usn-7047-1
Vulnerability from osv_ubuntu
Published
2024-10-01 06:53
Modified
2026-04-27 14:11
Summary
knot-resolver vulnerabilities
Details

Vladimír Čunát discovered that Knot Resolver incorrectly handled input during DNSSEC validation. A remote attacker could possibly use this issue to bypass certain validations. (CVE-2019-10190)

Vladimír Čunát discovered that Knot Resolver incorrectly handled input during DNSSEC validation. A remote attacker could possibly use this issue to downgrade DNSSEC-secure domains to a DNSSEC-insecure state, resulting in a domain hijacking attack. (CVE-2019-10191)

Vladimír Čunát discovered that Knot Resolver incorrectly handled certain DNS replies with many resource records. An attacker could possibly use this issue to consume system resources, resulting in a denial of service. (CVE-2019-19331)

Lior Shafir, Yehuda Afek, and Anat Bremler-Barr discovered that Knot Resolver incorrectly handled certain queries. A remote attacker could use this issue to perform an amplification attack directed at a target. (CVE-2020-12667)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2019-10190",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2019-10191",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2019-19331",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-12667",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "knot-resolver",
            "binary_version": "3.2.1-3ubuntu2.2"
          },
          {
            "binary_name": "knot-resolver-module-http",
            "binary_version": "3.2.1-3ubuntu2.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "knot-resolver",
        "purl": "pkg:deb/ubuntu/knot-resolver@3.2.1-3ubuntu2.2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.2.1-3ubuntu2.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.2.1-3",
        "3.2.1-3ubuntu1",
        "3.2.1-3ubuntu2",
        "3.2.1-3ubuntu2.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Vladim\u00edr \u010cun\u00e1t discovered that Knot Resolver incorrectly handled input\nduring DNSSEC validation. A remote attacker could possibly use this issue\nto bypass certain validations. (CVE-2019-10190)\n\nVladim\u00edr \u010cun\u00e1t discovered that Knot Resolver incorrectly handled input\nduring DNSSEC validation. A remote attacker could possibly use this issue\nto downgrade DNSSEC-secure domains to a DNSSEC-insecure state, resulting \nin a domain hijacking attack. (CVE-2019-10191)\n\nVladim\u00edr \u010cun\u00e1t discovered that Knot Resolver incorrectly handled certain \nDNS replies with many resource records. An attacker could possibly use \nthis issue to consume system resources, resulting in a denial of service.\n(CVE-2019-19331)\n\nLior Shafir, Yehuda Afek, and Anat Bremler-Barr discovered that Knot\nResolver incorrectly handled certain queries. A remote attacker could \nuse this issue to perform an amplification attack directed at a target.\n(CVE-2020-12667)\n",
  "id": "USN-7047-1",
  "modified": "2026-04-27T14:11:37Z",
  "published": "2024-10-01T06:53:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7047-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-10190"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-10191"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-19331"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-12667"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "knot-resolver vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2019-10190",
    "UBUNTU-CVE-2019-10191",
    "UBUNTU-CVE-2019-19331",
    "UBUNTU-CVE-2020-12667"
  ]
}



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