FW: IE https certificate attack

From: August September (august_septemberat_private)
Date: Wed Dec 26 2001 - 03:57:16 PST

  • Next message: Donald King: "Re: IE https certificate attack"

    Hello,
    
    
    I've been reading this thread and it remembered me a similar case (I don't 
    know if it really classifies as a bug, so I haven't reported it).
    
    Once I had to embed a non-secure object coming from another server to my 
    secure page (only available over https), then i did the following: i wrote a 
    simple redirect script like this
    
    <?php
    
    header("Location:".$url);
    
    ?>
    
    and on the real page asked object through that script like this
    
    <img src="redirect.php?url=http://non.secure.server">
    
    
    Both IE and Mozilla displayed this object without any warning.
    
    
    August
    
    
    
    >-----Original Message-----
    >From: security@e-matters.de [mailto:security@e-matters.de]
    >Sent: Saturday, December 22, 2001 4:37 PM
    >To: bugtraqat_private
    >Subject: IE https certificate attack
    >
    >
    >                            e-matters GmbH
    >                           www.e-matters.de
    >
    >                       -= Security  Advisory =-
    >
    >
    >
    >      Advisory: Interner Explorer HTTPS certificate attack
    >  Release Date: 2001/12/22        Author: Stefan Esser 
    >[s.esser@e-matters.de]
    >
    >   Application: Microsoft Internet Explorer 5.0/5.5/6.0
    >      Severity: Vulnerability in IE's SSL Certificate handling allows
    >                undetected SSL Man-In-The-Middle attacks
    >          Risk: Very High
    >Vendor Status: Notified
    >     Reference: http://security.e-matters.de/advisories/012001.html
    >
    
    
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