[LinEnum] Scripted Local Linux Enumeration & Privilege Escalation Checks

Tuesday, August 20, 2013


High-level summary of the checks/tasks performed by LinEnum:
  • Kernel and distribution release details
  • System Information:
    • Hostname
    • Networking details:
    • Current IP
    • Default route details
    • DNS server information
  • User Information:
    • Current user details
    • Last logged on users
    • List all users including uid/gid information
    • List root accounts
    • Extract full details for ‘default’ uid’s such as 0, 1000, 1001 etc
    • Attempt to read restricted files i.e. /etc/shadow
    • List current users history files (i.e .bash_history, .nano_history etc.)
  • Privileged access:
    • Determine if /etc/sudoers is accessible
    • Determine if the current user has Sudo access without a password
    • Are known ‘good’ breakout binaries available via Sudo (i.e. nmap, vim etc.)
    • Is root’s home directory accessible
    • List permissions for /home/
  • Environmental:
    • Display current $PATH
  • Jobs/Tasks:
    • List all cron jobs
    • Locate all world-writable cron jobs
    • Locate cron jobs owned by other users of the system
  • Services:
    • List network connections (TCP & UDP)
    • List running processes
    • Lookup and list process binaries and associated permissions
    • List inetd.conf/xined.conf contents and associated binary file permissions
    • List init.d binary permissions
  • Version Information (of the following):
    • Sudo
    • MYSQL
    • Postgres
    • Apache
  • Default/Weak Credentials:
    • Checks for default/weak Postgres accounts
    • Checks for default root/root access to local MYSQL services
  • Searches:
    • Locate all SUID/GUID files
    • Locate all world-writable SUID/GUID files
    • Locate all SUID/GUID files owned by root
    • Locate ‘interesting’ SUID/GUID files (i.e. nmap, vim etc)
    • List all world-writable files
    • Find/list all accessible *.plan files and display contents
    • Find/list all accesible *.rhosts files and display contents
    • Show NFS server details
    • Locate *.conf and *.log files containing keyword supplied at script runtime
    • List all *.conf files located in /etc
    • Locate mail



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