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Nexus Repository Manager 3 – Cross Site Scripting XSS Vulnerability

Details

An attacker with elevated privileges can create entities with specially crafted properties which, when viewed by another user, can execute arbitrary JavaScript in the context of the NXRM application.  We have fixed the issue by ensuring the values are properly encoded. This advisory provides the pertinent information needed to properly address this vulnerability, along with the details on how to reach us if you have any further questions or concerns.

We are not aware of any active exploits taking advantage of this issue. However, we strongly encourage all users of NXRM to immediately take the steps outlined in this advisory.

The identified vulnerability allows arbitrary JavaScript to run in an NXRM user’s browser in the context of the application.  In regards to XSS, it is common that the injected JavaScript could forge requests on behalf of the user, redirect the user to another site or modify the page content.

Vulnerable Systems:

Sonatype Nexus Repository before 3.21.2

CVE Information:

CVE-2020-10203

Disclosure Timeline:
Published Date:04/08/2020

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