Total.js CMS 12.0.0 - Remote Command Execution (RCE) via Malicious Widget

CVE-2019-15954 · CRITICAL Severity

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

An issue was discovered in Total.js CMS 12.0.0. An authenticated user with the widgets privilege can gain achieve Remote Command Execution (RCE) on the remote server by creating a malicious widget with a special tag containing JavaScript code that will be evaluated server side. In the process of evaluating the tag by the back-end, it is possible to escape the sandbox object by using the following payload: <script total>global.process.mainModule.require(child_process).exec(RCE);</script>

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