full-disclosure - [ GLSA 200407-04 ] Pure-FTPd: Potential DoS when maximum connections is reached

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From: koon at gentoo.org (Thierry Carrez)
Subject: [ GLSA 200407-04 ] Pure-FTPd: Potential DoS when maximum connections
 is reached

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Gentoo Linux Security Advisory                           GLSA 200407-04
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Pure-FTPd: Potential DoS when maximum connections is
            reached
      Date: July 04, 2004
      Bugs: #54590
        ID: 200407-04

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Synopsis
========

Pure-FTPd contains a bug potentially allowing a Denial of Service
attack when the maximum number of connections is reached.

Background
==========

Pure-FTPd is a fast, production-quality and standards-compliant FTP
server.

Affected packages
=================

    -------------------------------------------------------------------
     Package            /   Vulnerable   /                  Unaffected
    -------------------------------------------------------------------
  1  net-ftp/pure-ftpd       <= 1.0.18                    >= 1.0.18-r1

Description
===========

Pure-FTPd contains a bug in the accept_client function handling the
setup of new connections.

Impact
======

When the maximum number of connections is reached an attacker could
exploit this vulnerability to perform a Denial of Service attack.

Workaround
==========

There is no known workaround at this time. All users are encouraged to
upgrade to the latest available version.

Resolution
==========

All Pure-FTPd users should upgrade to the latest stable version:

    # emerge sync

    # emerge -pv ">=net-ftp/pure-ftpd-1.0.18-r1"
    # emerge ">=net-ftp/pure-ftpd-1.0.18-r1"

References
==========

  [ 1 ] Pure-FTPd website
        http://www.pureftpd.org

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

    http://security.gentoo.org/glsa/glsa-200407-04.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@...too.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2004 Gentoo Technologies, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/1.0

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