Univention Corporate Server 4.1 erratum 124 (security)

This update addresses the following security related issues:
* In case an account locking password policy has been defined for the domain,
  e.g. via samba-tool domain passwordsettings, the badPwdCount increased
  in steps of two for each failed login attempt at a windows client.
* Getting and setting Windows ACLs on symlinks could change permissions
  on the link target (CVE-2015-7560)
* The patch for CVE-2015-5252 caused a regression for the special share
  path "/".