Description
Craft CMS is a content management system (CMS). From version 5.6.0 to before version 5.9.13, a Remote Code Execution (RCE) vulnerability exists in Craft CMS, it can be exploited by any authenticated user with control panel access. This is a bypass of a previous fix. The existing patches add cleanseConfig() to assembleLayoutFromPost() and various FieldsController actions to strip Yii2 behavior/event injection keys ("as" and "on" prefixed keys). However, the fieldLayouts parameter in ElementIndexesController::actionFilterHud() is passed directly to FieldLayout::createFromConfig() without any sanitization, enabling the same behavior injection attack chain. This issue has been patched in version 5.9.13.
Problem types
CWE-470: Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
Product status
References
github.com/...ms/cms/security/advisories/GHSA-2fph-6v5w-89hh
github.com/...ommit/97e90b4bdee369c1af3ca77a77531132df240e4e
github.com/craftcms/cms/releases/tag/5.9.13