that's some straw man you got there. Just because bash is vulnerable in this cas...

danielweber · on Sept 25, 2014

Does NetworkManager completely obviate the need for the DHCP binary to call shell scripts?

Those scripts often exist because if the sysadmin needs something special to happen on DHCP, this is where he sets it. It's not "DHCP scripts get run by/are shell scripts," it's "DHCP binaries are prepared to call out to external scripts."

I've had to write these shell scripts (using ksh, since OpenBSD, so those are safe).

Maken · on Sept 25, 2014

Well, Network Manager for starters is a binary and not a shell script like the dhclient-script.

dfc · on Sept 26, 2014

Network manager depends on "the dhclient-script."

  > A variety of other system services are used by NetworkManager
  > to provide  network functionality wpasupplicant  for wireless
  > connections  and 8021x  wired  connections pppd  for PPP  and
  > mobile  broadband connections  DHCP  clients  for dynamic  IP
  > addressing

http://cgit.freedesktop.org/NetworkManager/NetworkManager/tr...

danielweber · on Sept 25, 2014

dhclient is a binary on Linux and OpenBSD.

It calls shell scripts, because, like I said in the comment you replied to, sometimes sysadmins need very specific things to happen when the machine gets a DHCP lease.