{
  "id": "CVE-2021-23385",
  "sourceIdentifier": "report@snyk.io",
  "published": "2022-08-02T14:15:10.017",
  "lastModified": "2024-11-21T05:51:37.157",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "This affects all versions of package Flask-Security. When using the get_post_logout_redirect and get_post_login_redirect functions, 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. **Note:** Flask-Security is not maintained anymore."
    },
    {
      "lang": "es",
      "value": "Esto afecta a todas las versiones del paquete Flask-Security. Cuando son usadas las funciones get_post_logout_redirect y get_post_login_redirect, es posible omitirse la comprobaci\u00f3n de la URL y redirigir a un usuario a una URL arbitraria proporcionando m\u00faltiples barras diagonales traseras como \\\\\\Ndevil.com/path. Esta vulnerabilidad s\u00f3lo es explotable si es usado un servidor WSGI alternativo que no sea Werkzeug, o es modificado el comportamiento por defecto de Werkzeug usando \"autocorrect_location_header=False. **Nota:** Flask-Security ya no es mantenido"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "report@snyk.io",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.5
      },
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:flask-security_project:flask-security:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A64C5EBD-CA0E-4C5C-A6DD-491E03BF261C"
            }
          ]
        }
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  ],
  "references": [
    {
      "url": "https://github.com/mattupstate/flask-security",
      "source": "report@snyk.io",
      "tags": [
        "Product",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00034.html",
      "source": "report@snyk.io"
    },
    {
      "url": "https://security.snyk.io/vuln/SNYK-PYTHON-FLASKSECURITY-1293234",
      "source": "report@snyk.io",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://snyk.io/blog/url-confusion-vulnerabilities/",
      "source": "report@snyk.io",
      "tags": [
        "Technical Description",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://github.com/mattupstate/flask-security",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Product",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00034.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.snyk.io/vuln/SNYK-PYTHON-FLASKSECURITY-1293234",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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        "Third Party Advisory"
      ]
    },
    {
      "url": "https://snyk.io/blog/url-confusion-vulnerabilities/",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Technical Description",
        "Third Party Advisory"
      ]
    }
  ]
}