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Security Incidents: Re: formmail

Re: formmail

From: Jay D. Dyson <jdyson_at_treachery.net>
Date: Sun, 2 Sep 2001 02:42:34 -0700 (PDT)

-----BEGIN PGP SIGNED MESSAGE-----

On 1 Sep 2001, Soeren Ziehe wrote:

> There was an attempt to use a formmail perl script installed on our
> server from a non-local address.
<snip>
> IF you've stayed with me until here. Has anyone seen the same access
> attempts patterns/tool signatures?

        Sure have. Sadly, many were successful at one agency I advise.
Seems that spammers have tired of simply looking for open relays and are
now looking for other avenues by which they can abuse third-party mail
systems and thus overcome the now-defunct ORBS and now-pay-for-use RBL.

        It's long since been at the point where it's inadvisable to run
a web-to-mail gateway unless you've got your script configured to allow
only specific recipients. Anything less is just leaving your system open
for abuse by the lowest form of net.scum.

- -Jay

  ( ( _______
  )) )) .--"There's always time for a good cup of coffee"--. >====<--.
C|~~|C|~~| (>------ Jay D. Dyson -- jdyson_at_treachery.net ------<) | = |-'
 `--' `--' `--- Failure is never as devastating as regret. ---' `------'

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Received on Sep 02 2001

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