usn-7739-1
Vulnerability from osv_ubuntu
Published
2025-09-08 00:14
Modified
2026-04-22 07:37
Summary
bind9 vulnerabilities
Details

Greg Kuechle discovered that Bind incorrectly handled certain incremental zone updates. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. (CVE-2021-25214)

Siva Kakarla discovered that Bind incorrectly handled certain DNAME records. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. (CVE-2021-25215)

It was discovered that Bind incorrectly handled GSSAPI security policy negotiation. A remote attacker could use this issue to cause Bind to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-25216)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-25214",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-25215",
              "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"
                }
              ]
            },
            {
              "id": "CVE-2021-25216",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "bind9",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
          },
          {
            "binary_name": "bind9-host",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
          },
          {
            "binary_name": "bind9utils",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
          },
          {
            "binary_name": "dnsutils",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
          },
          {
            "binary_name": "host",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
          },
          {
            "binary_name": "libbind9-90",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
          },
          {
            "binary_name": "libdns100",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
          },
          {
            "binary_name": "libisc95",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
          },
          {
            "binary_name": "libisccc90",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
          },
          {
            "binary_name": "libisccfg90",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
          },
          {
            "binary_name": "liblwres90",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
          },
          {
            "binary_name": "lwresd",
            "binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "bind9",
        "purl": "pkg:deb/ubuntu/bind9@1:9.9.5.dfsg-3ubuntu0.19+esm13?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:9.9.5.dfsg-3ubuntu0.19+esm13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:9.9.3.dfsg.P2-4ubuntu1",
        "1:9.9.3.dfsg.P2-4ubuntu2",
        "1:9.9.3.dfsg.P2-4ubuntu3",
        "1:9.9.5.dfsg-2",
        "1:9.9.5.dfsg-3",
        "1:9.9.5.dfsg-3ubuntu0.1",
        "1:9.9.5.dfsg-3ubuntu0.2",
        "1:9.9.5.dfsg-3ubuntu0.3",
        "1:9.9.5.dfsg-3ubuntu0.4",
        "1:9.9.5.dfsg-3ubuntu0.5",
        "1:9.9.5.dfsg-3ubuntu0.6",
        "1:9.9.5.dfsg-3ubuntu0.7",
        "1:9.9.5.dfsg-3ubuntu0.8",
        "1:9.9.5.dfsg-3ubuntu0.9",
        "1:9.9.5.dfsg-3ubuntu0.10",
        "1:9.9.5.dfsg-3ubuntu0.11",
        "1:9.9.5.dfsg-3ubuntu0.12",
        "1:9.9.5.dfsg-3ubuntu0.13",
        "1:9.9.5.dfsg-3ubuntu0.14",
        "1:9.9.5.dfsg-3ubuntu0.15",
        "1:9.9.5.dfsg-3ubuntu0.16",
        "1:9.9.5.dfsg-3ubuntu0.17",
        "1:9.9.5.dfsg-3ubuntu0.18",
        "1:9.9.5.dfsg-3ubuntu0.19",
        "1:9.9.5.dfsg-3ubuntu0.19+esm1",
        "1:9.9.5.dfsg-3ubuntu0.19+esm2",
        "1:9.9.5.dfsg-3ubuntu0.19+esm3",
        "1:9.9.5.dfsg-3ubuntu0.19+esm4",
        "1:9.9.5.dfsg-3ubuntu0.19+esm5",
        "1:9.9.5.dfsg-3ubuntu0.19+esm6",
        "1:9.9.5.dfsg-3ubuntu0.19+esm7",
        "1:9.9.5.dfsg-3ubuntu0.19+esm9",
        "1:9.9.5.dfsg-3ubuntu0.19+esm10",
        "1:9.9.5.dfsg-3ubuntu0.19+esm11",
        "1:9.9.5.dfsg-3ubuntu0.19+esm12"
      ]
    }
  ],
  "aliases": [],
  "details": "Greg Kuechle discovered that Bind incorrectly handled certain incremental\nzone updates. A remote attacker could possibly use this issue to cause Bind\nto crash, resulting in a denial of service. (CVE-2021-25214)\n\nSiva Kakarla discovered that Bind incorrectly handled certain DNAME\nrecords. A remote attacker could possibly use this issue to cause Bind to\ncrash, resulting in a denial of service. (CVE-2021-25215)\n\nIt was discovered that Bind incorrectly handled GSSAPI security policy\nnegotiation. A remote attacker could use this issue to cause Bind to crash,\nresulting in a denial of service, or possibly execute arbitrary code.\n(CVE-2021-25216)",
  "id": "USN-7739-1",
  "modified": "2026-04-22T07:37:23Z",
  "published": "2025-09-08T00:14:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7739-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-25214"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-25215"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-25216"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "bind9 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2021-25214",
    "UBUNTU-CVE-2021-25215",
    "UBUNTU-CVE-2021-25216"
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.