CVE-2024-47823

Description

Livewire is a full-stack framework for Laravel that allows for dynamic UI components without leaving PHP. In livewire/livewire prior to `2.12.7` 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: 1. Filename is composed of the original file name using `$file->getClientOriginalName()`. 2. Files stored directly on your server in a public storage disk. 3. Webserver is configured to execute “.php” files. This issue has been addressed in release versions `2.12.7` and `3.5.2`. All users are advised to upgrade. There are no known workarounds for this vulnerability.

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CVSS v3.1 Score

9.8

CRITICAL

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

Weakness Type (CWE)

CWE-20 Improper Input Validation

CWE-434 Unrestricted Upload

Affected Products

Vendor	Product	Versions
laravel	livewire	< 2.12.7
laravel	livewire	3.0.0 — 3.5.2

References

Advisories & Patches

https://github.com/livewire/livewire/commit/70503b79f5db75a1eac9bf55826038a6ee5a16d5 https://github.com/livewire/livewire/commit/cd168c6212ea13d13b82b3132485741f82d9fad9 https://github.com/livewire/livewire/pull/8624 https://github.com/livewire/livewire/security/advisories/GHSA-f3cx-396f-7jqp

Exploits

https://github.com/livewire/livewire/security/advisories/GHSA-f3cx-396f-7jqp

Frequently Asked Questions

What is CVE-2024-47823? +

Livewire is a full-stack framework for Laravel that allows for dynamic UI components without leaving PHP. In livewire/livewire prior to `2.12.7` 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: 1. Filename is composed of the original file name using `$file->getClientOriginalName()`. 2. Files stored directly on your server in a public storage disk. 3. Webserver is configured to execute “.php” files. This issue has been addressed in release versions `2.12.7` and `3.5.2`. All users are advised to upgrade. There are no known workarounds for this vulnerability. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2024-47823? +

CVE-2024-47823 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2024-47823? +

CVE-2024-47823 affects products from laravel, specifically: livewire. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-47823? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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