Sudo Shell is a wrapper to run a login shell with sudo for the purpose of session audit logging.
This project is part of our comprehensive "SweetOps" approach towards DevOps.
It's 100% Open Source and licensed under the APACHE2.
The sudo command provides built-in session logging.
Combined with sudoreplay
it provides an easy way to review session logs on a
bastion host.
When used as a system login shell, it will force session logging.
Another common pattern
is to use the OpenSSH ForceCommand directive in sshd_config combined with the script command to log sessions.
This is ineffective because the user can easily bypass it.
Using sudosh provides a more secure alternative that cannot be bypassed since it does not depend on ForceCommand.
Here's how to use it in 3 easy steps. Checkout the precompiled releases if you don't want to build it yourself...:
- Enable
sudologging. Edit/etc/sudoers.d/sudosh:
Defaults log_output
Defaults!/usr/bin/sudoreplay !log_output
Defaults!/sbin/reboot !log_output
- Add this command to
/etc/shells:
/usr/bin/sudosh
Tip: to prevent users from using other shells to login, remove those shells from /etc/shells.
- Update the user
foobarto use thesudoshshell.
chsh -s /usr/bin/sudosh foobar
echo 'foobar ALL=(foobar) ALL' > /etc/sudoers.d/sudosh-foobar
NOTE: filenames in sudoers.d cannot contain the . character
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