ghsa-83c3-qx27-2rwr
Vulnerability from github
Published
2022-05-17 05:17
Modified
2023-09-21 23:06
Summary
Symfony Allows URI Restrictions Bypass Via Double-Encoded String
Details

On the Symfony 2.0.x version, there's a security issue that allows access to routes protected by a firewall even when the user is not logged in.

Both the Routing component and the Security component uses the path returned by getPathInfo() to match a Request. The getPathInfo() returns a decoded path, but the Routing component (Symfony\Component\Routing\Matcher\UrlMatcher) decodes the path a second time; whereas the Security component, Symfony\Component\HttpFoundation\RequestMatcher, does not.

This difference causes Symfony 2.0 to be vulnerable to double encoding attacks.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symfony/http-foundation"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.0.19"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symfony/routing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.0.19"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symfony/security"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.0.19"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symfony/symfony"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.0.19"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2012-6431"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-08-15T23:43:25Z",
    "nvd_published_at": "2012-12-27T11:47:00Z",
    "severity": "MODERATE"
  },
  "details": "On the Symfony 2.0.x version, there\u0027s a security issue that allows access to routes protected by a firewall even when the user is not logged in.\n\nBoth the Routing component and the Security component uses the path returned by `getPathInfo()` to match a Request. The `getPathInfo()` returns a decoded path, but the Routing component (`Symfony\\Component\\Routing\\Matcher\\UrlMatcher`) decodes the path a second time; whereas the Security component, `Symfony\\Component\\HttpFoundation\\RequestMatcher`, does not.\n\nThis difference causes Symfony 2.0 to be vulnerable to double encoding attacks.\n\n",
  "id": "GHSA-83c3-qx27-2rwr",
  "modified": "2023-09-21T23:06:08Z",
  "published": "2022-05-17T05:17:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2012-6431"
    },
    {
      "type": "WEB",
      "url": "https://github.com/symfony/symfony/commit/55014a6841bec50046e8329a4835c160ac31a496"
    },
    {
      "type": "WEB",
      "url": "https://github.com/symfony/symfony/commit/8b2c17f80377582287a78e0b521497e039dd6b0d"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-foundation/CVE-2012-6431.yaml"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/routing/CVE-2012-6431.yaml"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2012-6431.yaml"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2012-6431.yaml"
    },
    {
      "type": "WEB",
      "url": "https://symfony.com/blog/security-release-symfony-2-0-20-and-2-1-5-released"
    },
    {
      "type": "WEB",
      "url": "http://symfony.com/blog/security-release-symfony-2-0-20-and-2-1-5-released"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "Symfony Allows URI Restrictions Bypass Via Double-Encoded String"
}


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