Upgrade

Given the recent bash vulnerability disclosure[1] most linux distributions have released patches. Unfortunately Apple still expected users to compile their patches into bash. If you were using Homebrew or Macport you were in better standing and simply had to create symlinks to the patched executables. I’ve documented the steps I had to take on my Mac desktop.

Compile

1. mkdir bash
2. cd bash/
3. wget http://opensource.apple.com/tarballs/bash/bash-92.tar.gz
4. tar zxvf bash-92.tar.gz
5. cd bash-92
6. cd bash-3.2/
7. curl https://ftp.gnu.org/pub/gnu/bash/bash-3.2-patches/bash32-052 | patch -p0
8. curl https://ftp.gnu.org/pub/gnu/bash/bash-3.2-patches/bash32-053 | patch -p0
9. curl https://ftp.gnu.org/pub/gnu/bash/bash-3.2-patches/bash32-054 | patch -p0
10. cd ..
11. xcodebuild

Verify

Often times, I employ a CentOS VirtualBox virtual machine (VM) as a development, testing and staging environment, I love the flexibility of virtual environments for testing and development work before moving my work to production environments.

Recently I ran a yum update and yum upgrade on a CentOS 6.4 VM and subsequently rebooted it, only to be greeted by a blank screen following bootup. A quick search of virtual TTY terminals yielded a login prompt.