AOLserver 4.5.1 writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2009-4460
http://www.ush.it/team/ush/hack_httpd_escape/adv.txt
http://www.securityfocus.com/bid/37712
http://www.securityfocus.com/archive/1/508830/100/0/threaded