CVE-2021-31553
Vulnerability from cvelistv5
Published
2021-04-22 02:29
Modified
2024-08-03 23:03
Severity ?
Summary
An issue was discovered in the CheckUser extension for MediaWiki through 1.35.2. MediaWiki usernames with trailing whitespace could be stored in the cu_log database table such that denial of service occurred for certain CheckUser extension pages and functionality. For example, the attacker could turn off Special:CheckUserLog and thus interfere with usage tracking.
References
cve@mitre.orghttps://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666963Issue Tracking, Third Party Advisory
cve@mitre.orghttps://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666964Issue Tracking, Third Party Advisory
cve@mitre.orghttps://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667023Issue Tracking, Third Party Advisory
cve@mitre.orghttps://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667024Issue Tracking, Third Party Advisory
cve@mitre.orghttps://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667025Issue Tracking, Third Party Advisory
cve@mitre.orghttps://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667027Issue Tracking, Third Party Advisory
cve@mitre.orghttps://phabricator.wikimedia.org/T275669Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666963Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666964Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667023Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667024Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667025Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667027Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://phabricator.wikimedia.org/T275669Third Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T23:03:33.430Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://phabricator.wikimedia.org/T275669"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667023"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667024"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667025"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667027"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666963"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666964"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in the CheckUser extension for MediaWiki through 1.35.2. MediaWiki usernames with trailing whitespace could be stored in the cu_log database table such that denial of service occurred for certain CheckUser extension pages and functionality. For example, the attacker could turn off Special:CheckUserLog and thus interfere with usage tracking."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-04-22T02:29:31",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://phabricator.wikimedia.org/T275669"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667023"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667024"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667025"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667027"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666963"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666964"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-31553",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "An issue was discovered in the CheckUser extension for MediaWiki through 1.35.2. MediaWiki usernames with trailing whitespace could be stored in the cu_log database table such that denial of service occurred for certain CheckUser extension pages and functionality. For example, the attacker could turn off Special:CheckUserLog and thus interfere with usage tracking."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://phabricator.wikimedia.org/T275669",
              "refsource": "MISC",
              "url": "https://phabricator.wikimedia.org/T275669"
            },
            {
              "name": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667023",
              "refsource": "MISC",
              "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667023"
            },
            {
              "name": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667024",
              "refsource": "MISC",
              "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667024"
            },
            {
              "name": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667025",
              "refsource": "MISC",
              "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667025"
            },
            {
              "name": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667027",
              "refsource": "MISC",
              "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667027"
            },
            {
              "name": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666963",
              "refsource": "MISC",
              "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666963"
            },
            {
              "name": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666964",
              "refsource": "MISC",
              "url": "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666964"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-31553",
    "datePublished": "2021-04-22T02:29:31",
    "dateReserved": "2021-04-22T00:00:00",
    "dateUpdated": "2024-08-03T23:03:33.430Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-31553\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2021-04-22T03:15:08.197\",\"lastModified\":\"2024-11-21T06:05:54.167\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An issue was discovered in the CheckUser extension for MediaWiki through 1.35.2. MediaWiki usernames with trailing whitespace could be stored in the cu_log database table such that denial of service occurred for certain CheckUser extension pages and functionality. For example, the attacker could turn off Special:CheckUserLog and thus interfere with usage tracking.\"},{\"lang\":\"es\",\"value\":\"Se detect\u00f3 un problema en la extensi\u00f3n CheckUser para MediaWiki versiones hasta 1.35.2.\u0026#xa0;Unos nombres de usuario de MediaWiki con espacios en blanco al final podr\u00edan ser almacenados en la tabla de la base de datos cu_log de manera que se produjera una denegaci\u00f3n de servicio para determinadas p\u00e1ginas de extensi\u00f3n y funcionalidad CheckUser.\u0026#xa0;Por ejemplo, el atacante podr\u00eda desactivar Special: CheckUserLog y as\u00ed interferir con el seguimiento del uso\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":3.9,\"impactScore\":2.5}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:N/I:P/A:P\",\"baseScore\":6.4,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":4.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-428\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"1.35.2\",\"matchCriteriaId\":\"4067807D-769C-485F-A7E3-EE96885BDCE7\"}]}]}],\"references\":[{\"url\":\"https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666963\",\"source\":\"cve@mitre.org\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666964\",\"source\":\"cve@mitre.org\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667023\",\"source\":\"cve@mitre.org\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667024\",\"source\":\"cve@mitre.org\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667025\",\"source\":\"cve@mitre.org\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667027\",\"source\":\"cve@mitre.org\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://phabricator.wikimedia.org/T275669\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666963\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/666964\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667023\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667024\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667025\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/667027\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://phabricator.wikimedia.org/T275669\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.