{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symfony/symfony"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.0.19"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symfony/symfony"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.1.0"
            },
            {
              "fixed": "2.1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-291"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-05-30T12:35:51Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "Damien Tournoud, from the Drupal security team, contacted us two days ago about a security issue in the Request::getClientIp() method when the trust proxy mode is enabled (Request::trustProxyData()).\n\nAn application is vulnerable if it uses the client IP address as returned by the Request::getClientIp() method for sensitive decisions like IP based access control.\n\nTo fix this security issue, the following changes have been made to all versions of Symfony2:\n\nA new Request::setTrustedProxies() method has been introduced and should be used intead of Request::trustProxyData() to enable the trust proxy mode. It takes an array of trusted proxy IP addresses as its argument:\n```\n// before (probably in your front controller script)\nRequest::trustProxyData();\n```\n```\n// after\nRequest::setTrustedProxies(array(\u00271.1.1.1\u0027));\n// 1.1.1.1 being the IP address of a trusted reverse proxy\n```\nThe Request::trustProxyData() method has been deprecated (when used, it automatically trusts the latest proxy in the chain -- which is the current remote address):\n```\nRequest::trustProxyData();\n```\n```\n// is equivalent to\nRequest::setTrustedProxies(array($request-\u003eserver-\u003eget(\u0027REMOTE_ADDR\u0027)));\n```\nWe encourage all Symfony2 users to upgrade as soon as possible. It you don\u0027t want to upgrade to the latest version yet, you can also apply the following patches:\n\n[Patch](https://github.com/symfony/symfony/compare/fc89d6b...9ce892c.patch) for Symfony 2.0.19\n[Patch](https://github.com/symfony/symfony/compare/922c201...e5536f0.patch) for Symfony 2.1.4",
  "id": "GHSA-hx53-jchx-cr52",
  "modified": "2024-05-30T12:35:51Z",
  "published": "2024-05-30T12:35:51Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/symfony/symfony/commit/922c2015f61a7205180d423dce1f7365cc2d8460"
    },
    {
      "type": "WEB",
      "url": "https://github.com/symfony/symfony/commit/9ce892cf4395e73b136e9b5cd1fae9e91995c93b"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/2012-11-29.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/symfony/symfony"
    },
    {
      "type": "WEB",
      "url": "https://symfony.com/blog/security-release-symfony-2-0-19-and-2-1-4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Symfony2 improper IP based access control"
}