Vulnerability-Lookup

FKIE_CVE-2021-25215

Vulnerability from fkie_nvd - Published: 2021-04-29 01:15 - Updated: 2026-06-17 03:41

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

In BIND 9.0.0 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9.

References

URL	Tags
security-officer@isc.org	http://www.openwall.com/lists/oss-security/2021/04/29/1	Mailing List, Third Party Advisory
security-officer@isc.org	http://www.openwall.com/lists/oss-security/2021/04/29/2	Mailing List, Third Party Advisory
security-officer@isc.org	http://www.openwall.com/lists/oss-security/2021/04/29/3	Mailing List, Third Party Advisory
security-officer@isc.org	http://www.openwall.com/lists/oss-security/2021/04/29/4	Mailing List, Third Party Advisory
security-officer@isc.org	https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf	Patch, Third Party Advisory
security-officer@isc.org	https://kb.isc.org/v1/docs/cve-2021-25215	Vendor Advisory
security-officer@isc.org	https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html	Mailing List, Third Party Advisory
security-officer@isc.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/
security-officer@isc.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/
security-officer@isc.org	https://security.netapp.com/advisory/ntap-20210521-0006/	Third Party Advisory
security-officer@isc.org	https://www.debian.org/security/2021/dsa-4909	Third Party Advisory
security-officer@isc.org	https://www.oracle.com/security-alerts/cpuoct2021.html	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2021/04/29/1	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2021/04/29/2	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2021/04/29/3	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2021/04/29/4	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://kb.isc.org/v1/docs/cve-2021-25215	Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/
af854a3a-2127-422b-91ae-364da2661108	https://security.netapp.com/advisory/ntap-20210521-0006/	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.debian.org/security/2021/dsa-4909	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.oracle.com/security-alerts/cpuoct2021.html	Patch, Third Party Advisory

