Vulnerability-Lookup

GSD-2020-8619

Vulnerability from gsd - Updated: 2023-12-13 01:21

Details

In ISC BIND9 versions BIND 9.11.14 -> 9.11.19, BIND 9.14.9 -> 9.14.12, BIND 9.16.0 -> 9.16.3, BIND Supported Preview Edition 9.11.14-S1 -> 9.11.19-S1: Unless a nameserver is providing authoritative service for one or more zones and at least one zone contains an empty non-terminal entry containing an asterisk ("*") character, this defect cannot be encountered. A would-be attacker who is allowed to change zone content could theoretically introduce such a record in order to exploit this condition to cause denial of service, though we consider the use of this vector unlikely because any such attack would require a significant privilege level and be easily traceable.

Aliases

CVE-2020-8619

Aliases

CVE-2020-8619

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2020-8619",
    "description": "In ISC BIND9 versions BIND 9.11.14 -\u003e 9.11.19, BIND 9.14.9 -\u003e 9.14.12, BIND 9.16.0 -\u003e 9.16.3, BIND Supported Preview Edition 9.11.14-S1 -\u003e 9.11.19-S1: Unless a nameserver is providing authoritative service for one or more zones and at least one zone contains an empty non-terminal entry containing an asterisk (\"*\") character, this defect cannot be encountered. A would-be attacker who is allowed to change zone content could theoretically introduce such a record in order to exploit this condition to cause denial of service, though we consider the use of this vector unlikely because any such attack would require a significant privilege level and be easily traceable.",
    "id": "GSD-2020-8619",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-8619.html",
      "https://www.debian.org/security/2020/dsa-4752",
      "https://access.redhat.com/errata/RHSA-2020:4500",
      "https://ubuntu.com/security/CVE-2020-8619",
      "https://security.archlinux.org/CVE-2020-8619",
      "https://linux.oracle.com/cve/CVE-2020-8619.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
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      ],
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      "id": "GSD-2020-8619",
      "modified": "2023-12-13T01:21:53.572007Z",
      "schema_version": "1.4.0"
    }
  },
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          "lang": "eng",
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      "source": {
        "discovery": "USER"
      },
      "work_around": [
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      ]
    },
    "nvd.nist.gov": {
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            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.0,
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            "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 8.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
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          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 4.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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          "exploitabilityScore": 1.2,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2022-10-07T15:26Z",
      "publishedDate": "2020-06-17T22:15Z"
    }
  }
}

CVE-2020-8619 (GCVE-0-2020-8619)

Vulnerability from cvelistv5 – Published: 2020-06-17 21:20 – Updated: 2024-09-17 03:28

Title

A buffer boundary check assertion in rdataset.c can fail incorrectly during zone transfer

Summary

Severity

4.9 (Medium)


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

CWE

The asterisk character ("*") is allowed in DNS zone files, where it is most commonly present as a wildcard at a terminal node of the Domain Name System graph. However, the RFCs do not require and BIND does not enforce that an asterisk character be present only at a terminal node. A problem can occur when an asterisk is present in an empty non-terminal location within the DNS graph. If such a node exists, after a series of queries, named can reach an inconsistent state that results in the failure of an assertion check in rbtdb.c, followed by the program exiting due to the assertion failure. Versions affected: BIND 9.11.14 -> 9.11.19, BIND 9.14.9 -> 9.14.12, BIND 9.16.0 -> 9.16.3. Also, versions 9.11.14-S1 -> 9.11.19-S1 of BIND Supported Preview Edition

Assigner

isc CNA under the mitre root

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

References

8 references

URL	Tags
https://kb.isc.org/docs/cve-2020-8619	x_refsource_CONFIRM
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://security.netapp.com/advisory/ntap-2020062…	x_refsource_CONFIRM
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://usn.ubuntu.com/4399-1/	vendor-advisoryx_refsource_UBUNTU
https://www.debian.org/security/2020/dsa-4752	vendor-advisoryx_refsource_DEBIAN
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE

Impacted products

1 product

Vendor	Product	Version
ISC	BIND9	Affected: 9.11.14 through versions before 9.11.20 Affected: 9.16.0 through versions before 9.16.4 Affected: 9.11.14-S1 through versions before 9.11.20-S1 Affected: 9.14.9 through versions 9.14.12

