FreeBit ServersMan 3.1.5 on Apple iPhone OS 3.1.2, and iPhone OS for iPod touch, allows remote attackers to cause a denial of service (daemon crash) via a HEAD request for the / URI.
https://exchange.xforce.ibmcloud.com/vulnerabilities/55949
http://secunia.com/advisories/38315
http://archives.neohapsis.com/archives/fulldisclosure/2010-01/0580.html