Impacted products

Vendor	Product	Version
debian	debian_linux	9.0
debian	debian_linux	10.0
isc	bind	*
isc	bind	*
isc	bind	*
isc	bind	9.9.3
isc	bind	9.9.12
isc	bind	9.9.13
isc	bind	9.10.5
isc	bind	9.10.7
isc	bind	9.11.3
isc	bind	9.11.5
isc	bind	9.11.5
isc	bind	9.11.5
isc	bind	9.11.6
isc	bind	9.11.7
isc	bind	9.11.8
isc	bind	9.11.12
isc	bind	9.11.21
isc	bind	9.11.27
isc	bind	9.11.29
isc	bind	9.16.8
isc	bind	9.16.11
isc	bind	9.16.13
fedoraproject	fedora	33
fedoraproject	fedora	34
netapp	active_iq_unified_manager	-
netapp	cloud_backup	-
netapp	h300s_firmware	-
netapp	h300s	-
netapp	h500s_firmware	-
netapp	h500s	-
netapp	h700s_firmware	-
netapp	h700s	-
netapp	h300e_firmware	-
netapp	h300e	-
netapp	h500e_firmware	-
netapp	h500e	-
netapp	h700e_firmware	-
netapp	h700e	-
netapp	h410s_firmware	-
netapp	h410s	-
netapp	a250_firmware	-
netapp	a250	-
netapp	500f_firmware	-
netapp	500f	-
oracle	tekelec_platform_distribution	*
siemens	sinec_infrastructure_network_services	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "BIND9",
          "vendor": "ISC",
          "versions": [
            {
              "status": "affected",
              "version": "Open Source Branches 9.0 through 9.11 9.0.0 through versions before 9.11.30"
            },
            {
              "status": "affected",
              "version": "Open Source Branches 9.12 through 9.16 9.12.0 through versions before 9.16.14"
            },
            {
              "status": "affected",
              "version": "Supported Preview Branches 9.9-S through 9.11-S 9.9.3-S1 through versions before 9.11.30-S1"
            },
            {
              "status": "affected",
              "version": "Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.14-S1"
            },
            {
              "status": "affected",
              "version": "Development Branch 9.17 9.17.0 through versiosn before 9.17.12"
            }
          ]
        }
      ],
      "source": "security-officer@isc.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "18B8AA9D-C4D1-4F3B-9440-FC29D925961D",
              "versionEndExcluding": "9.11.31",
              "versionStartIncluding": "9.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "E38EFB1A-11B5-403F-815F-4899E7007D02",
              "versionEndExcluding": "9.16.15",
              "versionStartIncluding": "9.12.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "00F9BCC7-51F7-47EE-AFCE-946F24CC3694",
              "versionEndExcluding": "9.17.12",
              "versionStartIncluding": "9.17.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.9.3:s1:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "40EE014B-0CD8-45F3-BEDB-AE6368A78B04",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.9.12:s1:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "DAF8FA8C-0526-4389-AEC6-92AD62AA3929",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.9.13:s1:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "1A9BA952-A5DF-4CBA-8928-0B373C013C32",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.10.5:s1:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "CAD41122-C5D8-4256-8CB7-FF88DCD96A13",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.10.7:s1:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "6243685F-1E5B-4FF6-AE1B-44798032FBA6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.11.3:s1:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "C2FE13E1-0646-46FC-875B-CB4C34E20101",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.11.5:s3:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "1AA16E51-819C-4A1B-B66E-1C60C1782C0D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.11.5:s5:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "91533F9F-C0E5-4E84-8A4C-F744F956BF97",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.11.5:s6:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "46E6A4BD-D69B-4A70-821D-5612DD1315EF",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.11.6:s1:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "8AF9D390-0D5B-4963-A2D3-BF1E7CD95E9D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.11.7:s1:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "AB2B92F1-6BA8-41CA-9000-E0633462CC28",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.11.8:s1:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "02CA4635-7DFC-408E-A837-856E0F96CA1B",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.11.12:s1:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "3CABCB08-B838-45F7-AA87-77C6B8767DD0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.11.21:s1:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "5CC1F26C-4757-4C87-BD8B-2FA456A88C6F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.11.27:s1:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "582A4948-B64F-45D4-807A-846A85BB6B42",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.11.29:s1:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "F22E7F6A-0714-480D-ACDF-5027FD6697B2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.16.8:s1:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "288EAD80-574B-4839-9C2C-81D6D088A733",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.16.11:s1:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "3595F024-F910-4356-8B5B-D478960FF574",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:isc:bind:9.16.13:s1:*:*:supported_preview:*:*:*",
              "matchCriteriaId": "94661BA2-27F8-4FFE-B844-9404F735579D",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
