COMMAND

    nfsd(8)

SYSTEMS AFFECTED

    Linux running Universal NFS 2.0 or earlier.

PROBLEM

    Read-only export does not work,  its only parsed.  Users  can kill
    nsfd. This is because the  nsfd seteuid(2) to the current  request
    uid  instead  of  setfsuid(2)/setfsgid(2).   The  root_squash  and
    no_root_squash  flags  does  not  work.   File  handles  are easly
    guessed.  Default exports file contains '#' at the start of  file.
    Under some  broken resolvers  this means  a machine  named '#' can
    mount all your disks.

SOLUTION

    Upgrade to Universal NSF 2.1 or later.