CVE-2021-38346

{"id": "CVE-2021-38346", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "security@wordfence.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "published": "2021-10-14T16:15:09.317", "references": [{"url": "https://www.wordfence.com/blog/2021/10/multiple-vulnerabilities-in-brizy-page-builder-plugin-allow-site-takeover/", "tags": ["Third Party Advisory"], "source": "security@wordfence.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-22"}, {"lang": "en", "value": "CWE-434"}]}, {"type": "Secondary", "source": "security@wordfence.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "The Brizy Page Builder plugin <= 2.3.11 for WordPress allowed authenticated users to upload executable files to a location of their choice using the brizy_create_block_screenshot AJAX action. The file would be named using the id parameter, which could be prepended with \"../\" to perform directory traversal, and the file contents were populated via the ibsf parameter, which would be base64-decoded and written to the file. While the plugin added a .jpg extension to all uploaded filenames, a double extension attack was still possible, e.g. a file named shell.php would be saved as shell.php.jpg, and would be executable on a number of common configurations."}, {"lang": "es", "value": "El plugin Brizy Page Builder versiones anteriores a 2.3.11 incluy\u00e9ndola, para WordPress permit\u00eda a usuarios autenticados subir archivos ejecutables a una ubicaci\u00f3n de su elecci\u00f3n usando la acci\u00f3n brizy_create_block_screenshot AJAX. El archivo se nombraba por medio del par\u00e1metro id, al que se le pod\u00eda a\u00f1adir \"../\" para llevar a cabo un salto de directorio, y el contenido del archivo se rellenaba por medio del par\u00e1metro ibsf, que se decodificaba en base64 y se escrib\u00eda en el archivo. Mientras el plugin a\u00f1ad\u00eda una extensi\u00f3n .jpg a todos los nombres de archivos subidos, todav\u00eda era posible un ataque de doble extensi\u00f3n, por ejemplo, un archivo llamado shell.php se guardar\u00eda como shell.php.jpg, y ser\u00eda ejecutable en un n\u00famero de configuraciones comunes"}], "lastModified": "2022-07-05T15:03:03.593", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:brizy:brizy-page_builder:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C921466C-0150-4222-BE35-4B60C4590047", "versionEndIncluding": "2.3.11"}], "operator": "OR"}]}], "sourceIdentifier": "security@wordfence.com"}