github - ghsa-7vc6-qmjj-2j83

GHSA-7VC6-QMJJ-2J83

Vulnerability from github – Published: 2022-05-24 17:26 – Updated: 2022-05-24 17:26

Details

In BIND 9.14.0 -> 9.16.5, 9.17.0 -> 9.17.3, If a server is configured with both QNAME minimization and 'forward first' then an attacker who can send queries to it may be able to trigger the condition that will cause the server to crash. Servers that 'forward only' are not affected.

Severity ?

7.5 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2020-8621"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-617"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-08-21T21:15:00Z",
    "severity": "MODERATE"
  },
  "details": "In BIND 9.14.0 -\u003e 9.16.5, 9.17.0 -\u003e 9.17.3, If a server is configured with both QNAME minimization and \u0027forward first\u0027 then an attacker who can send queries to it may be able to trigger the condition that will cause the server to crash. Servers that \u0027forward only\u0027 are not affected.",
  "id": "GHSA-7vc6-qmjj-2j83",
  "modified": "2022-05-24T17:26:23Z",
  "published": "2022-05-24T17:26:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8621"
    },
    {
      "type": "WEB",
      "url": "https://kb.isc.org/docs/cve-2020-8621"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202008-19"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20200827-0003"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4468-1"
    },
    {
      "type": "WEB",
      "url": "https://www.synology.com/security/advisory/Synology_SA_20_19"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2020-8621 (GCVE-0-2020-8621)

Vulnerability from cvelistv5 – Published: 2020-08-21 20:50 – Updated: 2024-09-16 16:18

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

While query forwarding and QNAME minimization are mutually incompatible, BIND did sometimes allow QNAME minimization when continuing with recursion after 'forward first' did not result in an answer. In these cases the data used by QNAME minimization might be inconsistent, leading to an assertion failure, causing the server to exit. Affects BIND 9.14.0 -> 9.16.5, 9.17.0 -> 9.17.3

Assigner

isc

References

URL

Tags

	https://kb.isc.org/docs/cve-2020-8621	x_refsource_CONFIRM
	https://security.netapp.com/advisory/ntap-2020082…	x_refsource_CONFIRM
	https://usn.ubuntu.com/4468-1/	vendor-advisoryx_refsource_UBUNTU
	https://security.gentoo.org/glsa/202008-19	vendor-advisoryx_refsource_GENTOO
	https://www.synology.com/security/advisory/Synolo…	x_refsource_CONFIRM
	http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
	http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE

Impacted products

	Vendor	Product	Version
	ISC	BIND9	Affected: 9.14.0 , < * (custom)

