Shellshock Ubuntu patch

shellshock.sh

#!/bin/bash

env X="() { :;} ; echo shellshock" /bin/sh -c "echo completed"
env X="() { :;} ; echo shellshock" `which bash` -c "echo completed"

sudo apt-get update

# for /bin/bash
sudo apt-get upgrade -y bash

# for /bin/sh
sudo rm /bin/sh
sudo ln -s dash /bin/sh

env X="() { :;} ; echo shellshock" /bin/sh -c "echo completed"
env X="() { :;} ; echo shellshock" `which bash` -c "echo completed"

/bin/sh should remain a symlink to dash, not bash. Pointing /bin/sh at bash makes things worse...

Really, just apt-get update && apt-get -u dist-upgrade.

Thanks!