cve-2021-26559
Vulnerability from cvelistv5
Published
2021-02-17 14:15
Modified
2025-02-13 16:27
Severity ?
EPSS score ?
0.30% (0.52534)
Summary
Improper Access Control on Configurations Endpoint for the Stable API of Apache Airflow allows users with Viewer or User role to get Airflow Configurations including sensitive information even when `[webserver] expose_config` is set to `False` in `airflow.cfg`. This allowed a privilege escalation attack. This issue affects Apache Airflow 2.0.0.
Impacted products
Vendor Product Version
Apache Software Foundation Apache Airflow Version: Apache Airflow 2.0.0
Create a notification for this product.
Show details on NVD website


{
   containers: {
      adp: [
         {
            providerMetadata: {
               dateUpdated: "2024-08-03T20:26:25.506Z",
               orgId: "af854a3a-2127-422b-91ae-364da2661108",
               shortName: "CVE",
            },
            references: [
               {
                  tags: [
                     "x_refsource_MISC",
                     "x_transferred",
                  ],
                  url: "https://lists.apache.org/thread.html/r3b3787700279ec361308cbefb7c2cce2acb26891a12ce864e4a13c8d%40%3Cusers.airflow.apache.org%3E",
               },
               {
                  name: "[oss-security] 20210217 CVE-2021-26559: Apache Airflow 2.0.0: CWE-284 Improper Access Control on Configurations Endpoint for the Stable API",
                  tags: [
                     "mailing-list",
                     "x_refsource_MLIST",
                     "x_transferred",
                  ],
                  url: "http://www.openwall.com/lists/oss-security/2021/02/17/1",
               },
               {
                  name: "[announce] 20210217 CVE-2021-26559: Apache Airflow: CWE-284 Privilege Escalation Attack",
                  tags: [
                     "mailing-list",
                     "x_refsource_MLIST",
                     "x_transferred",
                  ],
                  url: "https://lists.apache.org/thread.html/rd142565996d7ee847b9c14b8a9921dcf80bc6bc160e3d9dca6dfc2f8%40%3Cannounce.apache.org%3E",
               },
            ],
            title: "CVE Program Container",
         },
      ],
      cna: {
         affected: [
            {
               product: "Apache Airflow",
               vendor: "Apache Software Foundation",
               versions: [
                  {
                     status: "affected",
                     version: "Apache Airflow 2.0.0",
                  },
               ],
            },
         ],
         credits: [
            {
               lang: "en",
               value: "Apache Airflow would like to thank Ian Carroll for reporting this issue.",
            },
         ],
         descriptions: [
            {
               lang: "en",
               value: "Improper Access Control on Configurations Endpoint for the Stable API of Apache Airflow allows users with Viewer or User role to get Airflow Configurations including sensitive information even when `[webserver] expose_config` is set to `False` in `airflow.cfg`. This allowed a privilege escalation attack. This issue affects Apache Airflow 2.0.0.",
            },
         ],
         problemTypes: [
            {
               descriptions: [
                  {
                     cweId: "CWE-284",
                     description: "CWE-284 Improper Access Control on Configurations Endpoint for the Stable API",
                     lang: "en",
                     type: "CWE",
                  },
               ],
            },
         ],
         providerMetadata: {
            dateUpdated: "2024-08-03T20:28:08.000Z",
            orgId: "f0158376-9dc2-43b6-827c-5f631a4d8d09",
            shortName: "apache",
         },
         references: [
            {
               tags: [
                  "x_refsource_MISC",
               ],
               url: "https://lists.apache.org/thread.html/r3b3787700279ec361308cbefb7c2cce2acb26891a12ce864e4a13c8d%40%3Cusers.airflow.apache.org%3E",
            },
            {
               name: "[oss-security] 20210217 CVE-2021-26559: Apache Airflow 2.0.0: CWE-284 Improper Access Control on Configurations Endpoint for the Stable API",
               tags: [
                  "mailing-list",
                  "x_refsource_MLIST",
               ],
               url: "http://www.openwall.com/lists/oss-security/2021/02/17/1",
            },
            {
               name: "[announce] 20210217 CVE-2021-26559: Apache Airflow: CWE-284 Privilege Escalation Attack",
               tags: [
                  "mailing-list",
                  "x_refsource_MLIST",
               ],
               url: "https://lists.apache.org/thread.html/rd142565996d7ee847b9c14b8a9921dcf80bc6bc160e3d9dca6dfc2f8%40%3Cannounce.apache.org%3E",
            },
         ],
         source: {
            discovery: "UNKNOWN",
         },
         title: "CWE-284 Improper Access Control on Configurations Endpoint for the Stable API",
         workarounds: [
            {
               lang: "en",
               value: "Upgrade to Airflow 2.0.1 or remove `can read on Configurations` permission from the roles like Viewer and Users if you want to restrict users with those roles to view configurations in 2.0.0.",
            },
         ],
         x_generator: {
            engine: "Vulnogram 0.0.9",
         },
         x_legacyV4Record: {
            CVE_data_meta: {
               ASSIGNER: "security@apache.org",
               ID: "CVE-2021-26559",
               STATE: "PUBLIC",
               TITLE: "CWE-284 Improper Access Control on Configurations Endpoint for the Stable API",
            },
            affects: {
               vendor: {
                  vendor_data: [
                     {
                        product: {
                           product_data: [
                              {
                                 product_name: "Apache Airflow",
                                 version: {
                                    version_data: [
                                       {
                                          version_affected: "=",
                                          version_name: "Apache Airflow",
                                          version_value: "2.0.0",
                                       },
                                    ],
                                 },
                              },
                           ],
                        },
                        vendor_name: "Apache Software Foundation",
                     },
                  ],
               },
            },
            credit: [
               {
                  lang: "eng",
                  value: "Apache Airflow would like to thank Ian Carroll for reporting this issue.",
               },
            ],
            data_format: "MITRE",
            data_type: "CVE",
            data_version: "4.0",
            description: {
               description_data: [
                  {
                     lang: "eng",
                     value: "Improper Access Control on Configurations Endpoint for the Stable API of Apache Airflow allows users with Viewer or User role to get Airflow Configurations including sensitive information even when `[webserver] expose_config` is set to `False` in `airflow.cfg`. This allowed a privilege escalation attack. This issue affects Apache Airflow 2.0.0.",
                  },
               ],
            },
            generator: {
               engine: "Vulnogram 0.0.9",
            },
            problemtype: {
               problemtype_data: [
                  {
                     description: [
                        {
                           lang: "eng",
                           value: "CWE-284 Improper Access Control on Configurations Endpoint for the Stable API",
                        },
                     ],
                  },
               ],
            },
            references: {
               reference_data: [
                  {
                     name: "https://lists.apache.org/thread.html/r3b3787700279ec361308cbefb7c2cce2acb26891a12ce864e4a13c8d%40%3Cusers.airflow.apache.org%3E",
                     refsource: "MISC",
                     url: "https://lists.apache.org/thread.html/r3b3787700279ec361308cbefb7c2cce2acb26891a12ce864e4a13c8d%40%3Cusers.airflow.apache.org%3E",
                  },
                  {
                     name: "[oss-security] 20210217 CVE-2021-26559: Apache Airflow 2.0.0: CWE-284 Improper Access Control on Configurations Endpoint for the Stable API",
                     refsource: "MLIST",
                     url: "http://www.openwall.com/lists/oss-security/2021/02/17/1",
                  },
                  {
                     name: "[announce] 20210217 CVE-2021-26559: Apache Airflow: CWE-284 Privilege Escalation Attack",
                     refsource: "MLIST",
                     url: "https://lists.apache.org/thread.html/rd142565996d7ee847b9c14b8a9921dcf80bc6bc160e3d9dca6dfc2f8@%3Cannounce.apache.org%3E",
                  },
               ],
            },
            source: {
               discovery: "UNKNOWN",
            },
            work_around: [
               {
                  lang: "en",
                  value: "Upgrade to Airflow 2.0.1 or remove `can read on Configurations` permission from the roles like Viewer and Users if you want to restrict users with those roles to view configurations in 2.0.0.",
               },
            ],
         },
      },
   },
   cveMetadata: {
      assignerOrgId: "f0158376-9dc2-43b6-827c-5f631a4d8d09",
      assignerShortName: "apache",
      cveId: "CVE-2021-26559",
      datePublished: "2021-02-17T14:15:14.000Z",
      dateReserved: "2021-02-02T00:00:00.000Z",
      dateUpdated: "2025-02-13T16:27:54.002Z",
      state: "PUBLISHED",
   },
   dataType: "CVE_RECORD",
   dataVersion: "5.1",
   "vulnerability-lookup:meta": {
      nvd: "{\"cve\":{\"id\":\"CVE-2021-26559\",\"sourceIdentifier\":\"security@apache.org\",\"published\":\"2021-02-17T15:15:13.500\",\"lastModified\":\"2024-11-21T05:56:28.070\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Improper Access Control on Configurations Endpoint for the Stable API of Apache Airflow allows users with Viewer or User role to get Airflow Configurations including sensitive information even when `[webserver] expose_config` is set to `False` in `airflow.cfg`. This allowed a privilege escalation attack. This issue affects Apache Airflow 2.0.0.\"},{\"lang\":\"es\",\"value\":\"Un Control de Acceso Inapropiado en el Endpoint Configurations para la API Stable de Apache Airflow permite a usuarios con rol de Visualizadores o Usuario obtener Configuraciones de Airflow, incluyendo información confidencial, incluso cuando \\\"[webserver] expose_config\\\" está configurado como \\\"False\\\" en \\\"airflow.cfg\\\". Esto permitió un ataque de escalada de privilegios. Este problema afecta a Apache Airflow versión 2.0.0\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:S/C:P/I:N/A:N\",\"baseScore\":4.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"SINGLE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"security@apache.org\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-284\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-Other\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:airflow:2.0.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6A12F59D-265C-4E88-A7A9-0A972A45408D\"}]}]}],\"references\":[{\"url\":\"http://www.openwall.com/lists/oss-security/2021/02/17/1\",\"source\":\"security@apache.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.apache.org/thread.html/r3b3787700279ec361308cbefb7c2cce2acb26891a12ce864e4a13c8d%40%3Cusers.airflow.apache.org%3E\",\"source\":\"security@apache.org\",\"tags\":[\"Mailing List\",\"Vendor Advisory\"]},{\"url\":\"https://lists.apache.org/thread.html/rd142565996d7ee847b9c14b8a9921dcf80bc6bc160e3d9dca6dfc2f8%40%3Cannounce.apache.org%3E\",\"source\":\"security@apache.org\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2021/02/17/1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.apache.org/thread.html/r3b3787700279ec361308cbefb7c2cce2acb26891a12ce864e4a13c8d%40%3Cusers.airflow.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Vendor Advisory\"]},{\"url\":\"https://lists.apache.org/thread.html/rd142565996d7ee847b9c14b8a9921dcf80bc6bc160e3d9dca6dfc2f8%40%3Cannounce.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
   },
}


Log in or create an account to share your comment.

Security Advisory comment format.

This schema specifies the format of a comment related to a security advisory.

UUIDv4 of the comment
UUIDv4 of the Vulnerability-Lookup instance
When the comment was created originally
When the comment was last updated
Title of the comment
Description of the comment
The identifier of the vulnerability (CVE ID, GHSA-ID, PYSEC ID, etc.).



Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

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.