{"dataType": "CVE_RECORD", "dataVersion": "5.0", "cveMetadata": {"cveId": "CVE-2023-39959", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2023-08-07T16:27:27.076Z", "datePublished": "2023-08-10T17:07:42.367Z", "dateUpdated": "2023-08-10T17:11:48.800Z"}, "containers": {"cna": {"title": "Existence of calendars and address books can be checked by unauthenticated users", "problemTypes": [{"descriptions": [{"cweId": "CWE-284", "lang": "en", "description": "CWE-284: Improper Access Control", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 3.5, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj"}, {"name": "https://github.com/nextcloud/server/pull/38747", "tags": ["x_refsource_MISC"], "url": "https://github.com/nextcloud/server/pull/38747"}, {"name": "https://hackerone.com/reports/1832126", "tags": ["x_refsource_MISC"], "url": "https://hackerone.com/reports/1832126"}], "affected": [{"vendor": "nextcloud", "product": "security-advisories", "versions": [{"version": ">= 25.0.0, < 25.0.9", "status": "affected"}, {"version": ">= 26.0.0, < 26.0.4", "status": "affected"}, {"version": ">= 27.0.0, < 27.0.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2023-08-10T17:11:48.800Z"}, "descriptions": [{"lang": "en", "value": "Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.9, 26.0.4, and 27.0.1, unauthenticated users could send a DAV request which reveals whether a calendar or an address book with the given identifier exists for the victim. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available."}], "source": {"advisory": "GHSA-g97r-8ffm-hfpj", "discovery": "UNKNOWN"}}}}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*", "matchCriteriaId": "623D58E0-57A0-42B3-8ED6-DF3B988633AB", "versionEndExcluding": "25.0.9", "versionStartIncluding": "25.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*", "matchCriteriaId": "D60D3184-C289-49E8-9FBE-EDA8B927131A", "versionEndExcluding": "25.0.9", "versionStartIncluding": "25.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*", "matchCriteriaId": "CA187E45-EB4B-468A-9291-FD66B360B2D6", "versionEndExcluding": "26.0.4", "versionStartIncluding": "26.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*", "matchCriteriaId": "2D0FA653-A595-4EC8-9F77-0AD1A4699B07", "versionEndExcluding": "26.0.4", "versionStartIncluding": "26.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:27.0.0:*:*:*:-:*:*:*", "matchCriteriaId": "13650329-BCD1-4FDB-9446-5133C0EDC905", "vulnerable": true}, {"criteria": "cpe:2.3:a:nextcloud:nextcloud_server:27.0.0:*:*:*:enterprise:*:*:*", "matchCriteriaId": "DB1974B0-31C5-4E22-9E8C-BD40C6B54D0C", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.9, 26.0.4, and 27.0.1, unauthenticated users could send a DAV request which reveals whether a calendar or an address book with the given identifier exists for the victim. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available."}], "id": "CVE-2023-39959", "lastModified": "2023-08-16T16:51:48.643", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 3.5, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2023-08-10T18:15:10.157", "references": [{"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g97r-8ffm-hfpj"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/nextcloud/server/pull/38747"}, {"source": "security-advisories@github.com", "tags": ["Permissions Required"], "url": "https://hackerone.com/reports/1832126"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-284"}], "source": "security-advisories@github.com", "type": "Primary"}]}

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