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GHSA-JQ4P-MQ33-W375

Vulnerability from github – Published: 2022-01-28 23:08 – Updated: 2022-02-07 21:16
VLAI
Summary
Cross-site Scripting when rendering error messages in laminas-form
Details

Impact

When rendering validation error messages via the formElementErrors() view helper shipped with laminas-form, many messages will contain the submitted value. However, in vulnerable versions of laminas-form, the value was not being escaped for HTML contexts, which can potentially lead to a Reflected Cross-Site Scripting (XSS) attack.

Patches

The following versions were issued to mitigate the vulnerability:

  • 2.17.1
  • 3.0.2
  • 3.1.1

Workarounds

At the top of a view script where you call the formElementErrors() view helper, place the following code:

use Laminas\Form\ElementInterface;
use Laminas\View\PhpRenderer;

$escapeMessages = function (ElementInterface $formOrElement, PhpRenderer $renderer): void {
    $messages = $element->getMessages();
    if (! $messages) {
        return;
    }

    $escaped  = [];
    array_walk_recursive(
        $messages,
        static function (string $item) use (&$escaped, $renderer): void {
            $escaped[] = $renderer->escapeHtml($item);
        }
    };

    $element->setMessages($escaped);
};

Before calling formElementErrors() with a form, fieldset, or element, call the above closure as follows

// Usage with a form
// $this is the view renderer
$escapeMessages($form, $this);

// Usage with a fieldset
// $this is the view renderer
$escapeMessages($fieldset, $this);

// Usage with a form element
// $this is the view renderer
$escapeMessages($element, $this);

For more information

If you have any questions or comments about this advisory:

Severity
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "laminas/laminas-form"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.1.0"
            },
            {
              "fixed": "3.1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "laminas/laminas-form"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "3.0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "laminas/laminas-form"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.17.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-23598"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-01-28T18:49:08Z",
    "nvd_published_at": "2022-01-28T22:15:00Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nWhen rendering validation error messages via the `formElementErrors()` view helper shipped with laminas-form, many messages will contain the submitted value. However, in vulnerable versions of laminas-form, the value was not being escaped for HTML contexts, which can potentially lead to a Reflected Cross-Site Scripting (XSS) attack.\n\n### Patches\n\nThe following versions were issued to mitigate the vulnerability:\n\n- 2.17.1\n- 3.0.2\n- 3.1.1\n\n### Workarounds\n\nAt the top of a view script where you call the `formElementErrors()` view helper, place the following code:\n\n```php\nuse Laminas\\Form\\ElementInterface;\nuse Laminas\\View\\PhpRenderer;\n\n$escapeMessages = function (ElementInterface $formOrElement, PhpRenderer $renderer): void {\n    $messages = $element-\u003egetMessages();\n    if (! $messages) {\n        return;\n    }\n\n    $escaped  = [];\n    array_walk_recursive(\n        $messages,\n        static function (string $item) use (\u0026$escaped, $renderer): void {\n            $escaped[] = $renderer-\u003eescapeHtml($item);\n        }\n    };\n\n    $element-\u003esetMessages($escaped);\n};\n```\n\nBefore calling `formElementErrors()` with a form, fieldset, or element, call the above closure as follows\n\n```php\n// Usage with a form\n// $this is the view renderer\n$escapeMessages($form, $this);\n\n// Usage with a fieldset\n// $this is the view renderer\n$escapeMessages($fieldset, $this);\n\n// Usage with a form element\n// $this is the view renderer\n$escapeMessages($element, $this);\n```\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* [Open an issue](https://github.com/laminas/laminas-form/issues/new)\n* Email us at [security@getlaminas.org](mailto:security@getlaminas.org)",
  "id": "GHSA-jq4p-mq33-w375",
  "modified": "2022-02-07T21:16:31Z",
  "published": "2022-01-28T23:08:29Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/laminas/laminas-form/security/advisories/GHSA-jq4p-mq33-w375"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-23598"
    },
    {
      "type": "WEB",
      "url": "https://github.com/laminas/laminas-form/commit/43005a3ec4c2292d4f825273768d9b884acbca37"
    },
    {
      "type": "WEB",
      "url": "https://getlaminas.org/security/advisory/LP-2022-01"
    },
    {
      "type": "WEB",
      "url": "https://github.com/laminas/laminas-form"
    },
    {
      "type": "WEB",
      "url": "https://github.com/laminas/laminas-form/releases/tag/2.17.1"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CFF6WJ5I7PSEBRF6I753WKE2BXFBGQXE"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SLNABVK26CE4PFL57VLY242FW3QY4CPC"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Cross-site Scripting when rendering error messages in laminas-form"
}



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