Description
This module exploits an injection vulnerability in the Network Manager VPNC plugin to gain root privileges.
This module uses a new line injection vulnerability in the configured username for a VPN network connection to inject a `Password helper` configuration directive into the connection configuration.
The specified helper is executed by Network Manager as root when the connection is started.
Network Manager VPNC versions prior to 1.2.6 are vulnerable.
This module has been tested successfully with VPNC versions: 1.2.4-4 on Debian 9.0.0 (x64); and 1.1.93-1 on Ubuntu Linux 16.04.4 (x64).
Module options
To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':
msf > use exploit/linux/local/network/manager_vpnc_username_priv_escmsf undefined(manager_vpnc_username_priv_esc) > show actions ...actions...msf undefined(manager_vpnc_username_priv_esc) > set ACTION < action-name >msf undefined(manager_vpnc_username_priv_esc) > show options ...show and set options...msf undefined(manager_vpnc_username_priv_esc) > runPrioritise with Active Threat Intelligence
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