usn-8696-1
Vulnerability from osv_ubuntu
Published
2026-08-31 11:32
Modified
2026-08-31 11:32
Summary
bind9 vulnerability
Details

It was discovered that Bind incorrectly handled DNSSEC validation when a domain was covered by both NSEC and NSEC3 records with only one type having an RRSIG. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-13204",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "bind9",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.6"
          },
          {
            "binary_name": "bind9-dnsutils",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.6"
          },
          {
            "binary_name": "bind9-host",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.6"
          },
          {
            "binary_name": "bind9-libs",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.6"
          },
          {
            "binary_name": "bind9-utils",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.6"
          },
          {
            "binary_name": "bind9utils",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.6"
          },
          {
            "binary_name": "dnsutils",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "bind9",
        "purl": "pkg:deb/ubuntu/bind9@1:9.18.39-0ubuntu0.22.04.6?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:9.18.39-0ubuntu0.22.04.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:9.16.15-1ubuntu1",
        "1:9.16.15-1ubuntu2",
        "1:9.16.15-1ubuntu3",
        "1:9.18.0-2ubuntu1",
        "1:9.18.0-2ubuntu2",
        "1:9.18.0-2ubuntu3",
        "1:9.18.1-1ubuntu1",
        "1:9.18.1-1ubuntu1.1",
        "1:9.18.1-1ubuntu1.2",
        "1:9.18.1-1ubuntu1.3",
        "1:9.18.12-0ubuntu0.22.04.1",
        "1:9.18.12-0ubuntu0.22.04.2",
        "1:9.18.12-0ubuntu0.22.04.3",
        "1:9.18.18-0ubuntu0.22.04.1",
        "1:9.18.18-0ubuntu0.22.04.2",
        "1:9.18.24-0ubuntu0.22.04.1",
        "1:9.18.28-0ubuntu0.22.04.1",
        "1:9.18.30-0ubuntu0.22.04.1",
        "1:9.18.30-0ubuntu0.22.04.2",
        "1:9.18.39-0ubuntu0.22.04.1",
        "1:9.18.39-0ubuntu0.22.04.2",
        "1:9.18.39-0ubuntu0.22.04.3",
        "1:9.18.39-0ubuntu0.22.04.4",
        "1:9.18.39-0ubuntu0.22.04.5"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-13204",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "bind9",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.7"
          },
          {
            "binary_name": "bind9-dnsutils",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.7"
          },
          {
            "binary_name": "bind9-host",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.7"
          },
          {
            "binary_name": "bind9-libs",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.7"
          },
          {
            "binary_name": "bind9-utils",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.7"
          },
          {
            "binary_name": "bind9utils",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.7"
          },
          {
            "binary_name": "dnsutils",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "bind9",
        "purl": "pkg:deb/ubuntu/bind9@1:9.18.39-0ubuntu0.24.04.7?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:9.18.39-0ubuntu0.24.04.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:9.18.18-0ubuntu2",
        "1:9.18.21-0ubuntu1",
        "1:9.18.24-0ubuntu3",
        "1:9.18.24-0ubuntu4",
        "1:9.18.24-0ubuntu5",
        "1:9.18.28-0ubuntu0.24.04.1",
        "1:9.18.30-0ubuntu0.24.04.1",
        "1:9.18.30-0ubuntu0.24.04.2",
        "1:9.18.39-0ubuntu0.24.04.1",
        "1:9.18.39-0ubuntu0.24.04.2",
        "1:9.18.39-0ubuntu0.24.04.3",
        "1:9.18.39-0ubuntu0.24.04.5",
        "1:9.18.39-0ubuntu0.24.04.6"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-13204",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:26.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "bind9",
            "binary_version": "1:9.20.24-1ubuntu0.3"
          },
          {
            "binary_name": "bind9-dnsutils",
            "binary_version": "1:9.20.24-1ubuntu0.3"
          },
          {
            "binary_name": "bind9-host",
            "binary_version": "1:9.20.24-1ubuntu0.3"
          },
          {
            "binary_name": "bind9-libs",
            "binary_version": "1:9.20.24-1ubuntu0.3"
          },
          {
            "binary_name": "bind9-utils",
            "binary_version": "1:9.20.24-1ubuntu0.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "bind9",
        "purl": "pkg:deb/ubuntu/bind9@1:9.20.24-1ubuntu0.3?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:9.20.24-1ubuntu0.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:9.20.11-1ubuntu2",
        "1:9.20.11-1ubuntu3",
        "1:9.20.18-1ubuntu1",
        "1:9.20.18-1ubuntu2",
        "1:9.20.18-1ubuntu2.1",
        "1:9.20.24-1ubuntu0.1",
        "1:9.20.24-1ubuntu0.2"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that Bind incorrectly handled DNSSEC validation when a\ndomain was covered by both NSEC and NSEC3 records with only one type having\nan RRSIG. A remote attacker could possibly use this issue to cause Bind to\ncrash, resulting in a denial of service.",
  "id": "USN-8696-1",
  "modified": "2026-08-31T11:32:15Z",
  "published": "2026-08-31T11:32:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8696-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-13204"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "bind9 vulnerability",
  "upstream": [
    "UBUNTU-CVE-2026-13204"
  ]
}



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