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Microsoft Security Bulletin - Cumulative Patch for Internet Information Service (MS03-018)
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- - ------------------------------------------------------------------
Title:      Cumulative Patch for Internet Information Service
(811114)
Date:       28 May 2003
Software:   Microsoft(r) Windows NT(r) 4.0, Windows(r) 2000, or 
            Windows(r) XP
Impact:     Allow an attacker to execute code of their choice
Max Risk:   Important
Bulletin:   MS03-018

Microsoft encourages customers to review the Security Bulletins at: 
http://www.microsoft.com/technet/security/bulletin/MS03-018.asp
http://www.microsoft.com/security/security_bulletins/ms03-018.asp
- - ------------------------------------------------------------------

Issue:
======
This patch is a cumulative patch that includes the functionality of 
all security patches released for IIS 4.0 since Windows NT 4.0 
Service Pack 6a, and all security patches released to date for IIS 
5.0 since Windows 2000 Service Pack 2 and IIS 5.1. A complete 
listing of the patches superseded by this patch is provided below, 
in the section titled "Additional information about this patch". 
In addition to all previously released security patches, this patch 
also includes fixes for the following newly discovered security 
vulnerabilities affecting IIS 4.0, 5.0 and 5.1: 
 
- - - A Cross-Site Scripting (CSS) vulnerability affecting IIS 4.0, 
5.0 and 5.1 involving the error message that's returned to advise 
that a requested URL has been redirected. An attacker who was able 
to lure a user into clicking a link on his or her web site could 
relay a request containing script to a third-party web site running 
IIS, thereby causing the third-party site's response (still 
including the script) to be sent to the user. The script would then 
render using the security settings of the third-party site rather 
than the attacker's. 

 - A buffer overrun that results because IIS 5.0 does not correctly 
validate requests for certain types of web pages known as server 
side includes. An attacker would need the ability to upload a 
Server-side include page to a vulnerable IIS server. If the 
attacker then requested this page, a buffer overrun could result, 
which would allow the attacker to execute code of their choice on 
the server with user-level permissions. 

 - A denial of service vulnerability that results because of a flaw 
in the way IIS 4.0 and 5.0 allocate memory requests when 
constructing headers to be returned to a web client. An attacker 
would need the ability to upload an ASP page to a vulnerable IIS 
server. This ASP page, when called by the attacker, would attempt 
to return an extremely large header to the calling web client. 
Because IIS does not limit the amount of memory that can be used in 
this case, this could case IIS to fail as a result of running out 
of local memory. 
 
- - - A denial of service vulnerability that results because IIS 5.0 
and 5.1 do not correctly handle an error condition when an overly 
long WebDAV request is passed to them. As a result an attacker 
could cause IIS to fail - however both IIS 5.0 and 5.1 will by 
default restart immediately after this failure. 
There is a dependency associated with this patch - it requires the 
patch from Microsoft Security Bulletin MS02-050 to be installed. If 
this patch is installed and MS02-050 is not present, client side 
certificates will be rejected. This functionality can be restored 
by installing the MS02-050 patch.

Mitigating Factors:
====================
Redirection Cross Site Scripting: 
 - IIS 6.0 is not affected. 
 - The vulnerability could only be exploited if the attacker could 
   entice another user into visiting a web page and clicking a link
   on it, or opening an HTML mail. 
 - The target page must be an ASP page, which uses 
   Response.Redirect to redirect the client, to a new URL that is 
   based on the incoming URL of current request. 

Server Side Include Web Pages Buffer Overrun 
 - IIS 4.0, IIS 5.1 and IIS 6.0 are not affected. 
 - The IIS Lockdown tool by default disables the ssinc.dll mapping, 
   which will block this attack. 
 - By default IIS 5.0 runs under a user account and not the system 
   account. Therefore an attacker who successfully exploited the 
   vulnerability would only gain user level permissions rather than 
   administrative level permissions. 
 - An attacker must have the ability to upload files to the IIS 
   Server. 

ASP Headers Denial of Service 
 - An attacker must have the ability to upload files to the IIS 
   server. 
 - IIS 5.0 will automatically restart after failing. 
 - IIS 5.1 and IIS 6.0 are not affected. 

WebDAV Denial of Service 
 - IIS 6.0 is not affected. 
 - IIS 5.0 and 5.1 will restart automatically after this failure. 
 - The IIS Lockdown tool disables WebDAV by default, which will 
   block this attack.

Risk Rating:
============
Important

Patch Availability:
===================
 - A patch is available to fix this vulnerability. Please read the 
   Security Bulletins at
   http://www.microsoft.com/technet/security/bulletin/ms03-018.asp
   http://www.microsoft.com/security/security_bulletins/ms03-018.asp
   for information on obtaining this patch.

Acknowledgment:
===============
 - SPIDynamics SPI Labs http://www.spidynamics.com/spilabs.html 
   and NSFocus http://www.nsfocus.com/

- - ------------------------------------------------------------------
- ---

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ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE 
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 
IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE 
FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, 
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF 
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OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES 
SO THE FOREGOING LIMITATION MAY NOT APPLY.



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Using Hollywood to improve your security program

Posted on 29 July 2014.  |  Tripwire CTO Dwayne Melancon spends a lot of time on airplanes, and ends up watching a lot of movies. Some of his favorite movies are adventures, spy stuff, and cunning heist movies. A lot of these movies provide great lessons that we can apply to information security.


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