Credits

ISC would like to thank Joseph Gullo for bringing this vulnerability to our attention.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T10:03:46.261Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://kb.isc.org/docs/cve-2020-8621"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20200827-0003/"
          },
          {
            "name": "USN-4468-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4468-1/"
          },
          {
            "name": "GLSA-202008-19",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202008-19"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://www.synology.com/security/advisory/Synology_SA_20_19"
          },
          {
            "name": "openSUSE-SU-2020:1699",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html"
          },
          {
            "name": "openSUSE-SU-2020:1701",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "BIND9",
          "vendor": "ISC",
          "versions": [
            {
              "changes": [
                {
                  "at": "9.16.6",
                  "status": "unaffected"
                },
                {
                  "at": "9.17.0",
                  "status": "affected"
                },
                {
                  "at": "9.17.4",
                  "status": "unaffected"
                }
              ],
              "lessThan": "*",
              "status": "affected",
              "version": "9.14.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "ISC would like to thank Joseph Gullo for bringing this vulnerability to our attention."
        }
      ],
      "datePublic": "2020-08-20T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "In BIND 9.14.0 -\u003e 9.16.5, 9.17.0 -\u003e 9.17.3, If a server is configured with both QNAME minimization and \u0027forward first\u0027 then an attacker who can send queries to it may be able to trigger the condition that will cause the server to crash. Servers that \u0027forward only\u0027 are not affected."
        }
      ],
      "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": "While query forwarding and QNAME minimization are mutually incompatible, BIND did sometimes allow QNAME minimization when continuing with recursion after \u0027forward first\u0027 did not result in an answer. In these cases the data used by QNAME minimization might be inconsistent, leading to an assertion failure, causing the server to exit.  Affects BIND 9.14.0 -\u003e 9.16.5, 9.17.0 -\u003e 9.17.3",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-10-20T11:06:43",
        "orgId": "404fd4d2-a609-4245-b543-2c944a302a22",
        "shortName": "isc"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://kb.isc.org/docs/cve-2020-8621"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20200827-0003/"
        },
        {
          "name": "USN-4468-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4468-1/"
        },
        {
          "name": "GLSA-202008-19",
          "tags": [
            "vendor-advisory",
            "x_refsource_GENTOO"
          ],
          "url": "https://security.gentoo.org/glsa/202008-19"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://www.synology.com/security/advisory/Synology_SA_20_19"
        },
        {
          "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 9.16.6\n    BIND 9.17.4"
        }
      ],
      "source": {
        "discovery": "USER"
      },
      "title": "Attempting QNAME minimization after forwarding can lead to an assertion failure in resolver.c",
      "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": "2020-08-20T18:35:08.000Z",
          "ID": "CVE-2020-8621",
          "STATE": "PUBLIC",
          "TITLE": "Attempting QNAME minimization after forwarding can lead to an assertion failure in resolver.c"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "BIND9",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003e=",
                            "version_name": "",
                            "version_value": "9.14.0"
                          },
                          {
                            "version_affected": "\u003c",
                            "version_name": "",
                            "version_value": "9.16.6"
                          },
                          {
                            "version_affected": "\u003e=",
                            "version_name": "",
                            "version_value": "9.17.0"
                          },
                          {
                            "version_affected": "\u003c",
                            "version_name": "",
                            "version_value": "9.17.4"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "ISC"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "ISC would like to thank Joseph Gullo 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 9.14.0 -\u003e 9.16.5, 9.17.0 -\u003e 9.17.3, If a server is configured with both QNAME minimization and \u0027forward first\u0027 then an attacker who can send queries to it may be able to trigger the condition that will cause the server to crash. Servers that \u0027forward only\u0027 are not affected."
            }
          ]
        },
        "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": "While query forwarding and QNAME minimization are mutually incompatible, BIND did sometimes allow QNAME minimization when continuing with recursion after \u0027forward first\u0027 did not result in an answer. In these cases the data used by QNAME minimization might be inconsistent, leading to an assertion failure, causing the server to exit.  Affects BIND 9.14.0 -\u003e 9.16.5, 9.17.0 -\u003e 9.17.3"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://kb.isc.org/docs/cve-2020-8621",
              "refsource": "CONFIRM",
              "url": "https://kb.isc.org/docs/cve-2020-8621"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20200827-0003/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20200827-0003/"
            },
            {
              "name": "USN-4468-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4468-1/"
            },
            {
              "name": "GLSA-202008-19",
              "refsource": "GENTOO",
              "url": "https://security.gentoo.org/glsa/202008-19"
            },
            {
              "name": "https://www.synology.com/security/advisory/Synology_SA_20_19",
              "refsource": "CONFIRM",
              "url": "https://www.synology.com/security/advisory/Synology_SA_20_19"
            },
            {
              "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 9.16.6\n    BIND 9.17.4"
          }
        ],
        "source": {
          "discovery": "USER"
        },
        "work_around": [
          {
            "lang": "en",
            "value": "No workarounds known."
          }
        ]
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22",
    "assignerShortName": "isc",
    "cveId": "CVE-2020-8621",
    "datePublished": "2020-08-21T20:50:18.959156Z",
    "dateReserved": "2020-02-05T00:00:00",
    "dateUpdated": "2024-09-16T16:18:00.777Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-7VC6-QMJJ-2J83

CVE-2020-8621 (GCVE-0-2020-8621)

Tags

Sightings

Nomenclature