Q317895: MS02-018: Patch for Cross-Site Scripting in IIS Help File Search

Article: Q317895
Product(s): Internet Information Server
Version(s): 5.0
Operating System(s): 
Keyword(s): kbSecurity kbWin2000PreSP3Fix kbWinXPpreSP1fix kbWin2000sp3fix
Last Modified: 15-AUG-2002

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Internet Information Services version 5.1 
- Microsoft Internet Information Services version 5.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

A cross-site scripting (CSS) vulnerability exists in Internet Information
Services (IIS) 5.0 and 5.1. Through this vulnerability, an attacker can send a
request to an affected server that causes a Web page that contains script to be
sent to another user. The script executes in the user's browser as though it
comes from the third-party site, which lets the script run by using the security
settings that are appropriate to the third-party Web site, and also permits the
attacker to access any data that belongs to the site.

This vulnerability can only be exploited if the user opens a Hypertext Markup
Language (HTML) mail message or visited Web site of a malicious user. The code
cannot be "injected" into an existing session.

CAUSE
=====

This vulnerability occurs because a search facility that permits IIS Help files
to be searched does not properly validate all inputs before using them.

RESOLUTION
==========

- Internet Information Services 5.1
- Internet Information Services 5.0

Internet Information Services 5.1
---------------------------------

The update for this problem is included in the "MS02-018: April 2002 Cumulative
Patch for Internet Information Services". For additional information about how
to obtain this patch, click the article number below to view the article in the
Microsoft Knowledge Base:

  Q319733 MS02-018: April 2002 Cumulative Patch for Internet Information
  Services

Internet Information Services 5.0
---------------------------------

The update for this problem is included in the "MS02-018: April 2002 Cumulative
Patch for Internet Information Services". For additional information about how
to obtain this patch, click the article number below to view the article in the
Microsoft Knowledge Base:

  Q319733 MS02-018: April 2002 Cumulative Patch for Internet Information
  Services

STATUS
======

Internet Information Services 5.1
---------------------------------

Microsoft has confirmed that this problem may cause a degree of security
vulnerability in Microsoft Internet Information Services 5.1.

Internet Information Services 5.0
---------------------------------

Microsoft has confirmed that this problem may cause a degree of security
vulnerability in Microsoft Internet Information Services 5.0.

MORE INFORMATION
================

For more information on this vulnerability, see the following Microsoft Web
site:

  http://www.microsoft.com/technet/security/bulletin/MS02-018.asp

Additional query words: security_patch kbIIS400500510April2002Rollup

======================================================================
Keywords          : kbSecurity kbWin2000PreSP3Fix kbWinXPpreSP1fix kbWin2000sp3fix 
Technology        : kbiisSearch kbiis500 kbiis510
Version           : :5.0
Issue type        : kbbug
Solution Type     : kbfix

=============================================================================