              "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
              "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*",
              "matchCriteriaId": "3A756737-1CC4-42C2-A4DF-E1C893B4E2D5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "5C2089EE-5D7F-47EC-8EA5-0F69790564C4",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "6770B6C3-732E-4E22-BF1C-2D2FD610061C",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "9F9C8C20-42EB-4AB5-BD97-212DEB070C43",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "7FFF7106-ED78-49BA-9EC5-B889E3685D53",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "E63D8B0F-006E-4801-BF9D-1C001BBFB4F9",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "56409CEC-5A1E-4450-AA42-641E459CC2AF",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "B06F4839-D16A-4A61-9BB5-55B13F41E47F",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "108A2215-50FB-4074-94CF-C130FA14566D",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "7AFC73CE-ABB9-42D3-9A71-3F5BC5381E0E",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "32F0B6C0-F930-480D-962B-3F4EFDCC13C7",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "803BC414-B250-4E3A-A478-A3881340D6B8",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "0FEB3337-BFDE-462A-908B-176F92053CEC",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "736AEAE9-782B-4F71-9893-DED53367E102",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "D0B4AD8A-F172-4558-AEC6-FF424BA2D912",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "8497A4C9-8474-4A62-8331-3FE862ED4098",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:netapp:a250_firmware:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "1236B66D-EB11-4324-929F-E2B86683C3C7",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:netapp:a250:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "281DFC67-46BB-4FC2-BE03-3C65C9311F65",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:netapp:500f_firmware:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "ECF32BB1-9A58-4821-AE49-5D5C8200631F",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:netapp:500f:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "F21DE67F-CDFD-4D36-9967-633CD0240C6F",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:oracle:tekelec_platform_distribution:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "26F05F85-7458-4C8F-B93F-93C92E506A40",
              "versionEndIncluding": "7.7.1",
              "versionStartIncluding": "7.4.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B0F46497-4AB0-49A7-9453-CC26837BF253",
              "versionEndExcluding": "1.0.1.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In BIND 9.0.0 -\u003e 9.11.29, 9.12.0 -\u003e 9.16.13, and versions BIND 9.9.3-S1 -\u003e 9.11.29-S1 and 9.16.8-S1 -\u003e 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -\u003e 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9."
    },
    {
      "lang": "es",
      "value": "En BIND versiones 9.0.0 posteriores a 9.11.29, versiones 9.12.0 posteriores a 9.16.13, y BIND versiones 9.9.3-S1 posteriores a 9.11.29-S1 y versiones 9.16.8-S1 posteriores a 9.16.13-S1 de BIND Supported Preview Edition, as\u00ed como versiones de lanzamiento 9.17.0 posteriores a 9.17.11 de la rama de desarrollo de BIND versi\u00f3n 9.17, cuando una versi\u00f3n vulnerable de named recibe una consulta para un registro que desencadena un fallo descrito anteriormente, el proceso named terminar\u00e1 debido a un comprobaci\u00f3n de afirmaci\u00f3n fallido.\u0026#xa0;La vulnerabilidad afecta a todas las ramas de BIND 9 que se mantienen actualmente (9.11, 9.11-S, 9.16, 9.16-S, 9.17), as\u00ed como a todas las dem\u00e1s versiones de BIND 9"
    }
  ],
  "id": "CVE-2021-25215",
  "lastModified": "2026-06-17T03:41:39.150",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-officer@isc.org",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-04-29T01:15:08.013",
  "references": [
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2021/04/29/1"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2021/04/29/2"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2021/04/29/3"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2021/04/29/4"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://kb.isc.org/v1/docs/cve-2021-25215"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html"
    },
    {
      "source": "security-officer@isc.org",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/"
    },
    {
      "source": "security-officer@isc.org",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.netapp.com/advisory/ntap-20210521-0006/"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2021/dsa-4909"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2021/04/29/1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2021/04/29/2"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2021/04/29/3"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2021/04/29/4"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://kb.isc.org/v1/docs/cve-2021-25215"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.netapp.com/advisory/ntap-20210521-0006/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2021/dsa-4909"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
    }
  ],
  "sourceIdentifier": "security-officer@isc.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-617"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2021-25215 (GCVE-0-2021-25215)

