<p>There is no fixed version for <code>xo-server</code>.</p>

Improper Access Control Affecting xo-server package, versions *

Snyk CVSS

Attack Complexity Low

Threat Intelligence

Exploit Maturity Proof of concept

EPSS 0.06% (24^th percentile)

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Snyk ID SNYK-JS-XOSERVER-1316690
published 14 Jul 2021
disclosed 13 Jul 2021
credit @r3naissance

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Introduced: 13 Jul 2021

CVE-2021-36383 Open this link in a new tab CWE-284 Open this link in a new tab

How to fix?

There is no fixed version for xo-server.

Overview

Affected versions of this package are vulnerable to Improper Access Control. Permissions enforcement through WebSockets are not thoroughly checked and can lead to an unprivileged user to obtain data only accessible by admin, such as VMs, Backups, Audit, Users, and Groups.

The WebSockets that control the application API allow access to certain elements based purely on the response. For example, an attacker could manipulate the response of the resourceSet.getAll method to cause the UI to expose admin-level data.