GSD-2021-38540

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
The variable import endpoint was not protected by authentication in Airflow >=2.0.0, <2.1.3. This allowed unauthenticated users to hit that endpoint to add/modify Airflow variables used in DAGs, potentially resulting in a denial of service, information disclosure or remote code execution. This issue affects Apache Airflow >=2.0.0, <2.1.3.
Aliases
Aliases
CVE-2021-38540
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{
  "GSD": {
    "alias": "CVE-2021-38540",
    "description": "The variable import endpoint was not protected by authentication in Airflow \u003e=2.0.0, \u003c2.1.3. This allowed unauthenticated users to hit that endpoint to add/modify Airflow variables used in DAGs, potentially resulting in a denial of service, information disclosure or remote code execution. This issue affects Apache Airflow \u003e=2.0.0, \u003c2.1.3.",
    "id": "GSD-2021-38540"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-38540"
      ],
      "details": "The variable import endpoint was not protected by authentication in Airflow \u003e=2.0.0, \u003c2.1.3. This allowed unauthenticated users to hit that endpoint to add/modify Airflow variables used in DAGs, potentially resulting in a denial of service, information disclosure or remote code execution. This issue affects Apache Airflow \u003e=2.0.0, \u003c2.1.3.",
      "id": "GSD-2021-38540",
      "modified": "2023-12-13T01:23:17.517135Z",
      "schema_version": "1.4.0"
    }
  },
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        "ASSIGNER": "security@apache.org",
        "ID": "CVE-2021-38540",
        "STATE": "PUBLIC",
        "TITLE": "Apache Airflow: Variable Import endpoint missed authentication check"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Apache Airflow",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "Apache Airflow ",
                          "version_value": "2.1.3"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Apache Software Foundation"
            }
          ]
        }
      },
      "credit": [
        {
          "lang": "eng",
          "value": "Apache Airflow would like to thank Nathan Jones, National Australia Bank\u2019s Offensive Security Team"
        }
      ],
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            "value": "The variable import endpoint was not protected by authentication in Airflow \u003e=2.0.0, \u003c2.1.3. This allowed unauthenticated users to hit that endpoint to add/modify Airflow variables used in DAGs, potentially resulting in a denial of service, information disclosure or remote code execution. This issue affects Apache Airflow \u003e=2.0.0, \u003c2.1.3."
          }
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                "value": "CWE-269 Improper Privilege Management"
              }
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      },
      "references": {
        "reference_data": [
          {
            "name": "https://lists.apache.org/thread.html/rb34c3dd1a815456355217eef34060789f771b6f77c3a3dec77de2064%40%3Cusers.airflow.apache.org%3E",
            "refsource": "MISC",
            "url": "https://lists.apache.org/thread.html/rb34c3dd1a815456355217eef34060789f771b6f77c3a3dec77de2064%40%3Cusers.airflow.apache.org%3E"
          },
          {
            "name": "[announce] 20210909 CVE-2021-38540: Apache Airflow: Variable Import endpoint missed authentication check",
            "refsource": "MLIST",
            "url": "https://lists.apache.org/thread.html/rac2ed9118f64733e47b4f1e82ddc8c8020774698f13328ca742b03a2@%3Cannounce.apache.org%3E"
          }
        ]
      },
      "source": {
        "discovery": "UNKNOWN"
      },
      "work_around": [
        {
          "lang": "eng",
          "value": "Upgrade to Apache Airflow \u003e=2.1.3"
        }
      ]
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003e=2.0.0,\u003c2.1.3",
          "affected_versions": "All versions starting from 2.0.0 before 2.1.3",
          "cvss_v2": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-937"
          ],
          "date": "2021-09-21",
          "description": "The variable import endpoint was not protected by authentication in Airflow This allowed unauthenticated users to hit that endpoint to add/modify Airflow variables used in DAGs, potentially resulting in a denial of service, information disclosure or remote code execution.",
          "fixed_versions": [
            "2.1.3"
          ],
          "identifier": "CVE-2021-38540",
          "identifiers": [
            "CVE-2021-38540"
          ],
          "not_impacted": "All versions before 2.0.0, all versions starting from 2.1.3",
          "package_slug": "pypi/apache-airflow",
          "pubdate": "2021-09-09",
          "solution": "Upgrade to version 2.1.3 or above.",
          "title": "Missing Authentication for Critical Function",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-38540"
          ],
          "uuid": "f5d34084-2169-4244-b716-ccee3ac371bf"
        }
      ]
    },
    "nvd.nist.gov": {
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                "cpe23Uri": "cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2.1.3",
                "versionStartIncluding": "2.0.0",
                "vulnerable": true
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        "description": {
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              "value": "The variable import endpoint was not protected by authentication in Airflow \u003e=2.0.0, \u003c2.1.3. This allowed unauthenticated users to hit that endpoint to add/modify Airflow variables used in DAGs, potentially resulting in a denial of service, information disclosure or remote code execution. This issue affects Apache Airflow \u003e=2.0.0, \u003c2.1.3."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
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                  "value": "CWE-306"
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        "references": {
          "reference_data": [
            {
              "name": "N/A",
              "refsource": "CONFIRM",
              "tags": [
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            },
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            }
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 7.5,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2021-09-21T13:56Z",
      "publishedDate": "2021-09-09T15:15Z"
    }
  }
}



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