The (a) Quick 'n Easy Web Server before 3.1.1 and (b) Baby ASP Web Server 2.7.2 allows remote attackers to obtain the source code of ASP files via (1) . (dot) and (2) space characters in the extension of a URL.
https://exchange.xforce.ibmcloud.com/vulnerabilities/25418
https://exchange.xforce.ibmcloud.com/vulnerabilities/25417
http://www.vupen.com/english/advisories/2006/1088
http://www.vupen.com/english/advisories/2006/1085
http://www.securityfocus.com/bid/17222
http://www.securityfocus.com/archive/1/428667/100/0/threaded
http://securityreason.com/securityalert/624
http://secunia.com/secunia_research/2006-19/advisory/