Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS1mM2N4LTM5NmYtN2pxcM4ABAFj

Livewire Remote Code Execution on File Uploads

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'],
        );
    }
}

Permalink: https://github.com/advisories/GHSA-f3cx-396f-7jqp
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1mM2N4LTM5NmYtN2pxcM4ABAFj
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: 7 days ago
Updated: 6 days ago

CVSS Score: 7.5
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Identifiers: GHSA-f3cx-396f-7jqp, CVE-2024-47823
References:

• https://github.com/livewire/livewire/security/advisories/GHSA-f3cx-396f-7jqp
• https://nvd.nist.gov/vuln/detail/CVE-2024-47823
• https://github.com/livewire/livewire/commit/70503b79f5db75a1eac9bf55826038a6ee5a16d5
• https://github.com/livewire/livewire/pull/8624
• https://github.com/livewire/livewire/commit/cd168c6212ea13d13b82b3132485741f82d9fad9
• https://github.com/advisories/GHSA-f3cx-396f-7jqp

Repository: https://github.com/livewire/livewire
Blast Radius: 31.9

Affected Packages