| Plugin ID | 316 |
| Plugin name | Microsoft Internet Information Server 4.0 non existent file .idq path disclosure |
| Plugin filename | Microsoft Internet Information Server 4.0 non existent file .idq path disclosure.plugin |
| Plugin filesize | 2975 bytes |
| Plugin family | HTTP |
| Plugin created name | Marc Ruef |
| Plugin created email | marc.ruef at computec.ch |
| Plugin created web | http://www.computec.ch |
| Plugin created company | computec.ch |
| Plugin created date | 2005/01/05 |
| Plugin version | 1.0 |
| Plugin protocol | tcp |
| Plugin port | 80 |
| Plugin procedure detection | open|send HEAD / HTTP/1.0\n\n|sleep|close|pattern_exists HTTP/#.# ### *Server: Microsoft-IIS/4.0* |
| Plugin procedure exploit | open|send GET /anything.idq HTTP/1.0\n\n|sleep|close|pattern_exists *[a-z]\:\\*anything* |
| Plugin detection accuracy | 80 |
| Plugin exploit accuracy | 90 |
| Plugin comment | The NASL script is Copyright (C) 2000 Filipe Custodio |
| Bug produced name | Microsoft |
| Bug produced email | info at microsoft dot com |
| Bug produced web | http://www.microsoft.com |
| Bug affected | Microsoft Internet Information Server 4.0 |
| Bug not affected | Other versions of the Microsoft Internet Information Server or other web servers |
| Bug vulnerability class | Configuration |
| Bug description | IIS 4.0 allows a remote attacker to obtain the real pathname of the document root by requesting non-existent files with .ida or .idq extensions. An attacker may use this flaw to gain more information about the remote host, and hence make more focused attacks. |
| Bug solution | Select 'Preferences ->Home directory ->Application', and check the checkbox 'Check if file exists' for the ISAPI mappings of your server. |
| Bug fixing time | Approx. 15 minutes |
| Bug exploit availability | Yes |
| Bug exploit url | http://www.securityfocus.com/bid/1065/exploit/ |
| Bug remote | Yes |
| Bug local | Yes |
| Bug severity | Low |
| Bug popularity | 8 |
| Bug simplicity | 7 |
| Bug impact | 4 |
| Bug risk | 6 |
| Bug Nessus risk | Low |
| Bug check tools | Nessus can check this flaw with the plugin 10492 (IIS IDA/IDQ Path Disclosure). |
| Source CVE | CAN-2000-0071 |
| Source SecurityFocus BID | 1065 |
| Source Nessus ID | 10492 |
| Source Literature | Hacking Exposed: Network Security Secrets & Solutions, Stuart McClure, Joel Scambray and George Kurtz, February 25, 2003, 4th Edition, McGraw-Hill Osborne Media, ISBN 0072227427 |
| Source Misc. | http://www.computec.ch |