Hand compile bash with Shellshock fix (Source: https://news.ycombinator.com/item?id=8364385)

gistfile1.sh

#assume that your sources are in /src
cd /src

wget http://ftp.gnu.org/gnu/bash/bash-4.3.tar.gz

#download all patches
for i in $(seq -f "%03g" 0 25); do
  wget     http://ftp.gnu.org/gnu/bash/bash-4.3-patches/bash43-$i;
done

tar zxvf bash-4.3.tar.gz 
cd bash-4.3

#apply all patches
for i in $(seq -f "%03g" 0 25); do
  patch -p0 < ../bash43-$i; 
done

#build and install
./configure && make && make install