Description
REDAXO is a PHP-based content management system. From 5.18.2 until 5.21.1, rex_mediapool::isAllowedExtension in redaxo/src/addons/mediapool/lib/mediapool.php lets an authenticated backend user with media[upload] permission upload a JPEG/PHP polyglot named shell.php.any.jpg, which web servers with multi-extension PHP handlers can execute as the web-server user. This issue is fixed in version 5.21.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| redaxo | core | >= 5.18.2, < 5.21.1 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | redaxo/source | >= 5.18.2, < 5.21.1 | 5.21.1 | GHSA-98pp-vccm-qm25 |