You can read any .gif or .jpg on a server (readable by httpd daemon, of course) by giving a "image=../../../../path" type argument
Razvan Dragomirescu <firstname.lastname@example.org>
read protected .gif and .jpeg files (remote)
Those running version 2.3 of Muhammad A. Muquit's wwwcount
10 October 1997
From: Razvan Dragomirescu <email@example.com>
Subject: Security flaw in Count.cgi (wwwcount)
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I have found a vulnerability in Muhammad A. Muquit's wwwcount version 2.3
which allows remote users to read any GIF file on the server, regardless
of HTTP permissions set. The file must be readable by the user running the
HTTP server and it can be anywhere on the disk (not only under the
HTTP daemon's document root directory)
It appears that the bug is present ONLY in version 2.3. Older versions do
not have it.
Here's how it works:
Using an URL like
you can see (and download) any GIF image on the server.
You can't use this to download other file types because the program
checks the file format.
The use for this is not yet very clear, but some companies might have
sensitive information in GIF files (charts, drafts etc.). And of course,
this is heaven for XXX site hunters who can bypass user-level
authentication and download the image if they know the name and the path.
And one more thing. A search on AltaVista for "Count.cgi" returned about
200.000 matches. I do not know how many of them were versions 2.3.... but
even 50.000 vulnerable computers do not make me feel comfortable.
P.S. You can find information about wwwcount at
"Smile, tomorrow will be worse" (Murphy)
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The master index of all exploits is available
here (Very large file)
Or you can pick your favorite operating system:
This page is part of Fyodor's exploit
For a free program to automate scanning your network for vulnerable
hosts and services, check out my network mapping tool, nmap. Or try these Insecure.Org resouces: