User:Misc/Hardening checklist

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Line 34: Line 34:
 
** check log file permission ( read )
 
** check log file permission ( read )
 
** check where the service can write  
 
** check where the service can write  
 +
** check if password are not readable
  
 
* check if the service can work in a hardened setup ( http://womble.decadent.org.uk/blog/whats-in-the-linux-kernel-for-debian-70-wheezy-part-1.html )
 
* check if the service can work in a hardened setup ( http://womble.decadent.org.uk/blog/whats-in-the-linux-kernel-for-debian-70-wheezy-part-1.html )
 
** activate fs.protected_symlinks and see if it break
 
** activate fs.protected_symlinks and see if it break
 
** activate fs.protected_hardlinks and see if it break
 
** activate fs.protected_hardlinks and see if it break

Revision as of 10:50, 3 March 2013

List of check for security hardening of a package

  • inspect service file ( http://0pointer.de/blog/projects/security.html )
    • private tmp, ( PrivateTmp=true )
    • private network ( PrivateNetwork= )
    • block syscall ( SystemCallFilter= )
    • block device ( DeviceAllow= )
    • block path ( like /home ) ( ReadOnlyDirectories= , InaccessibleDirectories= )
    • block the number of process to run ( LimitNPROC=1 )
  • check if a daemon do not have a selinux policy or not
    • check with ps faxZ if run with "system_u:system_r:initrc_t:s0" domain
  • inspect rpmlint error about insecure file usage & insecure API ( need git HEAD version )
    • check of initgroups/setuid/setgroup order
    • check for chdir before chroot
    • check for compile flags properly added
  • check if daemon is run as root with ps fax
  • check if daemon drop caps, with pscap, if run as root
    • use CapabilityBoundingSet= in service file to reduce them if possible
  • check if started by default if network facing
  • check if package is up to date
  • check file permission
    • check log file permission ( read )
    • check where the service can write
    • check if password are not readable