Invision Community through 4.7.16 allows remote code execution via the applications/core/modules/admin/editor/toolbar.php IPS\core\modules\admin\editor\_toolbar::addPlugin() method. This method handles uploaded ZIP files that are extracted into the applications/core/interface/ckeditor/ckeditor/plugins/ directory without properly verifying their content. This can be exploited by admin users (with the toolbar_manage permission) to write arbitrary PHP files into that directory, leading to execution of arbitrary PHP code in the context of the web server user.
CVSS Details
- CVSS 3.1 Base Score: 7.2
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
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