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FKIE_CVE-2017-11104

Vulnerability from fkie_nvd - Published: 2017-07-08 10:29 - Updated: 2026-06-17 01:01
Severity
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Summary
Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol implementation that would allow an attacker with a valid key name and algorithm to bypass TSIG authentication if no additional ACL restrictions are set, because of an improper TSIG validity period check.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00076.htmlBroken Link
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00078.htmlBroken Link
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00089.htmlBroken Link
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-09/msg00049.htmlBroken Link
cve@mitre.orghttp://www.debian.org/security/2017/dsa-3910Third Party Advisory
cve@mitre.orghttp://www.securityfocus.com/bid/99598Broken Link
cve@mitre.orghttp://www.synacktiv.ninja/ressources/Knot_DNS_TSIG_Signature_Forgery.pdfExploit, Mitigation, Patch, Third Party Advisory
cve@mitre.orghttps://bugs.debian.org/865678Issue Tracking, Third Party Advisory
cve@mitre.orghttps://lists.nic.cz/pipermail/knot-dns-users/2017-June/001144.htmlBroken Link, Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00076.htmlBroken Link
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00078.htmlBroken Link
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00089.htmlBroken Link
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00049.htmlBroken Link
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2017/dsa-3910Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/99598Broken Link
af854a3a-2127-422b-91ae-364da2661108http://www.synacktiv.ninja/ressources/Knot_DNS_TSIG_Signature_Forgery.pdfExploit, Mitigation, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugs.debian.org/865678Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.nic.cz/pipermail/knot-dns-users/2017-June/001144.htmlBroken Link, Mailing List, Patch, Third Party Advisory
Impacted products
Vendor Product Version
knot-dns knot_dns *
knot-dns knot_dns 2.5.0
knot-dns knot_dns 2.5.1
debian debian_linux 8.0
debian debian_linux 9.0
debian debian_linux 10.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:knot-dns:knot_dns:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7F0CEBFD-11BC-40ED-935F-9E621F99A1CD",
              "versionEndIncluding": "2.4.4",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:knot-dns:knot_dns:2.5.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "56BBCEF1-0DF1-4A0A-8B43-EEBA203A7314",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:knot-dns:knot_dns:2.5.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "6362CB21-8799-4059-A816-B63064389D0B",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol implementation that would allow an attacker with a valid key name and algorithm to bypass TSIG authentication if no additional ACL restrictions are set, because of an improper TSIG validity period check."
    },
    {
      "lang": "es",
      "value": "Knot DNS anterior a versi\u00f3n 2.4.5 y versi\u00f3n 2.5.x anterior a 2.5.2, contiene un fallo dentro de la implementaci\u00f3n del protocolo TSIG que permitir\u00eda a un atacante con un nombre de clave v\u00e1lido y un algoritmo omitir la autenticaci\u00f3n TSIG si no se establecen restricciones ACL adicionales, debido a una comprobaci\u00f3n inapropiada del per\u00edodo de validez TSIG."
    }
  ],
  "id": "CVE-2017-11104",
  "lastModified": "2026-06-17T01:01:13.540",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  },
  "published": "2017-07-08T10:29:00.170",
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          "value": "CWE-20"
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      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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