Vulnerability from cvelistv5 – Published: 2021-04-29 00:55 – Updated: 2024-09-16 22:02

Title

An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

DNAME records, described in RFC 6672, provide a way to redirect a subtree of the domain name tree in the DNS. A flaw in the way named processes these records may trigger an attempt to add the same RRset to the ANSWER section more than once. This causes an assertion check in BIND to fail. DNAME records are processed by both authoritative and recursive servers. For authoritative servers, the DNAME record triggering the flaw can be retrieved from a zone database. For servers performing recursion, such a record is processed in the course of a query sent to an authoritative server. Affects BIND 9.0.0 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch.

Assigner

isc mitre root

References

12 references

URL	Tags
https://kb.isc.org/v1/docs/cve-2021-25215	x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2021/04/29/1	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/04/29/2	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/04/29/3	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/04/29/4	mailing-listx_refsource_MLIST
https://www.debian.org/security/2021/dsa-4909	vendor-advisoryx_refsource_DEBIAN
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://www.oracle.com/security-alerts/cpuoct2021.html	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2021052…	x_refsource_CONFIRM
https://cert-portal.siemens.com/productcert/pdf/s…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
ISC	BIND9	Affected: Open Source Branches 9.0 through 9.11 9.0.0 through versions before 9.11.30 Affected: Open Source Branches 9.12 through 9.16 9.12.0 through versions before 9.16.14 Affected: Supported Preview Branches 9.9-S through 9.11-S 9.9.3-S1 through versions before 9.11.30-S1 Affected: Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.14-S1 Affected: Development Branch 9.17 9.17.0 through versiosn before 9.17.12

