GSD-2021-29621

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
Flask-AppBuilder is a development framework, built on top of Flask. User enumeration in database authentication in Flask-AppBuilder <= 3.2.3. Allows for a non authenticated user to enumerate existing accounts by timing the response time from the server when you are logging in. Upgrade to version 3.3.0 or higher to resolve.
Aliases
Aliases
CVE-2021-29621
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{
  "GSD": {
    "alias": "CVE-2021-29621",
    "description": "Flask-AppBuilder is a development framework, built on top of Flask. User enumeration in database authentication in Flask-AppBuilder \u003c= 3.2.3. Allows for a non authenticated user to enumerate existing accounts by timing the response time from the server when you are logging in. Upgrade to version 3.3.0 or higher to resolve.",
    "id": "GSD-2021-29621"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-29621"
      ],
      "details": "Flask-AppBuilder is a development framework, built on top of Flask. User enumeration in database authentication in Flask-AppBuilder \u003c= 3.2.3. Allows for a non authenticated user to enumerate existing accounts by timing the response time from the server when you are logging in. Upgrade to version 3.3.0 or higher to resolve.",
      "id": "GSD-2021-29621",
      "modified": "2023-12-13T01:23:36.537545Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
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        "ID": "CVE-2021-29621",
        "STATE": "PUBLIC",
        "TITLE": "Observable Response Discrepancy in Flask-AppBuilder"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Flask-AppBuilder",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c 3.3.0"
                        }
                      ]
                    }
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              },
              "vendor_name": "dpgaspar"
            }
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            "value": "Flask-AppBuilder is a development framework, built on top of Flask. User enumeration in database authentication in Flask-AppBuilder \u003c= 3.2.3. Allows for a non authenticated user to enumerate existing accounts by timing the response time from the server when you are logging in. Upgrade to version 3.3.0 or higher to resolve."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-203: Observable Discrepancy"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-434h-p4gx-jm89",
            "refsource": "CONFIRM",
            "url": "https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-434h-p4gx-jm89"
          },
          {
            "name": "https://github.com/dpgaspar/Flask-AppBuilder/commit/780bd0e8fbf2d36ada52edb769477e0a4edae580",
            "refsource": "MISC",
            "url": "https://github.com/dpgaspar/Flask-AppBuilder/commit/780bd0e8fbf2d36ada52edb769477e0a4edae580"
          },
          {
            "name": "https://pypi.org/project/Flask-AppBuilder/",
            "refsource": "MISC",
            "url": "https://pypi.org/project/Flask-AppBuilder/"
          },
          {
            "name": "[announce] 20210618 Apache Airflow CVE: CVE-2021-29621: User enumeration in database authentication in Flask-AppBuilder \u003c= 3.2.3.",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/r5b754118ba4e996adf03863705d34168bffec202da5c6bdc9bf3add5@%3Cannounce.apache.org%3E"
          },
          {
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          },
          {
            "name": "[airflow-commits] 20210712 [GitHub] [airflow] ashb commented on pull request #16942: Relax version constraint on ``Flask-Appbuilder``",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/r91067f953906d93aaa1c69fe2b5472754019cc6bd4f1ba81349d62a0@%3Ccommits.airflow.apache.org%3E"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-434h-p4gx-jm89",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c=3.2.3",
          "affected_versions": "All versions up to 3.2.3",
          "cvss_v2": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-203",
            "CWE-937"
          ],
          "date": "2021-08-06",
          "description": "Flask-AppBuilder is a development framework, built on top of Flask. User enumeration in database authentication in Flask-AppBuilder Allows for a non authenticated user to enumerate existing accounts by timing the response time from the server when you are logging in.",
          "fixed_versions": [
            "3.3.0"
          ],
          "identifier": "CVE-2021-29621",
          "identifiers": [
            "CVE-2021-29621",
            "GHSA-434h-p4gx-jm89"
          ],
          "not_impacted": "All versions after 3.2.3",
          "package_slug": "pypi/Flask-AppBuilder",
          "pubdate": "2021-06-07",
          "solution": "Upgrade to version 3.3.0 or above.",
          "title": "Information Exposure Through Discrepancy",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-29621"
          ],
          "uuid": "3e11a967-431b-475c-9088-a08d8fb54650"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:flask-appbuilder_project:flask-appbuilder:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "3.2.3",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:apache:airflow:1.10.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
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        "description": {
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              "value": "Flask-AppBuilder is a development framework, built on top of Flask. User enumeration in database authentication in Flask-AppBuilder \u003c= 3.2.3. Allows for a non authenticated user to enumerate existing accounts by timing the response time from the server when you are logging in. Upgrade to version 3.3.0 or higher to resolve."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
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              "description": [
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                  "value": "CWE-203"
                },
                {
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                  "value": "CWE-203"
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        "references": {
          "reference_data": [
            {
              "name": "https://github.com/dpgaspar/Flask-AppBuilder/commit/780bd0e8fbf2d36ada52edb769477e0a4edae580",
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              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/dpgaspar/Flask-AppBuilder/commit/780bd0e8fbf2d36ada52edb769477e0a4edae580"
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              "url": "https://pypi.org/project/Flask-AppBuilder/"
            },
            {
              "name": "[announce] 20210618 Apache Airflow CVE: CVE-2021-29621: User enumeration in database authentication in Flask-AppBuilder \u003c= 3.2.3.",
              "refsource": "MLIST",
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              ],
              "url": "https://lists.apache.org/thread.html/r5b754118ba4e996adf03863705d34168bffec202da5c6bdc9bf3add5@%3Cannounce.apache.org%3E"
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            },
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              "name": "[airflow-commits] 20210712 [GitHub] [airflow] ashb commented on pull request #16942: Relax version constraint on ``Flask-Appbuilder``",
              "refsource": "MLIST",
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              ],
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            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 1.4
        }
      },
      "lastModifiedDate": "2021-08-06T18:16Z",
      "publishedDate": "2021-06-07T19:15Z"
    }
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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Detection rules are retrieved from Rulezet.