https://www.whiteoaksecurity.com/blog/extensis-portfolio-vulnerability-disclosure/
Extensis Portfolio - Main Portal: Authenticated Unrestricted File Upload + Path Traversal Resulting in Remote Code Execution
An unrestricted file upload vulnerability in the FileTransferServlet component of Extensis Portfolio v4.0 allows remote attackers to execute arbitrary code via a crafted file.
Four vulnerabilities can be chained together to exploit an unrestricted file upload vulnerability to achieve code execution:
- Unrestricted Directory Creation
- Lack Of Class Allow List Within The Nashorn Scripting Engine
- Unrestricted File Upload + Path Traversal
- Time of Check to Time of Use (TOCTOU) Race Condition
At the request of the vendor, a full proof of concept script has not been generated.
https://www.extensis.com/portfolio
Reported to vendor on 9/29/21 Public Disclosure on 2/17/22
Michael Rand (randomactsofsecurity) & Talis Ozols
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