{
  "id": "CVE-2021-43105",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2022-03-28T23:15:07.717",
  "lastModified": "2022-04-05T15:06:29.433",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the bailiwick checking function in Technitium DNS Server <= v7.0 exists that allows specific malicious users to inject `NS` records of any domain (even TLDs) into the cache and conduct a DNS cache poisoning attack."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad en la funci\u00f3n bailiwick checking en Technitium DNS Server versiones anteriores a v7.0 incluy\u00e9ndola, que permite a usuarios maliciosos espec\u00edficos inyectar registros \"NS\" de cualquier dominio (incluso TLD) en el cach\u00e9 y conducir un ataque de envenenamiento de cach\u00e9 de DNS"
    }
  ],
  "metrics": {
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        "type": "Primary",
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          "version": "3.1",
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          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4
      }
    ],
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        "type": "Primary",
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          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "SINGLE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "NONE",
          "baseScore": 4.0
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 8.0,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:technitium:dns_server:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "7.0",
              "matchCriteriaId": "7B8FF9ED-FF02-4489-8FEA-969F0F83CC65"
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  "references": [
    {
      "url": "https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md",
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
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    }
  ]
}