GHSA-F3CX-396F-7JQP

Vulnerability from github – Published: 2024-10-08 22:19 – Updated: 2024-10-09 23:52
VLAI
Summary
Livewire Remote Code Execution on File Uploads
Details

In livewire/livewire prior to v2.12.7 and v3.5.2, the file extension of an uploaded file is guessed based on the MIME type. As a result, the actual file extension from the file name is not validated. An attacker can therefore bypass the validation by uploading a file with a valid MIME type (e.g., image/png) and a “.php” file extension. If the following criteria are met, the attacker can carry out an RCE attack:

  • Filename is composed of the original file name using $file->getClientOriginalName()
  • Files stored directly on your server in a public storage disk
  • Webserver is configured to execute “.php” files

PoC

In the following scenario, an attacker could upload a file called shell.php with an image/png MIME type and execute it on the remote server.

class SomeComponent extends Component
{
    use WithFileUploads;

    #[Validate('image|extensions:png')]
    public $file;

    public function save()
    {
        $this->validate();

        $this->file->storeAs(
            path: 'images',
            name: $this->file->getClientOriginalName(),
            options: ['disk' => 'public'],
        );
    }
}
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.7 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "livewire/livewire"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0-beta.1"
            },
            {
              "fixed": "3.5.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "livewire/livewire"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.12.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-47823"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-434"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-10-08T22:19:16Z",
    "nvd_published_at": "2024-10-08T18:15:31Z",
    "severity": "HIGH"
  },
  "details": "In livewire/livewire prior to `v2.12.7` and `v3.5.2`, the file extension of an uploaded file is guessed based on the MIME type. As a result, the actual file extension from the file name is not validated. An attacker can therefore bypass the validation by uploading a file with a valid MIME type (e.g., `image/png`) and a \u201c.php\u201d file extension.\nIf the following criteria are met, the attacker can carry out an RCE attack:\n\n- Filename is composed of the original file name using `$file-\u003egetClientOriginalName()`\n- Files stored directly on your server in a public storage disk\n- Webserver is configured to execute \u201c.php\u201d files\n\n### PoC\nIn the following scenario, an attacker could upload a file called `shell.php` with an `image/png` MIME type and execute it on the remote server.\n```php\nclass SomeComponent extends Component\n{\n    use WithFileUploads;\n\n    #[Validate(\u0027image|extensions:png\u0027)]\n    public $file;\n\n    public function save()\n    {\n        $this-\u003evalidate();\n\n        $this-\u003efile-\u003estoreAs(\n            path: \u0027images\u0027,\n            name: $this-\u003efile-\u003egetClientOriginalName(),\n            options: [\u0027disk\u0027 =\u003e \u0027public\u0027],\n        );\n    }\n}\n```\n\n",
  "id": "GHSA-f3cx-396f-7jqp",
  "modified": "2024-10-09T23:52:22Z",
  "published": "2024-10-08T22:19:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/livewire/livewire/security/advisories/GHSA-f3cx-396f-7jqp"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47823"
    },
    {
      "type": "WEB",
      "url": "https://github.com/livewire/livewire/pull/8624"
    },
    {
      "type": "WEB",
      "url": "https://github.com/livewire/livewire/commit/70503b79f5db75a1eac9bf55826038a6ee5a16d5"
    },
    {
      "type": "WEB",
      "url": "https://github.com/livewire/livewire/commit/cd168c6212ea13d13b82b3132485741f82d9fad9"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/livewire/livewire"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Livewire Remote Code Execution on File Uploads"
}



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