Robin Twombly A1 HTTP Server 1.0 - Directory Traversal

source: https://www.securityfocus.com/bid/2436/info

It is possible for a remote user to gain read access to directories and files outside the web root. Requesting a specially crafted URL composed of '../' sequences will disclose an arbitrary directory, appending the known filename will disclose the requested resource. 

http://target/../../../../../../Scandisk.log