GHSA-vcg6-8fxc-x5cq silverstripe/framework allows upload of dangerous file types
A malicious CMS user can upload dangerous file types like .js or .jar to execute code in the website's security context.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-vcg6-8fxc-x5cq?
GHSA-vcg6-8fxc-x5cq is a vulnerability in silverstripe/framework, published on 27 May 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Some potentially dangerous file types exist in File.allowed_extensions which could allow a malicious CMS user to upload files that then get executed in the security context of the website. We have removed the ability to upload .css, .js, .potm, .dotm, .xltm and .jar files in the default configuration. Since allowed_extensions are synced to webserver configuration (in assets/.htaccess) automatically, this will also deny access to any existing uploads with these extensions.
Review our security guidelines for the Common Web Platform and the File Security guide for SilverStripe 4 to find out how to add or remove extensions.
Which versions are affected by GHSA-vcg6-8fxc-x5cq?
6 open source packages ship an affected version, including silverstripe/framework.
| Package | Affected | Fixed in |
|---|---|---|
silverstripe/framework Packagist | From 3.6.5-rc1 | 3.6.6 |
silverstripe/framework Packagist | From 3.6.5-rc1 | 3.6.6 |
silverstripe/framework Packagist | From 4.0.3-rc1 | 4.0.4 |
silverstripe/framework Packagist | From 4.0.3-rc1 | 4.0.4 |
silverstripe/framework Packagist | From 4.1.0-rc1 | 4.1.1 |
silverstripe/framework Packagist | From 4.1.0-rc1 | 4.1.1 |
How do I fix GHSA-vcg6-8fxc-x5cq?
Upgrade silverstripe/framework to a fixed version for your release line: 3.6.6, 4.0.4 or 4.1.1.
Is GHSA-vcg6-8fxc-x5cq being exploited?
There is no known exploitation of GHSA-vcg6-8fxc-x5cq in the wild and no public exploit code.