Date Public

2021-04-28 00:00

Credits

ISC would like to thank Siva Kakarla for bringing this vulnerability to our attention.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T19:56:11.110Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://kb.isc.org/v1/docs/cve-2021-25215"
          },
          {
            "name": "[oss-security] 20210428 ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2021/04/29/1"
          },
          {
            "name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2021/04/29/2"
          },
          {
            "name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2021/04/29/3"
          },
          {
            "name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2021/04/29/4"
          },
          {
            "name": "DSA-4909",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2021/dsa-4909"
          },
          {
            "name": "[debian-lts-announce] 20210504 [SECURITY] [DLA 2647-1] bind9 security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html"
          },
          {
            "name": "FEDORA-2021-ace61cbee1",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/"
          },
          {
            "name": "FEDORA-2021-47f23870ec",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20210521-0006/"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "BIND9",
          "vendor": "ISC",
          "versions": [
            {
              "status": "affected",
              "version": "Open Source Branches 9.0 through 9.11 9.0.0 through versions before 9.11.30"
            },
            {
              "status": "affected",
              "version": "Open Source Branches 9.12 through 9.16 9.12.0 through versions before 9.16.14"
            },
            {
              "status": "affected",
              "version": "Supported Preview Branches 9.9-S through 9.11-S 9.9.3-S1 through versions before 9.11.30-S1"
            },
            {
              "status": "affected",
              "version": "Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.14-S1"
            },
            {
              "status": "affected",
              "version": "Development Branch 9.17 9.17.0 through versiosn before 9.17.12"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "ISC would like to thank Siva Kakarla for bringing this vulnerability to our attention."
        }
      ],
      "datePublic": "2021-04-28T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "In BIND 9.0.0 -\u003e 9.11.29, 9.12.0 -\u003e 9.16.13, and versions BIND 9.9.3-S1 -\u003e 9.11.29-S1 and 9.16.8-S1 -\u003e 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -\u003e 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "We are not aware of any active exploits."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "DNAME records, described in RFC 6672, provide a way to redirect a subtree of the domain name tree in the DNS. A flaw in the way named processes these records may trigger an attempt to add the same RRset to the ANSWER section more than once. This causes an assertion check in BIND to fail.  DNAME records are processed by both authoritative and recursive servers. For authoritative servers, the DNAME record triggering the flaw can be retrieved from a zone database. For servers performing recursion, such a record is processed in the course of a query sent to an authoritative server.  Affects BIND 9.0.0 -\u003e 9.11.29, 9.12.0 -\u003e 9.16.13, and versions BIND 9.9.3-S1 -\u003e 9.11.29-S1 and 9.16.8-S1 -\u003e 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -\u003e 9.17.11 of the BIND 9.17 development branch.",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-03-08T14:08:28.000Z",
        "orgId": "404fd4d2-a609-4245-b543-2c944a302a22",
        "shortName": "isc"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://kb.isc.org/v1/docs/cve-2021-25215"
        },
        {
          "name": "[oss-security] 20210428 ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/04/29/1"
        },
        {
          "name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/04/29/2"
        },
        {
          "name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/04/29/3"
        },
        {
          "name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/04/29/4"
        },
        {
          "name": "DSA-4909",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2021/dsa-4909"
        },
        {
          "name": "[debian-lts-announce] 20210504 [SECURITY] [DLA 2647-1] bind9 security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html"
        },
        {
          "name": "FEDORA-2021-ace61cbee1",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/"
        },
        {
          "name": "FEDORA-2021-47f23870ec",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20210521-0006/"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to the patched release most closely related to your current version of BIND:\n\n    BIND 9.11.31\n    BIND 9.16.15\n    BIND 9.17.12\n\nBIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.\n\n    BIND 9.11.31-S1\n    BIND 9.16.15-S1"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself",
      "workarounds": [
        {
          "lang": "en",
          "value": "No workarounds known."
        }
      ],
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-officer@isc.org",
          "DATE_PUBLIC": "2021-04-28T20:20:01.000Z",
          "ID": "CVE-2021-25215",
          "STATE": "PUBLIC",
          "TITLE": "An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "BIND9",
                      "version": {
                        "version_data": [
                          {
                            "version_name": "Open Source Branches 9.0 through 9.11",
                            "version_value": "9.0.0 through versions before 9.11.30"
                          },
                          {
                            "version_name": "Open Source Branches 9.12 through 9.16",
                            "version_value": "9.12.0 through versions before 9.16.14"
                          },
                          {
                            "version_name": "Supported Preview Branches 9.9-S through 9.11-S",
                            "version_value": "9.9.3-S1 through versions before 9.11.30-S1"
                          },
                          {
                            "version_name": "Supported Preview Branch 9.16-S",
                            "version_value": "9.16.8-S1 through versions before 9.16.14-S1"
                          },
                          {
                            "version_name": "Development Branch 9.17",
                            "version_value": "9.17.0 through versiosn before 9.17.12"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "ISC"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "ISC would like to thank Siva Kakarla for bringing this vulnerability to our attention."
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "In BIND 9.0.0 -\u003e 9.11.29, 9.12.0 -\u003e 9.16.13, and versions BIND 9.9.3-S1 -\u003e 9.11.29-S1 and 9.16.8-S1 -\u003e 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -\u003e 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9."
            }
          ]
        },
        "exploit": [
          {
            "lang": "en",
            "value": "We are not aware of any active exploits."
          }
        ],
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "DNAME records, described in RFC 6672, provide a way to redirect a subtree of the domain name tree in the DNS. A flaw in the way named processes these records may trigger an attempt to add the same RRset to the ANSWER section more than once. This causes an assertion check in BIND to fail.  DNAME records are processed by both authoritative and recursive servers. For authoritative servers, the DNAME record triggering the flaw can be retrieved from a zone database. For servers performing recursion, such a record is processed in the course of a query sent to an authoritative server.  Affects BIND 9.0.0 -\u003e 9.11.29, 9.12.0 -\u003e 9.16.13, and versions BIND 9.9.3-S1 -\u003e 9.11.29-S1 and 9.16.8-S1 -\u003e 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -\u003e 9.17.11 of the BIND 9.17 development branch."
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://kb.isc.org/v1/docs/cve-2021-25215",
              "refsource": "CONFIRM",
              "url": "https://kb.isc.org/v1/docs/cve-2021-25215"
            },
            {
              "name": "[oss-security] 20210428 ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2021/04/29/1"
            },
            {
              "name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2021/04/29/2"
            },
            {
              "name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2021/04/29/3"
            },
            {
              "name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2021/04/29/4"
            },
            {
              "name": "DSA-4909",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2021/dsa-4909"
            },
            {
              "name": "[debian-lts-announce] 20210504 [SECURITY] [DLA 2647-1] bind9 security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html"
            },
            {
              "name": "FEDORA-2021-ace61cbee1",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/"
            },
            {
              "name": "FEDORA-2021-47f23870ec",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuoct2021.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20210521-0006/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20210521-0006/"
            },
            {
              "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf",
              "refsource": "CONFIRM",
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
            }
          ]
        },
        "solution": [
          {
            "lang": "en",
            "value": "Upgrade to the patched release most closely related to your current version of BIND:\n\n    BIND 9.11.31\n    BIND 9.16.15\n    BIND 9.17.12\n\nBIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.\n\n    BIND 9.11.31-S1\n    BIND 9.16.15-S1"
          }
        ],
        "source": {
          "discovery": "EXTERNAL"
        },
        "work_around": [
          {
            "lang": "en",
            "value": "No workarounds known."
          }
        ]
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22",
    "assignerShortName": "isc",
    "cveId": "CVE-2021-25215",
    "datePublished": "2021-04-29T00:55:16.726Z",
    "dateReserved": "2021-01-15T00:00:00.000Z",
    "dateUpdated": "2024-09-16T22:02:24.791Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.