Vulnerability-Lookup

ubuntu-cve-2018-20802

Vulnerability from osv_ubuntu

Published

2020-11-23 16:15

Modified

2026-02-27 09:24

Summary

Details

A user authorized to perform database queries may trigger denial of service by issuing specially crafted queries with compound indexes affecting QueryPlanner. This issue affects MongoDB Server v3.6 versions prior to 3.6.9 and MongoDB Server v4.0 versions prior to 4.0.3.

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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2018-20802	REPORT
	https://jira.mongodb.org/browse/SERVER-36993	REPORT
	https://www.cve.org/CVERecord?id=CVE-2018-20802	REPORT
	https://ubuntu.com/security/notices/USN-8064-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "mongodb",
            "binary_version": "1:3.6.3-0ubuntu1.4+esm1"
          },
          {
            "binary_name": "mongodb-clients",
            "binary_version": "1:3.6.3-0ubuntu1.4+esm1"
          },
          {
            "binary_name": "mongodb-server",
            "binary_version": "1:3.6.3-0ubuntu1.4+esm1"
          },
          {
            "binary_name": "mongodb-server-core",
            "binary_version": "1:3.6.3-0ubuntu1.4+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "mongodb",
        "purl": "pkg:deb/ubuntu/mongodb@1:3.6.3-0ubuntu1.4+esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:3.6.3-0ubuntu1.4+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:3.4.7-1",
        "1:3.4.7-1ubuntu1",
        "1:3.4.7-1ubuntu2",
        "1:3.4.7-1ubuntu4",
        "1:3.4.14-3ubuntu1",
        "1:3.4.14-3ubuntu2",
        "1:3.6.3-0ubuntu1",
        "1:3.6.3-0ubuntu1.1",
        "1:3.6.3-0ubuntu1.3",
        "1:3.6.3-0ubuntu1.4"
      ]
    }
  ],
  "aliases": [],
  "details": "A user authorized to perform database queries may trigger denial of service by issuing specially crafted queries with compound indexes affecting QueryPlanner. This issue affects MongoDB Server v3.6 versions prior to 3.6.9 and MongoDB Server v4.0 versions prior to 4.0.3.",
  "id": "UBUNTU-CVE-2018-20802",
  "modified": "2026-02-27T09:24:20Z",
  "published": "2020-11-23T16:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-20802"
    },
    {
      "type": "REPORT",
      "url": "https://jira.mongodb.org/browse/SERVER-36993"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2018-20802"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8064-1"
    }
  ],
  "related": [
    "USN-8064-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2018-20802"
  ]
}

CVE-2018-20802 (GCVE-0-2018-20802)

Vulnerability from cvelistv5 – Published: 2020-11-23 15:15 – Updated: 2024-09-17 02:26

Title

Post-auth queries on compound index may crash mongod

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

CWE-394 - Unexpected Status Code or Return Value

Assigner

mongodb

References

1 reference

URL	Tags
https://jira.mongodb.org/browse/SERVER-36993	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
MongoDB Inc.	MongoDB Server	Affected: 3.6 , < 3.6.9 (custom) Affected: 4.0 , < 4.0.3 (custom)

Date Public

2020-11-30 00:00

Show details on NVD website

JSON

To clipboard

{
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        "providerMetadata": {
          "dateUpdated": "2024-08-05T12:12:27.292Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
          {
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              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://jira.mongodb.org/browse/SERVER-36993"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "product": "MongoDB Server",
          "vendor": "MongoDB Inc.",
          "versions": [
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              "lessThan": "3.6.9",
              "status": "affected",
              "version": "3.6",
              "versionType": "custom"
            },
            {
              "lessThan": "4.0.3",
              "status": "affected",
              "version": "4.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2020-11-30T00:00:00.000Z",
      "descriptions": [
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          "supportingMedia": [
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              "type": "text/html",
              "value": "\u003cp\u003eA user authorized to perform database queries may trigger denial of service by issuing specially crafted queries with compound indexes affecting QueryPlanner. This issue affects MongoDB Server v3.6 versions prior to 3.6.9 and MongoDB Server v4.0 versions prior to 4.0.3.\u003c/p\u003e"
            }
          ],
          "value": "A user authorized to perform database queries may trigger denial of service by issuing specially crafted queries with compound indexes affecting QueryPlanner. This issue affects MongoDB Server v3.6 versions prior to 3.6.9 and MongoDB Server v4.0 versions prior to 4.0.3."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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      "problemTypes": [
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          "descriptions": [
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              "description": "CWE-394 Unexpected Status Code or Return Value",
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      "providerMetadata": {
        "dateUpdated": "2024-01-23T14:21:20.619Z",
        "orgId": "a39b4221-9bd0-4244-95fc-f3e2e07f1deb",
        "shortName": "mongodb"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://jira.mongodb.org/browse/SERVER-36993"
        }
      ],
      "source": {
        "discovery": "INTERNAL"
      },
      "title": "Post-auth queries on compound index may crash mongod",
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      "x_legacyV4Record": {
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          "ASSIGNER": "cna@mongodb.com",
          "DATE_PUBLIC": "2020-11-30T14:00:00.000Z",
          "ID": "CVE-2018-20802",
          "STATE": "PUBLIC",
          "TITLE": "Post-auth queries on compound index may crash mongod"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
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                    {
                      "product_name": "MongoDB Server",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_name": "3.6",
                            "version_value": "3.6.9"
                          },
                          {
                            "version_affected": "\u003c",
                            "version_name": "4.0",
                            "version_value": "4.0.3"
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                    }
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                },
                "vendor_name": "MongoDB Inc."
              }
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        },
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        "description": {
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            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
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            "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"
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                  "value": "CWE-394 Unexpected Status Code or Return Value"
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              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://jira.mongodb.org/browse/SERVER-36993",
              "refsource": "CONFIRM",
              "url": "https://jira.mongodb.org/browse/SERVER-36993"
            }
          ]
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        "source": {
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    "datePublished": "2020-11-23T15:15:18.509Z",
    "dateReserved": "2019-03-15T00:00:00.000Z",
    "dateUpdated": "2024-09-17T02:26:45.416Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

