resolvers-to-stop-new-kind-of-random-subdomain-attack/",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://www.knot-resolver.cz/2020-05-19-knot-resolver-5.1.1.html",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "name": "[oss-security] 20200519 [CVE-2020-12667] Knot Resolver 5.1.1 NXNSAttack mitigation",
                        "tags": [
                            "mailing-list",
                            "x_transferred"
                        ],
                        "url": "http://www.openwall.com/lists/oss-security/2020/05/19/2"
                    },
                    {
                        "url": "http://cyber-security-group.cs.tau.ac.il/#",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "name": "FEDORA-2020-bf68101ad3",
                        "tags": [
                            "vendor-advisory",
                            "x_transferred"
                        ],
                        "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/76Y4FITMOH6RVPWAANGV7NB2ZHPJJGDQ/"
                    },
                    {
                        "name": "[debian-lts-announce] 20240426 [SECURITY] [DLA 3795-1] knot-resolver security update",
                        "tags": [
                            "mailing-list",
                            "x_transferred"
                        ],
                        "url": "https://lists.debian.org/debian-lts-announce/2024/04/msg00017.html"
                    }
                ]
            }
        ]
    }
}