GoAhead Web Server 2.1.7 and earlier allows remote attackers to obtain the source code of ASP files via a URL terminated with a /, \, %2f (encoded /), %20 (encoded space), or %00 (encoded null) character, which returns the ASP source code unparsed.
https://exchange.xforce.ibmcloud.com/vulnerabilities/10885
http://www.procheckup.com/security_info/vuln_pr0213.html
http://www.procheckup.com/PDFs/ProCheckUp_Vulns_2002.pdf
http://www.kb.cert.org/vuls/id/RGII-7MWKZ3
http://www.kb.cert.org/vuls/id/975041
http://www.kb.cert.org/vuls/id/124059
http://secunia.com/advisories/7741
http://data.goahead.com/Software/Webserver/2.1.8/release.htm#bug-with-urls-like-asp