vuln-ubuntu/data/osv/usn/USN-6665-1.json

{
  "schema_version": "1.7.0",
  "id": "USN-6665-1",
  "summary": "unbound vulnerabilities",
  "details": "Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered\nthat Unbound incorrectly handled validating DNSSEC messages. A remote\nattacker could possibly use this issue to cause Unbound to consume\nresources, leading to a denial of service. (CVE-2023-50387)\n\nIt was discovered that Unbound incorrectly handled preparing an NSEC3\nclosest encloser proof. A remote attacker could possibly use this issue to\ncause Unbound to consume resources, leading to a denial of service.\n(CVE-2023-50868)\n",
  "aliases": [],
  "upstream": [
    "UBUNTU-CVE-2023-50387",
    "UBUNTU-CVE-2023-50868"
  ],
  "related": [],
  "published": "2024-02-28T13:10:23Z",
  "modified": "2026-04-27T14:11:32Z",
  "affected": [
    {
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "unbound",
        "purl": "pkg:deb/ubuntu/unbound@1.9.4-2ubuntu1.5?arch=source&distro=focal"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.9.4-2ubuntu1.5"
            }
          ]
        }
      ],
      "versions": [
        "1.9.0-2ubuntu1",
        "1.9.0-2ubuntu2",
        "1.9.4-2",
        "1.9.4-2ubuntu1",
        "1.9.4-2ubuntu1.1",
        "1.9.4-2ubuntu1.2",
        "1.9.4-2ubuntu1.3",
        "1.9.4-2ubuntu1.4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libunbound8",
            "binary_version": "1.9.4-2ubuntu1.5"
          },
          {
            "binary_name": "python-unbound",
            "binary_version": "1.9.4-2ubuntu1.5"
          },
          {
            "binary_name": "python3-unbound",
            "binary_version": "1.9.4-2ubuntu1.5"
          },
          {
            "binary_name": "unbound",
            "binary_version": "1.9.4-2ubuntu1.5"
          },
          {
            "binary_name": "unbound-anchor",
            "binary_version": "1.9.4-2ubuntu1.5"
          },
          {
            "binary_name": "unbound-host",
            "binary_version": "1.9.4-2ubuntu1.5"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:20.04:LTS",
          "cves": [
            {
              "id": "CVE-2023-50387",
              "severity": [
                {
                  "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": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            },
            {
              "id": "CVE-2023-50868",
              "severity": [
                {
                  "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": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            }
          ]
        }
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "unbound",
        "purl": "pkg:deb/ubuntu/unbound@1.13.1-1ubuntu5.4?arch=source&distro=jammy"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.13.1-1ubuntu5.4"
            }
          ]
        }
      ],
      "versions": [
        "1.13.1-1ubuntu1",
        "1.13.1-1ubuntu3",
        "1.13.1-1ubuntu5",
        "1.13.1-1ubuntu5.1",
        "1.13.1-1ubuntu5.2",
        "1.13.1-1ubuntu5.3"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libunbound8",
            "binary_version": "1.13.1-1ubuntu5.4"
          },
          {
            "binary_name": "python3-unbound",
            "binary_version": "1.13.1-1ubuntu5.4"
          },
          {
            "binary_name": "unbound",
            "binary_version": "1.13.1-1ubuntu5.4"
          },
          {
            "binary_name": "unbound-anchor",
            "binary_version": "1.13.1-1ubuntu5.4"
          },
          {
            "binary_name": "unbound-host",
            "binary_version": "1.13.1-1ubuntu5.4"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:22.04:LTS",
          "cves": [
            {
              "id": "CVE-2023-50387",
              "severity": [
                {
                  "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": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            },
            {
              "id": "CVE-2023-50868",
              "severity": [
                {
                  "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": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            }
          ]
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6665-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-50387"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-50868"
    }
  ]
}