Parallels Remote Application Server (RAS) 17.1.1 has a Business Logic Error causing remote code execution. It allows an authenticated user to execute any application in the backend operating system through the web application, despite the affected application not being published. In addition, it was discovered that it is possible to access any host in the internal domain, even if it has no published applications or the mentioned host is no longer associated with that server farm.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15860
Reference (s):
- https://kb.parallels.com/en/125112
- https://www.coresecurity.com/core-labs/advisories/parallels-ras-os-command-execution
- https://www.parallels.com/products/ras/remote-application-server/