HTML Form Protocol Attack [PDF]

    Date18 Aug 2001
    3398
    Posted ByAnthony Pell
    This paper describes how some HTML browsers can be tricked through the use of HTML forms into sending more or less arbitrary data to any TCP port. This can be used to send commands to servers using ASCII based protocols like SMTP, NNTP, POP3, IMAP, IRC, and others.. . . This paper describes how some HTML browsers can be tricked through the use of HTML forms into sending more or less arbitrary data to any TCP port. This can be used to send commands to servers using ASCII based protocols like SMTP, NNTP, POP3, IMAP, IRC, and others. By sending HTML email to unsuspecting users or using a trojan HTML page, an attacker might be able to send mail or post Usenet News through servers normally not accessible to him. In special cases an attacker might be able to do other harm, e.g. deleting mail from a POP3 mailbox.
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