Vulnerability-Lookup

FKIE_CVE-2021-25214

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

Severity

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

Summary

In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 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 9 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 malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed.

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-2021-25214	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
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-2021-25214	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

Impacted products

Vendor	Product	Version
isc	bind	*
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
debian	debian_linux	9.0
debian	debian_linux	10.0
fedoraproject	fedora	33
fedoraproject	fedora	34
siemens	sinec_infrastructure_network_services	*
netapp	active_iq_unified_manager	-
netapp	cloud_backup	-
netapp	aff_a250_firmware	-
netapp	aff_a250	-
netapp	aff_500f_firmware	-
netapp	aff_500f	-
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	-

JSON

To clipboard

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}

CVE-2021-25214 (GCVE-0-2021-25214)

Vulnerability from cvelistv5 – Published: 2021-04-29 00:55 – Updated: 2024-09-17 00:37

Title

A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly

Summary

Severity

6.5 (Medium)


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

CWE

Incremental zone transfers (IXFR) provide a way of transferring changed portion(s) of a zone between servers. An IXFR stream containing SOA records with an owner name other than the transferred zone's apex may cause the receiving named server to inadvertently remove the SOA record for the zone in question from the zone database. This leads to an assertion failure when the next SOA refresh query for that zone is made. Affects BIND 9.8.5 -> 9.8.8, 9.9.3 -> 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 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch.

Assigner

isc CNA under the mitre root

CNA scorecard A 95/100 over 33 records in the last 180 days details

References

11 references

URL	Tags
https://kb.isc.org/v1/docs/cve-2021-25214	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://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 Branch 9.8 9.8.5 through 9.8.8 Affected: Open Source Branches 9.9 through 9.11 9.9.3 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 Greg Kuechle of SaskTel for bringing this vulnerability to our attention.

Show details on NVD website

JSON

To clipboard

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          "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": "USER"
      },
      "title": "A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly",
      "workarounds": [
        {
          "lang": "en",
          "value": "Disabling incremental zone transfers (IXFR) by setting request-ixfr no; in the desired configuration block (options, zone, or server) prevents the failing assertion from being evaluated."
        }
      ],
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-officer@isc.org",
          "DATE_PUBLIC": "2021-04-28T20:19:47.000Z",
          "ID": "CVE-2021-25214",
          "STATE": "PUBLIC",
          "TITLE": "A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "BIND9",
                      "version": {
                        "version_data": [
                          {
                            "version_name": "Open Source Branch 9.8",
                            "version_value": "9.8.5 through 9.8.8"
                          },
                          {
                            "version_name": "Open Source Branches 9.9 through 9.11",
                            "version_value": "9.9.3 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"
                          },
                          {
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                            "version_value": "9.9.3-S1 through versions before 9.11.30-S1"
                          },
                          {
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                            "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 Greg Kuechle of SaskTel 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 9.8.5 -\u003e 9.8.8, 9.9.3 -\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 9 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 malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed."
            }
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        },
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            "value": "We are not aware of any active exploits."
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Incremental zone transfers (IXFR) provide a way of transferring changed portion(s) of a zone between servers. An IXFR stream containing SOA records with an owner name other than the transferred zone\u0027s apex may cause the receiving named server to inadvertently remove the SOA record for the zone in question from the zone database. This leads to an assertion failure when the next SOA refresh query for that zone is made.  Affects BIND 9.8.5 -\u003e 9.8.8, 9.9.3 -\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 9 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-2021-25214",
              "refsource": "CONFIRM",
              "url": "https://kb.isc.org/v1/docs/cve-2021-25214"
            },
            {
              "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://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"
          }
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        "source": {
          "discovery": "USER"
        },
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          {
            "lang": "en",
            "value": "Disabling incremental zone transfers (IXFR) by setting request-ixfr no; in the desired configuration block (options, zone, or server) prevents the failing assertion from being evaluated."
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        ]
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  "cveMetadata": {
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    "cveId": "CVE-2021-25214",
    "datePublished": "2021-04-29T00:55:16.042Z",
    "dateReserved": "2021-01-15T00:00:00.000Z",
    "dateUpdated": "2024-09-17T00:37:21.136Z",
    "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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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.

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