CVE-2021-38540

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.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://lists.apache.org/thread.html/rac2ed9118f64733e47b4f1e82ddc8c8020774698f13328ca742b03a2%40%3Cannounce.apache.org%3E
https://lists.apache.org/thread.html/rb34c3dd1a815456355217eef34060789f771b6f77c3a3dec77de2064%40%3Cusers.airflow.apache.org%3E	Mailing List Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-09-09 15:15

Updated : 2023-11-07 03:37

NVD link : CVE-2021-38540

Mitre link : CVE-2021-38540

CVE.ORG link : CVE-2021-38540

JSON object : View

Products Affected

apache

airflow

CWE

CWE-306

Missing Authentication for Critical Function

CWE-269

Improper Privilege Management

{"id": "CVE-2021-38540", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2021-09-09T15:15:09.170", "references": [{"url": "https://lists.apache.org/thread.html/rac2ed9118f64733e47b4f1e82ddc8c8020774698f13328ca742b03a2%40%3Cannounce.apache.org%3E", "source": "security@apache.org"}, {"url": "https://lists.apache.org/thread.html/rb34c3dd1a815456355217eef34060789f771b6f77c3a3dec77de2064%40%3Cusers.airflow.apache.org%3E", "tags": ["Mailing List", "Vendor Advisory"], "source": "security@apache.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-306"}]}, {"type": "Secondary", "source": "security@apache.org", "description": [{"lang": "en", "value": "CWE-269"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "El endpoint de importaci\u00f3n de variables no estaba protegido por autenticaci\u00f3n en Airflow versiones posteriores a 2.0.0 incluy\u00e9ndola, versiones anteriores a 2.1.3. Esto permit\u00eda a usuarios no autenticados acceder a ese endpoint para a\u00f1adir y modificar las variables de Airflow usadas en los DAG, resultando en una denegaci\u00f3n de servicio, una divulgaci\u00f3n de informaci\u00f3n o una ejecuci\u00f3n de c\u00f3digo remota. Este problema afecta a Apache Airflow versiones posteriores a 2.0.0 incluy\u00e9ndola, versiones anteriores a 2.1.3"}], "lastModified": "2023-11-07T03:37:26.450", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8DA42686-DCA0-45F1-8AB6-E56F0C9EF0C0", "versionEndExcluding": "2.1.3", "versionStartIncluding": "2.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@apache.org"}