cve-2021-41239
Vulnerability from cvelistv5
Published
2022-03-08 18:05
Modified
2024-08-04 03:08
Severity ?
EPSS score ?
Summary
Nextcloud server is a self hosted system designed to provide cloud style services. In affected versions the User Status API did not consider the user enumeration settings by the administrator. This allowed a user to enumerate other users on the instance, even when user listings where disabled. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. There are no known workarounds.
References
▼ | URL | Tags | |
---|---|---|---|
security-advisories@github.com | https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx | Issue Tracking, Third Party Advisory | |
security-advisories@github.com | https://github.com/nextcloud/server/issues/27122 | Issue Tracking, Patch, Third Party Advisory | |
security-advisories@github.com | https://github.com/nextcloud/server/pull/29260 | Patch, Third Party Advisory | |
security-advisories@github.com | https://security.gentoo.org/glsa/202208-17 | Third Party Advisory | |
af854a3a-2127-422b-91ae-364da2661108 | https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx | Issue Tracking, Third Party Advisory | |
af854a3a-2127-422b-91ae-364da2661108 | https://github.com/nextcloud/server/issues/27122 | Issue Tracking, Patch, Third Party Advisory | |
af854a3a-2127-422b-91ae-364da2661108 | https://github.com/nextcloud/server/pull/29260 | Patch, Third Party Advisory | |
af854a3a-2127-422b-91ae-364da2661108 | https://security.gentoo.org/glsa/202208-17 | Third Party Advisory |
Impacted products
Vendor | Product | Version | |
---|---|---|---|
▼ | nextcloud | security-advisories |
Version: < 20.0.14 Version: >= 21.0.0, < 21.0.6 Version: >= 22.2.0, < 22.2.1 |
|
{ "containers": { "adp": [ { "providerMetadata": { "dateUpdated": "2024-08-04T03:08:31.486Z", "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE" }, "references": [ { "tags": [ "x_refsource_CONFIRM", "x_transferred" ], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://github.com/nextcloud/server/issues/27122" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://github.com/nextcloud/server/pull/29260" }, { "name": "GLSA-202208-17", "tags": [ "vendor-advisory", "x_refsource_GENTOO", "x_transferred" ], "url": "https://security.gentoo.org/glsa/202208-17" } ], "title": "CVE Program Container" } ], "cna": { "affected": [ { "product": "security-advisories", "vendor": "nextcloud", "versions": [ { "status": "affected", "version": "\u003c 20.0.14" }, { "status": "affected", "version": "\u003e= 21.0.0, \u003c 21.0.6" }, { "status": "affected", "version": "\u003e= 22.2.0, \u003c 22.2.1" } ] } ], "descriptions": [ { "lang": "en", "value": "Nextcloud server is a self hosted system designed to provide cloud style services. In affected versions the User Status API did not consider the user enumeration settings by the administrator. This allowed a user to enumerate other users on the instance, even when user listings where disabled. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. There are no known workarounds." } ], "metrics": [ { "cvssV3_1": { "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" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-200", "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2022-08-11T00:07:18", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M" }, "references": [ { "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx" }, { "tags": [ "x_refsource_MISC" ], "url": "https://github.com/nextcloud/server/issues/27122" }, { "tags": [ "x_refsource_MISC" ], "url": "https://github.com/nextcloud/server/pull/29260" }, { "name": "GLSA-202208-17", "tags": [ "vendor-advisory", "x_refsource_GENTOO" ], "url": "https://security.gentoo.org/glsa/202208-17" } ], "source": { "advisory": "GHSA-g722-cm3h-8wrx", "discovery": "UNKNOWN" }, "title": "User enumeration setting not respected in Nextcloud server", "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-41239", "STATE": "PUBLIC", "TITLE": "User enumeration setting not respected in Nextcloud server" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "security-advisories", "version": { "version_data": [ { "version_value": "\u003c 20.0.14" }, { "version_value": "\u003e= 21.0.0, \u003c 21.0.6" }, { "version_value": "\u003e= 22.2.0, \u003c 22.2.1" } ] } } ] }, "vendor_name": "nextcloud" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "Nextcloud server is a self hosted system designed to provide cloud style services. In affected versions the User Status API did not consider the user enumeration settings by the administrator. This allowed a user to enumerate other users on the instance, even when user listings where disabled. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. There are no known workarounds." } ] }, "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-200: Exposure of Sensitive Information to an Unauthorized Actor" } ] } ] }, "references": { "reference_data": [ { "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx", "refsource": "CONFIRM", "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx" }, { "name": "https://github.com/nextcloud/server/issues/27122", "refsource": "MISC", "url": "https://github.com/nextcloud/server/issues/27122" }, { "name": "https://github.com/nextcloud/server/pull/29260", "refsource": "MISC", "url": "https://github.com/nextcloud/server/pull/29260" }, { "name": "GLSA-202208-17", "refsource": "GENTOO", "url": "https://security.gentoo.org/glsa/202208-17" } ] }, "source": { "advisory": "GHSA-g722-cm3h-8wrx", "discovery": "UNKNOWN" } } } }, "cveMetadata": { "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-41239", "datePublished": "2022-03-08T18:05:12", "dateReserved": "2021-09-15T00:00:00", "dateUpdated": "2024-08-04T03:08:31.486Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "vulnerability-lookup:meta": { "fkie_nvd": { "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"20.0.14\", \"matchCriteriaId\": \"FE354750-B4B3-4F0A-8B59-472C527BC7B2\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"21.0.0\", \"versionEndExcluding\": \"21.0.6\", \"matchCriteriaId\": \"467AE8CC-B050-4A69-AD8A-88C71C69C898\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:nextcloud:nextcloud_server:22.2.0:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"0FB174BF-D3FD-49C6-B216-3166DE1AD6F9\"}]}]}]", "descriptions": "[{\"lang\": \"en\", \"value\": \"Nextcloud server is a self hosted system designed to provide cloud style services. In affected versions the User Status API did not consider the user enumeration settings by the administrator. This allowed a user to enumerate other users on the instance, even when user listings where disabled. