DiGi Web Server allows remote attackers to cause a denial of service (CPU consumption) via an HTTP GET request that contains a large number of / (slash) characters, which consumes resources when DiGi converts the slashes to \ (backslash) characters.
https://exchange.xforce.ibmcloud.com/vulnerabilities/15987
http://www.autistici.org/fdonato/advisory/DiGiWwwServerC1-adv.txt
http://sourceforge.net/project/shownotes.php?release_id=234261
http://securitytracker.com/alerts/2004/Apr/1009957.html