Serv-U FTP Server prepareinstallation Privilege Escalation
Posted on 02 July 2019
This Metasploit module attempts to gain root privileges on systems running Serv-U FTP Server versions prior to 15.1.7. The Serv-U executable is setuid root, and uses ARGV[0] in a call to system(), without validation, when invoked with the -prepareinstallation flag, resulting in command execution with root privileges. This module has been tested successfully on Serv-U FTP Server version 15.1.6 (x64) on Debian 9.6 (x64).