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. There are no known workarounds.\"}, {\"lang\": \"es\", \"value\": \"Nextcloud server es un sistema auto-alojado dise\\u00f1ado para proporcionar servicios de estilo en la nube. En las versiones afectadas, la API de estado de usuario no ten\\u00eda en cuenta la configuraci\\u00f3n de enumeraci\\u00f3n de usuarios por parte del administrador. Esto permit\\u00eda a un usuario enumerar a otros usuarios en la instancia, incluso cuando los listados de usuarios estaban deshabilitados. Es recomendado actualizar el servidor Nextcloud a versiones 20.0.14, 21.0.6 o 22.2.1. No se presentan medidas de mitigaci\\u00f3n conocidas\"}]", "id": "CVE-2021-41239", "lastModified": "2024-11-21T06:25:51.250", "metrics": "{\"cvssMetricV31\": [{\"source\": \"security-advisories@github.com\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 1.4}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 1.4}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:L/Au:N/C:P/I:N/A:N\", \"baseScore\": 5.0, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"PARTIAL\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 10.0, \"impactScore\": 2.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}", "published": "2022-03-08T18:15:07.873", "references": "[{\"url\": \"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Issue Tracking\", \"Third Party Advisory\"]}, {\"url\": \"https://github.com/nextcloud/server/issues/27122\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Issue Tracking\", \"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://github.com/nextcloud/server/pull/29260\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://security.gentoo.org/glsa/202208-17\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Issue Tracking\", \"Third Party Advisory\"]}, {\"url\": \"https://github.com/nextcloud/server/issues/27122\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Issue Tracking\", \"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://github.com/nextcloud/server/pull/29260\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://security.gentoo.org/glsa/202208-17\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}]", "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": "[{\"source\": \"security-advisories@github.com\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-200\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-862\"}]}]" }, "nvd": "{\"cve\":{\"id\":\"CVE-2021-41239\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2022-03-08T18:15:07.873\",\"lastModified\":\"2024-11-21T06:25:51.250\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Nextcloud server is a self hosted system designed to provide cloud style services. In affected versions the User Status API did not consider the user enumeration settings by the administrator. This allowed a user to enumerate other users on the instance, even when user listings where disabled. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. There are no known workarounds.\"},{\"lang\":\"es\",\"value\":\"Nextcloud server es un sistema auto-alojado dise\u00f1ado para proporcionar servicios de estilo en la nube. En las versiones afectadas, la API de estado de usuario no ten\u00eda en cuenta la configuraci\u00f3n de enumeraci\u00f3n de usuarios por parte del administrador. Esto permit\u00eda a un usuario enumerar a otros usuarios en la instancia, incluso cuando los listados de usuarios estaban deshabilitados. Es recomendado actualizar el servidor Nextcloud a versiones 20.0.14, 21.0.6 o 22.2.1. No se presentan medidas de mitigaci\u00f3n conocidas\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:N/A:N\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-200\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-862\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"20.0.14\",\"matchCriteriaId\":\"FE354750-B4B3-4F0A-8B59-472C527BC7B2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"21.0.0\",\"versionEndExcluding\":\"21.0.6\",\"matchCriteriaId\":\"467AE8CC-B050-4A69-AD8A-88C71C69C898\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nextcloud:nextcloud_server:22.2.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"0FB174BF-D3FD-49C6-B216-3166DE1AD6F9\"}]}]}],\"references\":[{\"url\":\"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/nextcloud/server/issues/27122\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Issue Tracking\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/nextcloud/server/pull/29260\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://security.gentoo.org/glsa/202208-17\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/nextcloud/server/issues/27122\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/nextcloud/server/pull/29260\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://security.gentoo.org/glsa/202208-17\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}" } }
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.