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[Suspected Spam][CVE-2008-4042] Postfix Linux-only local denial of service - PoC


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Subject: [Suspected Spam][CVE-2008-4042] Postfix Linux-only local denial of service - PoC
From: Albert =?ISO-8859-1?Q?Sellar=E8s?= <whats@wekk.net.>
To: bugtraq@securityfocus.com
Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-wIlX0+ZRGqD7KOkDUfmq"
Date: Tue, 16 Sep 2008 22:20:15 +0200
Message-Id: <1221596415.6261.21.camel@x61s.>
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Hello,

I have released this PoC for the Linux-only local denial of service
caused by the leak of epoll file descriptors.

This Proof of concept creates a pipe and adds it in postfix's epoll file
descriptor.
When the pipe is added, an endless loop will launch lots of events to
the local and master postfix processes.=20
This PoC will slowdown the system a lot.

You can find all the needed files at
http://www.wekk.net/research/CVE-2008-4042/ and
http://www.wekk.net/research/CVE-2008-3889/ and attached with this
email.

Feel free to write me for feedback, corrections, etc.

--=20
  Albert Sellar=C3=A8s        GPG id: 0x13053FFE
  http://www.wekk.net    whats_up@jabber.org=20
  Linux User: 324456     Catalunya          =20

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