CVE-2021-23393

{"id": "CVE-2021-23393", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 4.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "report@snyk.io", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 2.8}]}, "published": "2021-06-11T00:15:09.273", "references": [{"url": "https://github.com/briancappello/flask-unchained/commit/71e36b28166f9ffbe0a991f51127f0984f7e6a40", "tags": ["Patch", "Third Party Advisory"], "source": "report@snyk.io"}, {"url": "https://snyk.io/vuln/SNYK-PYTHON-FLASKUNCHAINED-1293189", "tags": ["Patch", "Third Party Advisory"], "source": "report@snyk.io"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-601"}]}], "descriptions": [{"lang": "en", "value": "This affects the package Flask-Unchained before 0.9.0. When using the the _validate_redirect_url function, it is possible to bypass URL validation and redirect a user to an arbitrary URL by providing multiple back slashes such as \\\\\\evil.com/path. This vulnerability is only exploitable if an alternative WSGI server other than Werkzeug is used, or the default behaviour of Werkzeug is modified using 'autocorrect_location_header=False."}, {"lang": "es", "value": "Esto afecta al paquete Flask-Unchained versiones anteriores a 0.9.0. Cuando se usa la funci\u00f3n _validate_redirect_url, es posible omitir la comprobaci\u00f3n de la URL y redireccionar a un usuario a una URL arbitraria proporcionando m\u00faltiples barras invertidas, como por ejemplo \\\\\\evil.com/path. Esta vulnerabilidad s\u00f3lo es explotable si un servidor WSGI alternativo a Werkzeug es usado, o se modifica el comportamiento por defecto de Werkzeug usando \"autocorrect_location_header=False"}], "lastModified": "2021-06-22T16:53:53.523", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:flask_unchained_project:flask_unchained:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4491B634-FD96-4E0C-9584-EB97EBC710F1", "versionEndExcluding": "0.9.0"}], "operator": "OR"}]}], "sourceIdentifier": "report@snyk.io"}