{"dataType": "CVE_RECORD", "dataVersion": "5.0", "cveMetadata": {"cveId": "CVE-2023-28999", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2023-03-29T17:39:16.141Z", "datePublished": "2023-04-04T12:51:08.241Z", "dateUpdated": "2023-04-04T12:51:08.241Z"}, "containers": {"cna": {"title": "Nextcloud: Lack of authenticity of metadata keys allows a malicious server to gain access to E2EE folders", "problemTypes": [{"descriptions": [{"cweId": "CWE-325", "lang": "en", "description": "CWE-325: Missing Cryptographic Step", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "PHYSICAL", "availabilityImpact": "LOW", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8"}, {"name": "https://github.com/nextcloud/desktop/pull/5560", "tags": ["x_refsource_MISC"], "url": "https://github.com/nextcloud/desktop/pull/5560"}, {"name": "https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf", "tags": ["x_refsource_MISC"], "url": "https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf"}], "affected": [{"vendor": "nextcloud", "product": "security-advisories", "versions": [{"version": ">= 3.0.0, < 3.8.0", "status": "affected"}, {"version": ">= 3.13.0, < 3.25.0", "status": "affected"}, {"version": ">= 3.0.5, < 4.8.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2023-04-04T12:51:08.241Z"}, "descriptions": [{"lang": "en", "value": "Nextcloud is an open-source productivity platform. In Nextcloud Desktop client 3.0.0 until 3.8.0, Nextcloud Android app 3.13.0 until 3.25.0, and Nextcloud iOS app 3.0.5 until 4.8.0, a malicious server administrator can gain full access to an end-to-end encrypted folder. They can decrypt files, recover the folder structure and add new files.\u200b This issue is fixed in Nextcloud Desktop 3.8.0, Nextcloud Android 3.25.0, and Nextcloud iOS 4.8.0. No known workarounds are available."}], "source": {"advisory": "GHSA-8875-wxww-3rr8", "discovery": "UNKNOWN"}}}}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:nextcloud:desktop:*:*:*:*:*:*:*:*", "matchCriteriaId": "F4EEF1B4-66BE-4127-A87F-E92ACCF8897D", "versionEndExcluding": "3.8.0", "versionStartIncluding": "3.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:iphone_os:*:*:*", "matchCriteriaId": "CAC80EF2-7FAF-4730-938F-3F5D3C137F24", "versionEndExcluding": "4.8.0", "versionStartIncluding": "3.0.5", "vulnerable": true}, {"criteria": "cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:android:*:*:*", "matchCriteriaId": "012EE253-E69E-406B-8B84-D04F13940620", "versionEndExcluding": "3.25.0", "versionStartIncluding": "3.13.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "Nextcloud is an open-source productivity platform. In Nextcloud Desktop client 3.0.0 until 3.8.0, Nextcloud Android app 3.13.0 until 3.25.0, and Nextcloud iOS app 3.0.5 until 4.8.0, a malicious server administrator can gain full access to an end-to-end encrypted folder. They can decrypt files, recover the folder structure and add new files.\u200b This issue is fixed in Nextcloud Desktop 3.8.0, Nextcloud Android 3.25.0, and Nextcloud iOS 4.8.0. No known workarounds are available."}], "id": "CVE-2023-28999", "lastModified": "2023-11-07T04:10:59.817", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 0.9, "impactScore": 5.5, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "PHYSICAL", "availabilityImpact": "LOW", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 0.4, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2023-04-04T13:15:09.003", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Technical Description", "Third Party Advisory"], "url": "https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf"}, {"source": "security-advisories@github.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://github.com/nextcloud/desktop/pull/5560"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-311"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-325"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

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