Directory Traversal Vulnerability in IIS 4.0

vendor:

IIS

by:

SecurityFocus

8.3

CVSS

HIGH

Directory Traversal

CWE

Product Name: IIS

Affected Version From: IIS 4.0

Affected Version To: IIS 4.0

Patch Exists: YES

Related CWE: CVE-1999-0256

CPE: a:microsoft:iis:4.0

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Windows

1998

Directory Traversal Vulnerability in IIS 4.0

A sample Active Server Page (ASP) script installed by default on Microsoft's Internet Information Server (IIS) 4.0 gives remote users access to view any file on the same volume as the web server that is readable by the web server. The script does not perform sufficent checks and allows files outside the sample directory to be requested. Similar vulnerabilities have been noted in ViewCode.asp, CodeBrws.asp and Winmsdp.exe.

Mitigation:

Ensure that the web server is not vulnerable to directory traversal attacks by properly validating user input.

Source

Exploit-DB raw data:

source: https://www.securityfocus.com/bid/167/info

A sample Active Server Page (ASP) script installed by default on Microsoft's Internet Information Server (IIS) 4.0 gives remote users access to view any file on the same volume as the web server that is readable by the web server.

IIS 4.0 installs a number of sample ASP scripts including one called "showcode.asp". This script allows clients to view the source of other sample scripts via a browser. The "showcode.asp" script does not perform sufficent checks and allows files outside the sample directory to be requested. In particular, it does not check for ".." in the path of the requested file.

The script takes one parameter, "source", which is the file to view. The script's default location URL is:

http://www.sitename.com/msadc/Samples/SELECTOR/showcode.asp

Similar vulnerabilities have been noted in ViewCode.asp, CodeBrws.asp and Winmsdp.exe.

http://www.sitename.com/msadc/Samples/SELECTOR/showcode.asp?source=/msadc/Samples/../../../../../boot.ini

Using CodeBrws.asp, it is possible to view Outlook mail folders: http://some-sitename-here/iissamples/exair/howitworks/codebrws.asp?source=/../../winnt/Profiles/Administrator/Application%20Data/Microsoft/Outlook%20Express/Mail/inbox.mbx