Introduction Alright guys, this is a biggie. Shellshock allows remote code execution and file creation for any server relying on bash v3.4 through v1.1. If you are using Redhat or CentOS and the default shell, your server is vulnerable. The patching history was sketchy, as well. If you patched immediately when the bug came out using CVE-2014-6271 , you are still likely vulnerable (as of right now, 9/26/2013 12:50PM EST). Run the following to apply the patch: #yum update bash You need CVE-2014-7169 if you are using Red Hat Enterprise Linux 5, 6, and 7. Note that 2014-7169 DOES NOT address the following operating systems, which as of right now are still not fully patched: Shift_JIS, Red Hat Enterprise Linux 4 Extended Life Cycle Support, Red Hat Enterprise Linux 5.6 Long Life, Red Hat Enterprise Linux 5.9 Extended Update Support, Red Hat Enterprise Linux 6.2 Advanced Update Support, and Red Hat Enterprise Linux 6.4 Extended Update Support If you applied CVE-2014-6271...