usn-8064-1

Vulnerability from osv_ubuntu

Published

2026-02-25 16:46

Modified

2026-06-25 10:47

Summary

mongodb vulnerabilities

Details

Eliot Horowitz discovered that MongoDB may fail to validate some instances of malformed BSON. A remote attacker could possibly use this issue to cause MongoDB to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2015-1609)

It was discovered that MongoDB read raw permissions from .dbshell history files. A local attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-6494)

Travis Brown discovered that MongoDB may be unable to parse specially crafted UTF-8 strings in BSON requests. A remote attacker could possibly use this issue to cause MongoDB to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-20802)

References

URL

Type

	https://ubuntu.com/security/notices/USN-8064-1	ADVISORY
	https://ubuntu.com/security/CVE-2018-20802	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [],
          "ecosystem": "Ubuntu:Pro:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "mongodb",
            "binary_version": "1:2.4.9-1ubuntu2+esm2"
          },
          {
            "binary_name": "mongodb-clients",
            "binary_version": "1:2.4.9-1ubuntu2+esm2"
          },
          {
            "binary_name": "mongodb-server",
            "binary_version": "1:2.4.9-1ubuntu2+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "mongodb",
        "purl": "pkg:deb/ubuntu/mongodb@1:2.4.9-1ubuntu2+esm2?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:2.4.9-1ubuntu2+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:2.4.6-0ubuntu5",
        "1:2.4.6-0ubuntu6",
        "1:2.4.8-1ubuntu1",
        "1:2.4.8-2",
        "1:2.4.9-1",
        "1:2.4.9-1ubuntu1",
        "1:2.4.9-1ubuntu2"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "mongodb",
            "binary_version": "1:2.6.10-0ubuntu1+esm2"
          },
          {
            "binary_name": "mongodb-clients",
            "binary_version": "1:2.6.10-0ubuntu1+esm2"
          },
          {
            "binary_name": "mongodb-server",
            "binary_version": "1:2.6.10-0ubuntu1+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "mongodb",
        "purl": "pkg:deb/ubuntu/mongodb@1:2.6.10-0ubuntu1+esm2?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:2.6.10-0ubuntu1+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:2.6.10-0ubuntu1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2018-20802",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "mongodb",
            "binary_version": "1:3.6.3-0ubuntu1.4+esm1"
          },
          {
            "binary_name": "mongodb-clients",
            "binary_version": "1:3.6.3-0ubuntu1.4+esm1"
          },
          {
            "binary_name": "mongodb-server",
            "binary_version": "1:3.6.3-0ubuntu1.4+esm1"
          },
          {
            "binary_name": "mongodb-server-core",
            "binary_version": "1:3.6.3-0ubuntu1.4+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "mongodb",
        "purl": "pkg:deb/ubuntu/mongodb@1:3.6.3-0ubuntu1.4+esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:3.6.3-0ubuntu1.4+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:3.4.7-1",
        "1:3.4.7-1ubuntu1",
        "1:3.4.7-1ubuntu2",
        "1:3.4.7-1ubuntu4",
        "1:3.4.14-3ubuntu1",
        "1:3.4.14-3ubuntu2",
        "1:3.6.3-0ubuntu1",
        "1:3.6.3-0ubuntu1.1",
        "1:3.6.3-0ubuntu1.3",
        "1:3.6.3-0ubuntu1.4"
      ]
    }
  ],
  "aliases": [],
  "details": "Eliot Horowitz discovered that MongoDB may fail to validate some instances\nof malformed BSON. A remote attacker could possibly use this issue to cause\nMongoDB to crash, resulting in a denial of service. This issue only\naffected Ubuntu 14.04 LTS. (CVE-2015-1609)\n\nIt was discovered that MongoDB read raw permissions from .dbshell history\nfiles. A local attacker could possibly use this issue to obtain sensitive\ninformation. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04\nLTS. (CVE-2016-6494)\n\nTravis Brown discovered that MongoDB may be unable to parse specially\ncrafted UTF-8 strings in BSON requests. A remote attacker could possibly\nuse this issue to cause MongoDB to crash, resulting in a denial of service.\nThis issue only affected Ubuntu 18.04 LTS. (CVE-2018-20802)",
  "id": "USN-8064-1",
  "modified": "2026-06-25T10:47:32Z",
  "published": "2026-02-25T16:46:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8064-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-20802"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "mongodb vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2018-20802"
  ]
}

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.

Action not permitted

ubuntu-cve-2018-20802

Vulnerability from osv_ubuntu

CVE-2018-20802 (GCVE-0-2018-20802)

usn-8064-1

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature