CVE-2021-41598

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All permissions being granted would properly be shown during the first authorization, but if the user later updated the set of repositories the app was installed on after the GitHub App had configured additional user-level permissions, those additional permissions would not be displayed, leading to more permissions being granted than the user potentially intended. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.3 and was fixed in versions 3.2.5, 3.1.13, 3.0.21. This vulnerability was reported via the GitHub Bug Bounty program."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-451", "description": "CWE-451: User Interface (UI) Misrepresentation of Critical Information", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2022-01-25T19:45:12.000Z", "orgId": "82327ea3-741d-41e4-88f8-2cf9e791e760", "shortName": "GitHub_P"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.21"}, {"tags": ["x_refsource_MISC"], "url": "https://docs.github.com/en/enterprise-server%403.1/admin/release-notes#3.1.13"}, {"tags": ["x_refsource_MISC"], "url": "https://docs.github.com/en/enterprise-server%403.2/admin/release-notes#3.2.5"}], "source": {"discovery": "EXTERNAL"}, "title": "UI misrepresentation of granted permissions in GitHub Enterprise Server leading to unauthorized access to user", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "product-cna@github.com", "ID": "CVE-2021-41598", "STATE": "PUBLIC", "TITLE": "UI misrepresentation of granted permissions in GitHub Enterprise Server leading to unauthorized access to user"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "GitHub Enterprise Server", "version": {"version_data": [{"version_affected": "<", "version_name": "3.0", "version_value": "3.0.21"}, {"version_affected": "<", "version_name": "3.1", "version_value": "3.1.13"}, {"version_affected": "<", "version_name": "3.2", "version_value": "3.2.5"}]}}]}, "vendor_name": "GitHub"}]}}, "credit": [{"lang": "eng", "value": "Vaibhav Singh (vaib25vicky)"}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A UI misrepresentation vulnerability was identified in GitHub Enterprise Server that allowed more permissions to be granted during a GitHub App's user-authorization web flow than was displayed to the user during approval. To exploit this vulnerability, an attacker would need to create a GitHub App on the instance and have a user authorize the application through the web authentication flow. All permissions being granted would properly be shown during the first authorization, but if the user later updated the set of repositories the app was installed on after the GitHub App had configured additional user-level permissions, those additional permissions would not be displayed, leading to more permissions being granted than the user potentially intended. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.3 and was fixed in versions 3.2.5, 3.1.13, 3.0.21. This vulnerability was reported via the GitHub Bug Bounty program."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-451: User Interface (UI) Misrepresentation of Critical Information"}]}]}, "references": {"reference_data": [{"name": "https://docs.github.com/en/enterprise-server@3.0/admin/release-notes#3.0.21", "refsource": "MISC", "url": "https://docs.github.com/en/enterprise-server@3.0/admin/release-notes#3.0.21"}, {"name": "https://docs.github.com/en/enterprise-server@3.1/admin/release-notes#3.1.13", "refsource": "MISC", "url": "https://docs.github.com/en/enterprise-server@3.1/admin/release-notes#3.1.13"}, {"name": "https://docs.github.com/en/enterprise-server@3.2/admin/release-notes#3.2.5", "refsource": "MISC", "url": "https://docs.github.com/en/enterprise-server@3.2/admin/release-notes#3.2.5"}]}, "source": {"discovery": "EXTERNAL"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T03:15:29.207Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.21"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://docs.github.com/en/enterprise-server%403.1/admin/release-notes#3.1.13"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://docs.github.com/en/enterprise-server%403.2/admin/release-notes#3.2.5"}]}]}, "cveMetadata": {"assignerOrgId": "82327ea3-741d-41e4-88f8-2cf9e791e760", "assignerShortName": "GitHub_P", "cveId": "CVE-2021-41598", "datePublished": "2022-01-25T19:45:12.000Z", "dateReserved": "2021-09-24T00:00:00.000Z", "dateUpdated": "2024-08-04T03:15:29.207Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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To exploit this vulnerability, an attacker would need to create a GitHub App on the instance and have a user authorize the application through the web authentication flow. All permissions being granted would properly be shown during the first authorization, but if the user later updated the set of repositories the app was installed on after the GitHub App had configured additional user-level permissions, those additional permissions would not be displayed, leading to more permissions being granted than the user potentially intended. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.3 and was fixed in versions 3.2.5, 3.1.13, 3.0.21. This vulnerability was reported via the GitHub Bug Bounty program."}, {"lang": "es", "value": "Se ha identificado una vulnerabilidad de tergiversaci\u00f3n de la interfaz de usuario en GitHub Enterprise Server que permit\u00eda conceder m\u00e1s permisos durante el flujo web de autorizaci\u00f3n de usuarios de una GitHub App de los que eran mostrados al usuario durante la aprobaci\u00f3n. Para explotar esta vulnerabilidad, un atacante tendr\u00eda que crear una GitHub App en la instancia y hacer que un usuario autorice la aplicaci\u00f3n mediante el flujo de autenticaci\u00f3n web. Todos los permisos concedidos ser\u00edan mostrados correctamente durante la primera autorizaci\u00f3n, pero si el usuario actualizaba posteriormente el conjunto de repositorios en los que estaba instalada la aplicaci\u00f3n despu\u00e9s de que la aplicaci\u00f3n de GitHub hubiera configurado permisos adicionales a nivel de usuario, esos permisos adicionales no ser\u00edan mostrados, conllevando a una concesi\u00f3n de m\u00e1s permisos de los que el usuario podr\u00eda haber previsto. Esta vulnerabilidad afectaba a todas las versiones de GitHub Enterprise Server anteriores a la 3.3 y fue corregido en las versiones 3.2.5, 3.1.13 y 3.0.21. Esta vulnerabilidad fue reportada por medio del programa GitHub Bug Bounty"}], "id": "CVE-2021-41598", "lastModified": "2026-06-17T04:08:42.857", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-01-25T20:15:08.453", "references": [{"source": "product-cna@github.com", "url": "https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.21"}, {"source": "product-cna@github.com", "url": "https://docs.github.com/en/enterprise-server%403.1/admin/release-notes#3.1.13"}, {"source": "product-cna@github.com", "url": "https://docs.github.com/en/enterprise-server%403.2/admin/release-notes#3.2.5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.21"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://docs.github.com/en/enterprise-server%403.1/admin/release-notes#3.1.13"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://docs.github.com/en/enterprise-server%403.2/admin/release-notes#3.2.5"}], "sourceIdentifier": "product-cna@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-451"}], "source": "product-cna@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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