"Buck Security comprises a collection of security scans for Debian-based Linux distributions, including Ubuntu.
(...)
Unlike scanners such as Tiger or Lynis, Buck Security concentrates on only the most important checks, and tries not to scare users with a lot of output."
Lee Schlesinger

Introduction
buck-security is a collection of security checks for Linux. It was designed for Debian and Ubuntu servers, but can be useful for any Linux system.
The aim of buck-security is to allow you to get a quick overview of the security status of your system. As a linux system administrator - but also as a normal linux user - you often wonder if your system is secure. In this situation it is useful to get an overvirew of the security status of the system immediately. buck-security was designed exactly for this. It runs important tests and returns the results to you after a couple of minutes.
Download latest version:
Verifiy Checksum
Or use:
wget http://sourceforge.net/projects/buck-security/files/buck-security/buck-security_0.6/buck-security_0.6.zip
Features
By now the following tests are implemented:- Searching for worldwriteable files
- Searching for worldwriteable directories
- Searching for programs where the setuid is set
- Searching for programs where the setgid is set
- Checking your umask
- Checking if the sticky-bit is set for /tmp
- Searching for superusers
- Checking firewall policies
- Checking if sshd is secured
- Searching for listening services
- Creating and checking checksums of system programs
- Searching for installed attack tools packages
Learn more at the documentation site.