How can I update BASH? I noticed that there are version 4.2.45
env x='() { :;}; echo vulnerable' bash -c "echo this is a test"
this is a test
cat /etc/redhat-release
CentOS release 5.11 (Final)
rpm -q bash
bash-3.2-33.el5_11.4
yum update bash
Setting up Update Process
No Packages marked for Update
vulnerable
then your are not vulnerable. If you still want to update you can compile bash via source. – DisplayName Oct 10 '14 at 14:07