Date Public

2020-06-10 00:00

Show details on NVD website

JSON

To clipboard

{
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        "providerMetadata": {
          "dateUpdated": "2024-08-04T10:03:46.317Z",
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            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "The asterisk character (\"*\") is allowed in DNS zone files, where it is most commonly present as a wildcard at a terminal node of the Domain Name System graph. However, the RFCs do not require and BIND does not enforce that an asterisk character be present only at a terminal node.  A problem can occur when an asterisk is present in an empty non-terminal location within the DNS graph. If such a node exists, after a series of queries, named can reach an inconsistent state that results in the failure of an assertion check in rbtdb.c, followed by the program exiting due to the assertion failure.  Versions affected: BIND 9.11.14 -\u003e 9.11.19, BIND 9.14.9 -\u003e 9.14.12, BIND 9.16.0 -\u003e 9.16.3. Also, versions 9.11.14-S1 -\u003e 9.11.19-S1 of BIND Supported Preview Edition",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-10-20T11:06:44.000Z",
        "orgId": "404fd4d2-a609-4245-b543-2c944a302a22",
        "shortName": "isc"
      },
      "references": [
        {
          "tags": [
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          ],
          "url": "https://kb.isc.org/docs/cve-2020-8619"
        },
        {
          "name": "FEDORA-2020-54a91444ff",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNFTTYJ5JJJJ6QG3AHXJGDIIEYMDFWFW/"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20200625-0003/"
        },
        {
          "name": "FEDORA-2020-5f8da4b260",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EIOXMJX4N3LBKC65OXNBE52W4GAS7QEX/"
        },
        {
          "name": "USN-4399-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4399-1/"
        },
        {
          "name": "DSA-4752",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2020/dsa-4752"
        },
        {
          "name": "openSUSE-SU-2020:1699",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html"
        },
        {
          "name": "openSUSE-SU-2020:1701",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to the patched release most closely related to your current version of BIND:\n\n    BIND 9.11.20\n    BIND 9.16.4\n\nBIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.\n\n    BIND 9.11.20-S1"
        }
      ],
      "source": {
        "discovery": "USER"
      },
      "title": "A buffer boundary check assertion in rdataset.c can fail incorrectly during zone transfer",
      "workarounds": [
        {
          "lang": "en",
          "value": "None"
        }
      ],
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-officer@isc.org",
          "DATE_PUBLIC": "2020-06-10T19:10:58.000Z",
          "ID": "CVE-2020-8619",
          "STATE": "PUBLIC",
          "TITLE": "A buffer boundary check assertion in rdataset.c can fail incorrectly during zone transfer"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "BIND9",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "9.11.14 through versions before 9.11.20"
                          },
                          {
                            "version_value": "9.16.0 through versions before 9.16.4"
                          },
                          {
                            "version_value": "9.11.14-S1 through versions before 9.11.20-S1"
                          },
                          {
                            "version_value": "9.14.9 through versions 9.14.12"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "ISC"
              }
            ]
          }
        },
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            {
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              "value": "In ISC BIND9 versions BIND 9.11.14 -\u003e 9.11.19, BIND 9.14.9 -\u003e 9.14.12, BIND 9.16.0 -\u003e 9.16.3, BIND Supported Preview Edition 9.11.14-S1 -\u003e 9.11.19-S1: Unless a nameserver is providing authoritative service for one or more zones and at least one zone contains an empty non-terminal entry containing an asterisk (\"*\") character, this defect cannot be encountered. A would-be attacker who is allowed to change zone content could theoretically introduce such a record in order to exploit this condition to cause denial of service, though we consider the use of this vector unlikely because any such attack would require a significant privilege level and be easily traceable."
            }
          ]
        },
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 4.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        },
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          "problemtype_data": [
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              "description": [
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                  "lang": "eng",
                  "value": "The asterisk character (\"*\") is allowed in DNS zone files, where it is most commonly present as a wildcard at a terminal node of the Domain Name System graph. However, the RFCs do not require and BIND does not enforce that an asterisk character be present only at a terminal node.  A problem can occur when an asterisk is present in an empty non-terminal location within the DNS graph. If such a node exists, after a series of queries, named can reach an inconsistent state that results in the failure of an assertion check in rbtdb.c, followed by the program exiting due to the assertion failure.  Versions affected: BIND 9.11.14 -\u003e 9.11.19, BIND 9.14.9 -\u003e 9.14.12, BIND 9.16.0 -\u003e 9.16.3. Also, versions 9.11.14-S1 -\u003e 9.11.19-S1 of BIND Supported Preview Edition"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://kb.isc.org/docs/cve-2020-8619",
              "refsource": "CONFIRM",
              "url": "https://kb.isc.org/docs/cve-2020-8619"
            },
            {
              "name": "FEDORA-2020-54a91444ff",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CNFTTYJ5JJJJ6QG3AHXJGDIIEYMDFWFW/"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20200625-0003/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20200625-0003/"
            },
            {
              "name": "FEDORA-2020-5f8da4b260",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EIOXMJX4N3LBKC65OXNBE52W4GAS7QEX/"
            },
            {
              "name": "USN-4399-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4399-1/"
            },
            {
              "name": "DSA-4752",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2020/dsa-4752"
            },
            {
              "name": "openSUSE-SU-2020:1699",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html"
            },
            {
              "name": "openSUSE-SU-2020:1701",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html"
            }
          ]
        },
        "solution": [
          {
            "lang": "en",
            "value": "Upgrade to the patched release most closely related to your current version of BIND:\n\n    BIND 9.11.20\n    BIND 9.16.4\n\nBIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.\n\n    BIND 9.11.20-S1"
          }
        ],
        "source": {
          "discovery": "USER"
        },
        "work_around": [
          {
            "lang": "en",
            "value": "None"
          }
        ]
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22",
    "assignerShortName": "isc",
    "cveId": "CVE-2020-8619",
    "datePublished": "2020-06-17T21:20:13.611Z",
    "dateReserved": "2020-02-05T00:00:00.000Z",
    "dateUpdated": "2024-09-17T03:28:34.772Z",
    "state": "PUBLISHED"
  },
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}

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

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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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