Bugtraq: Re: Resend: Sendmail filter to prevent SMTP exploitation of the Guninski hole

["John D. Hardin" <jhardin () WOLFENET COM>]

On Wed, 20 Sep 2000, Bennett Samowich wrote:

> Perhaps it is time to revisit the content filters on our mail
> servers before the inevitable exploit is released and until proper
> resolution can be made.  By using sendmail's libmilter, it is
> possible to reject messages with .dll attachments (see below).  I
> am sure that there are other methods as well (e.g. procmail,
> etc.).
Let me chime in here:

  http://www.impsec.org/email-tools/procmail-security.html

--
 John Hardin KA7OHZ   ICQ#15735746   http://www.wolfenet.com/~jhardin/
 jhardin () wolfenet com      pgpk -a finger://gonzo.wolfenet.com/jhardin
  768: 0x41EA94F5 - A3 0C 5B C2 EF 0D 2C E5  E9 BF C8 33 A7 A9 CE 76
 1024: 0xB8732E79 - 2D8C 34F4 6411 F507 136C  AF76 D822 E6E6 B873 2E79
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  "Bother," said Pooh as he struggled with /etc/sendmail.cf, "it never
  does quite what I want. I wish Christopher Robin was here."
                                -- Peter da Silva in a.s.r
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