Arbitrary file upload in Laravel Livewire
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (56.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Laravel Livewire
- Livewire — versions >= 3.0.0-beta.1, < 3.5.2, < 2.12.7
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/livewire/livewire/security/advisories/GHSA-f3cx-396f-7jqp (Exploit, Vendor Advisory)
- github.com/livewire/livewire/pull/8624 (Patch, Issue Tracking)
- github.com/livewire/livewire/commit/70503b79f5db75a1eac9bf55826038a6ee5a16d5 (Patch)
- github.com/livewire/livewire/commit/cd168c6212ea13d13b82b3132485741f82d9fad9 (Patch)
Frequently asked questions
- What is CVE-2024-47823?
- CVE-2024-47823 is a critical-severity vulnerability in Laravel Livewire, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2024-10-08.
- How severe is CVE-2024-47823?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2024-47823 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.