module

Docker Daemon - Unprotected TCP Socket Exploit

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Disclosed
Jul 25, 2017
Created
May 30, 2018

Description

Utilizing Docker via unprotected tcp socket (2375/tcp, maybe 2376/tcp
with tls but without tls-auth), an attacker can create a Docker
container with the '/' path mounted with read/write permissions on the
host server that is running the Docker container. As the Docker
container executes command as uid 0 it is honored by the host operating
system allowing the attacker to edit/create files owned by root. This
exploit abuses this to creates a cron job in the '/etc/cron.d/' path of
the host server.

The Docker image should exist on the target system or be a valid image
from hub.docker.com.

Author

Martin Pizala

Platform

Linux,Python

Architectures

x64, python

References

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/http/docker_daemon_tcp
    msf exploit(docker_daemon_tcp) > show targets
        ...targets...
    msf exploit(docker_daemon_tcp) > set TARGET < target-id >
    msf exploit(docker_daemon_tcp) > show options
        ...show and set options...
    msf exploit(docker_daemon_tcp) > exploit
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