{"dataType": "CVE_RECORD", "dataVersion": "5.0", "cveMetadata": {"cveId": "CVE-2023-45150", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2023-10-04T16:02:46.331Z", "datePublished": "2023-10-16T19:06:03.674Z", "dateUpdated": "2023-10-16T19:06:03.674Z"}, "containers": {"cna": {"title": "Inviting excessive long email addresses to a calendar event makes the Nextcloud server unresponsive", "problemTypes": [{"descriptions": [{"cweId": "CWE-400", "lang": "en", "description": "CWE-400: Uncontrolled Resource Consumption", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r936-8gwm-w452", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r936-8gwm-w452"}, {"name": "https://github.com/nextcloud/calendar/pull/5358", "tags": ["x_refsource_MISC"], "url": "https://github.com/nextcloud/calendar/pull/5358"}, {"name": "https://hackerone.com/reports/2058337", "tags": ["x_refsource_MISC"], "url": "https://hackerone.com/reports/2058337"}], "affected": [{"vendor": "nextcloud", "product": "security-advisories", "versions": [{"version": ">= 1.0.0, < 4.4.4", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2023-10-16T19:06:03.674Z"}, "descriptions": [{"lang": "en", "value": "Nextcloud calendar is a calendar app for the Nextcloud server platform. Due to missing precondition checks the server was trying to validate strings of any length as email addresses even when megabytes of data were provided, eventually making the server busy and unresponsive. It is recommended that the Nextcloud Calendar app is upgraded to 4.4.4. The only workaround for users unable to upgrade is to disable the calendar app."}], "source": {"advisory": "GHSA-r936-8gwm-w452", "discovery": "UNKNOWN"}}}}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:nextcloud:calendar:*:*:*:*:*:*:*:*", "matchCriteriaId": "AC6A69AB-4972-431A-8734-0234D2734BAF", "versionEndExcluding": "4.4.4", "versionStartIncluding": "1.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "Nextcloud calendar is a calendar app for the Nextcloud server platform. Due to missing precondition checks the server was trying to validate strings of any length as email addresses even when megabytes of data were provided, eventually making the server busy and unresponsive. It is recommended that the Nextcloud Calendar app is upgraded to 4.4.4. The only workaround for users unable to upgrade is to disable the calendar app."}, {"lang": "es", "value": "Nextcloud calendar es una aplicaci\u00f3n de calendario para la plataforma del servidor Nextcloud. Debido a la falta de comprobaciones de condiciones previas, el servidor intentaba validar cadenas de cualquier longitud como direcciones de correo electr\u00f3nico incluso cuando se proporcionaban megabytes de datos, lo que eventualmente hac\u00eda que el servidor estuviera ocupado y no respondiera. Se recomienda actualizar la aplicaci\u00f3n Calendario Nextcloud a 4.4.4. El \u00fanico workaround para los usuarios que no pueden actualizar es desactivar la aplicaci\u00f3n de calendario."}], "id": "CVE-2023-45150", "lastModified": "2023-10-20T12:11:24.833", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2023-10-16T20:15:15.393", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/nextcloud/calendar/pull/5358"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r936-8gwm-w452"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Issue Tracking"], "url": "https://hackerone.com/reports/2058337"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-354"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-400"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}