ECHU Alert #3 : Meunity 1.1 script injection vulnerability

From: dasat_private
Date: Mon Oct 14 2002 - 12:54:15 PDT

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    | Meunity 1.1 script injection vulnerability |
    ----------------------------------------------
    
    
    PROGRAM: Meunity Community System
    VULNERABLE VERSIONS: all
    IMMUNE VERSIONS: none
    SEVERITY: really high
    
    
    Tested version
    ==============
    Meunity Community System 1.1 (stable) Released with IE 5/5.5/6 and AOL.
    
    
    Description
    ============ 
    "Meunity is a sophisticated Web-based community system that uses PHP. It is object oriented, so it is easily extendible. Its database abstraction layer allows it to be compatible with multiple databases." - sourceforge.net
    In fact Meunity is a quick and simple CMS with a few options, in this options there's a forum.
    
    There's a vulnerability in the forum that allow a badly disposed member to execute code. The problem appears when a user post in the forum, a vulnerability exists in this CMS that allow a badly disposed member to perform a typical IMG attack against visitors :
    
    <IMG SRC="javascript:alert('unsecure')"> 
    
    
    The problem
    =========== 
    A badly disposed member can post a topic containing malicious code and as soon as somebody see this topic the code will be executed on his workstation.
    
    
    Vendors status
    ==============
    I contacted Zack Coburn (Meunity developper) via sourceforge.net one week ago but I had no answer back.
    
    
    Solution
    ========
    There's no secure release of Meunity Community System, so the unique solution is, at this moment, to disallow posting in Meunity forum to avoid the problem. Hope that Zack Coburn will release a new immune version as soon as possible.
    
    
    Links
    =====
    http://meunity.sourceforge.net/
    http://sourceforge.net/projects/meunity/
    
    
    This vulnerability's orginal paper can be found here: http://www.echu.org/modules/news/article.php?storyid=132
    
    
    David Suzanne (aka dAs)
    dasat_private
    http://www.echu.org 
    
    
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