FKIE_CVE-2020-8621

Vulnerability from fkie_nvd - Published: 2020-08-21 21:15 - Updated: 2024-11-21 05:39
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
In BIND 9.14.0 -> 9.16.5, 9.17.0 -> 9.17.3, If a server is configured with both QNAME minimization and 'forward first' then an attacker who can send queries to it may be able to trigger the condition that will cause the server to crash. Servers that 'forward only' are not affected.
References
security-officer@isc.orghttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.htmlMailing List, Third Party Advisory
security-officer@isc.orghttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.htmlMailing List, Third Party Advisory
security-officer@isc.orghttps://kb.isc.org/docs/cve-2020-8621Vendor Advisory
security-officer@isc.orghttps://security.gentoo.org/glsa/202008-19Third Party Advisory
security-officer@isc.orghttps://security.netapp.com/advisory/ntap-20200827-0003/Third Party Advisory
security-officer@isc.orghttps://usn.ubuntu.com/4468-1/Third Party Advisory
security-officer@isc.orghttps://www.synology.com/security/advisory/Synology_SA_20_19Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://kb.isc.org/docs/cve-2020-8621Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202008-19Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20200827-0003/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4468-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.synology.com/security/advisory/Synology_SA_20_19Third Party Advisory
Impacted products
Vendor Product Version
isc bind *
isc bind *
opensuse leap 15.1
opensuse leap 15.2
canonical ubuntu_linux 16.04
canonical ubuntu_linux 18.04
canonical ubuntu_linux 20.04
synology dns_server *
netapp steelstore_cloud_integrated_storage -
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In BIND 9.14.0 -\u003e 9.16.5, 9.17.0 -\u003e 9.17.3, If a server is configured with both QNAME minimization and \u0027forward first\u0027 then an attacker who can send queries to it may be able to trigger the condition that will cause the server to crash. Servers that \u0027forward only\u0027 are not affected."
    },
    {
      "lang": "es",
      "value": "En BIND versiones 9.14.0 -) 9.16.5, 9.17.0 -) 9.17.3, si un servidor est\u00e1 configurado con minimizaci\u00f3n de QNAME y \"forward first\", entonces un atacante que pueda enviarle consultas puede ser capaz de desencadenar la condici\u00f3n que causar\u00e1 que el servidor se bloquee. Los servidores con \"forward only\" no est\u00e1n afectados."
    }
  ],
  "id": "CVE-2020-8621",
  "lastModified": "2024-11-21T05:39:08.490",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.3,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
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          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
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        "type": "Secondary"
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          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "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:H",
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        "source": "nvd@nist.gov",
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  "published": "2020-08-21T21:15:12.167",
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  "vulnStatus": "Modified",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-617"
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      "source": "nvd@nist.gov",
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}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.