ubuntu-cve-2018-10920
Vulnerability from osv_ubuntu
Published
2018-08-02 13:29
Modified
2026-04-22 07:38
Summary
Details

Improper input validation bug in DNS resolver component of Knot Resolver before 2.4.1 allows remote attacker to poison cache.

Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "knot-resolver",
            "binary_version": "1.0.0~beta3-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "knot-resolver",
        "purl": "pkg:deb/ubuntu/knot-resolver@1.0.0~beta3-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.0~beta2-123-g6134920-1",
        "1.0.0~beta3-1",
        "1.0.0~beta3-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "knot-resolver",
            "binary_version": "2.1.1-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "knot-resolver-module-http",
            "binary_version": "2.1.1-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "libkres6",
            "binary_version": "2.1.1-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "knot-resolver",
        "purl": "pkg:deb/ubuntu/knot-resolver@2.1.1-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.3-1",
        "1.5.0-4",
        "1.5.1-1",
        "1.5.2-1",
        "2.0.0-3",
        "2.1.0-1",
        "2.1.0-2",
        "2.1.1-1",
        "2.1.1-1ubuntu0.1~esm2"
      ]
    }
  ],
  "aliases": [],
  "details": "Improper input validation bug in DNS resolver component of Knot Resolver before 2.4.1 allows remote attacker to poison cache.",
  "id": "UBUNTU-CVE-2018-10920",
  "modified": "2026-04-22T07:38:37Z",
  "published": "2018-08-02T13:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-10920"
    },
    {
      "type": "REPORT",
      "url": "https://www.knot-resolver.cz/2018-08-02-knot-resolver-2.4.1.html"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10920"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2018-10920"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2018-10920"
  ]
}



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