Description
This module exploits command injection vulnerabilities and an insecure default sudo configuration on VyOS versions 1.0.0 <= 1.1.8 to execute arbitrary system commands as root.
VyOS features a `restricted-shell` system shell intended for use by low privilege users with operator privileges. This module exploits a vulnerability in the `telnet` command to break out of the restricted shell, then uses sudo to exploit a command injection vulnerability in `/opt/vyatta/bin/sudo-users/vyatta-show-lldp.pl` to execute commands with root privileges.
This module has been tested successfully on VyOS 1.1.8 amd64 and VyOS 1.0.0 i386.
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/ssh/vyos/restricted_shell_privescmsf undefined(restricted_shell_privesc) > show actions ...actions...msf undefined(restricted_shell_privesc) > set ACTION < action-name >msf undefined(restricted_shell_privesc) > show options ...show and set options...msf undefined(restricted_shell_privesc) > runPrioritise with Active Threat Intelligence
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