NT IIS4 Remote Web-Based Administration Vulnerability
BID:189
Info
NT IIS4 Remote Web-Based Administration Vulnerability
| Bugtraq ID: | 189 |
| Class: | Access Validation Error |
| CVE: |
CVE-1999-1538 |
| Remote: | Yes |
| Local: | No |
| Published: | Jan 14 1999 12:00AM |
| Updated: | Jul 11 2009 12:16AM |
| Credit: | This vulnerability was posted to NTBugtraq by David Litchfield (Mnemonix). |
| Vulnerable: |
Microsoft IIS 4.0 |
| Not Vulnerable: |
Microsoft IIS 3.0 Microsoft IIS 2.0 |
Discussion
NT IIS4 Remote Web-Based Administration Vulnerability
Web-based administration for IIS 4.0 is, by default, limited to the local loopback address, 127.0.0.1. In instances where IIS4.0 was installed as an upgrade to IIS 2.0 or 3.0, a legacy ISAPI DLL (ISM.DLL) is left in the /scripts/iisadmin directory. An attacker may call this DLL via the following syntax:
http://www.server.com/scripts/iisadmin/ism.dll?http/dir
This URL prompts the user for a username/password to access the remote administration console. Although approved access does not permit the user to commit changes to the IIS server, it may allow them to gather sensitive information about the web server and its configuration.
Web-based administration for IIS 4.0 is, by default, limited to the local loopback address, 127.0.0.1. In instances where IIS4.0 was installed as an upgrade to IIS 2.0 or 3.0, a legacy ISAPI DLL (ISM.DLL) is left in the /scripts/iisadmin directory. An attacker may call this DLL via the following syntax:
http://www.server.com/scripts/iisadmin/ism.dll?http/dir
This URL prompts the user for a username/password to access the remote administration console. Although approved access does not permit the user to commit changes to the IIS server, it may allow them to gather sensitive information about the web server and its configuration.
Exploit / POC
NT IIS4 Remote Web-Based Administration Vulnerability
see discussion
see discussion