[org.nuxeo.ecm.platform:nuxeo-platform-oauth] Nuxeo vulnerable to Reflected Cross-Site Scripting leading to Remote Code Execution

The Nuxeo Platform is an open source content management platform for building business applications. In version 11.5.109, the oauth2 REST API is vulnerable to Reflected Cross-Site Scripting (XSS). This XSS can be escalated to Remote Code Execution (RCE) by levering the automation API.

References

• https://nvd.nist.gov/vuln/detail/CVE-2021-32828
• https://github.com/nuxeo/nuxeo/blob/master/modules/platform/nuxeo-platform-oauth/src/main/java/org/nuxeo/ecm/webengine/oauth2/OAuth2Callback.java
• https://securitylab.github.com/advisories/GHSL-2021-072-nuxeo
• https://github.com/advisories/GHSA-x347-fc9w-w7c3