CVE-2024-47823: Livewire Remote Code Execution (RCE) on File Uploads
First published: Tue Oct 08 2024(Updated: )
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. ```php 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'], ); } } ```
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/livewire/livewire | <2.12.7 | 2.12.7 |
| composer/livewire/livewire | >=3.0.0-beta.1<3.5.2 | 3.5.2 |
| <2.12.7 | ||
| >=3.0.0<3.5.2 |
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Reference Links
- https://github.com/livewire/livewire/security/advisories/GHSA-f3cx-396f-7jqp
- https://github.com/livewire/livewire/commit/70503b79f5db75a1eac9bf55826038a6ee5a16d5
- https://nvd.nist.gov/vuln/detail/CVE-2024-47823
- https://github.com/livewire/livewire/pull/8624
- https://github.com/livewire/livewire/commit/cd168c6212ea13d13b82b3132485741f82d9fad9
- https://github.com/advisories/GHSA-f3cx-396f-7jqp (Advisory)
Frequently Asked Questions
What is the severity of CVE-2024-47823?
CVE-2024-47823 is considered a moderate severity vulnerability due to the potential for file upload attacks.
How do I fix CVE-2024-47823?
To fix CVE-2024-47823, update livewire/livewire to version 2.12.7 or 3.5.2 or later.
Who is affected by CVE-2024-47823?
CVE-2024-47823 affects users of livewire/livewire versions prior to 2.12.7 and between 3.0.0-beta.1 and 3.5.2.
What type of vulnerability is CVE-2024-47823?
CVE-2024-47823 is a file upload vulnerability that allows attackers to bypass file extension validation.
Can exploiting CVE-2024-47823 lead to further security issues?
Yes, exploiting CVE-2024-47823 could potentially lead to arbitrary code execution or other attacks if malicious files are uploaded.
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