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easy-vuls

This is a single script to provide a quick and easy way to use vuls, go-cve-dictionary, and VulsRepo.

This requires Python3 and Docker.

This script is likely to change, and the documentation is not yet complete.

The projects this script depends on are still under development, so things may not work as expected. If you find any issues, please report them to he relevant project!

At the moment you have to manually run docker pull to get in the latest images whenever they have been updated:

docker pull vuls/vuls
docker pull vuls/go-cve-dictionary
docker pull vuls/vulsrepo

Getting started

To begin, you will need Python3 and Docker. There are no additional Python module dependencies.

You can use ./easy-vuls --help to get information about commands.

Authentication

You can connect to the hosts through SSH_AUTH_SOCK provided by ssh-agent, which is passed into the container.

You can use private keys by putting them in easy-vuls.data/keys/ and then referring to it in your configuration file.

See vuls prepare's documentation for more information about preparing hosts.

Update the database

Once you have this script and Docker, you will have to update the database. If you do not, you will get an error message telling you to do it before you retry.

./easy-vuls database update

This uses fetchnvd.

Create a vuls config file

You will have to provide a config file for vuls to both prepare and scan hosts. A minimal config file to scan a single host would be something like:

[server.my-host]
host = "my-host.example.com"
user = "root"

The vuls documentation goes into more detail on everything that there is to configure, including parameters for docker containers on the hosts.

Prepare hosts

The vuls prepare command will go though the hosts in the provided config file and make sure that any necissary preparations have been made. You can parepare hosts through easy-vuls using:

./easy-vuls scan --config=my-config.toml prepare

Some host OSes don't need any preparation if you are don't mind providing vuls with root access on them.

See vuls prepare's documentation for more information about preparing hosts.

Run a scan

To run vuls scan with the database retrieved earlier, you can use:

./easy-vuls scan --config=my-config.toml

Show the results

The results of scans are printed to the terminal, and JSON files for each scan/host is stored in ./easy-vuls.results/.

To start serving results on 127.0.0.1:8080/vulsrepo/ through VulsRepo you would use:

./easy-vuls results serve

You can also browse results in your terminal through vuls tui by using:

./easy-vuls results browse

Security

SSH access

The script uses SSH_AUTH_SOCK from the environment when it gets run. This will grant the containers access to any of the machines which allow any key on your keyring while the container is alive.

You may also pass in private keys for the container to use, of course this adds to how much you would be trusting the container and its source.

vuls may require a lot of permissions on a target OS to do its job, for example on Debian it requires root/sudo access to apt-get, which can be used to install packages.

File ownership

The files created inside the docker images are owned by root:root, which is a bit inconvenient if you want to have them owned by your current user on the host.

To get around this, the script does a chown -R on the volumes mounted in so that the ownership matches that of ./easy-vuls. This will include the contents of the ./easy-vuls.*/ directories, along with any config file you provide.