Buck-Security is a security scanner for Debian and Ubuntu Linux. It helps you to harden your system by running some important security checks. For example, it finds world-writable files and directories, setuid and setgid programs, superuser accounts, and installed attack tool packages.
It also checks your umask and checks if the sticky bit is set for /tmp, among other checks.It was designed for Debian and Ubuntu servers, but can be useful for any Linux system. 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
  • Creating and checking checksums of system programs
  • Searching for installed attack tools packages

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