double dot vulnerability on a site running Informix database.

From: Beck Mr.R (bug_huntat_private)
Date: Thu Nov 22 2001 - 03:09:14 PST

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     ('binary' encoding is not supported, stored as-is)
    Mailer: SecurityFocus
    
    I found a doubledot vulnerability on a site running 
    Informix database. I can read of any file on the 
    system by putting /../ into the url. But so far I have 
    only found two sites with this problem. 
    The site is running Netscape-Enterprise/4.0 on 
    Solaris according to Netcraft.com
    
    On the site All image files are linked like this:
    http://site.com/ifx/?
    LO=00000001a6b7c8d900000003000000030004334d
    38e02543000000000001eb800000000000000000000
    0000000000000000000000000000000000000000000
    000000000000000000 
    
    This is a part of fetching an image from the 
    wbBinaries system table. The Web DataBlade 
    Module provides wbBinaries for storing large binary 
    resources such as images, sounds, and videos.  
    
    But if I want to get the content of etc directory:
    http://site.com/ifx/?LO=../../../etc/
    
    or even: 
    http://site.com/ifx/?LO=../../../etc/passwd
    
    
    So, is this a widespead bug?
    



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