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Gentoo Linux Security Advisory                           GLSA 200511-11
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  Severity: High
     Title: linux-ftpd-ssl: Remote buffer overflow
      Date: November 13, 2005
      Bugs: #111573
        ID: 200511-11

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Synopsis
========

A buffer overflow vulnerability has been found, allowing a remote
attacker to execute arbitrary code with escalated privileges on the
local system.

Background
==========

linux-ftpd-ssl is the netkit FTP server with encryption support.

Affected packages
=================

    -------------------------------------------------------------------
     Package       /  Vulnerable  /                         Unaffected
    -------------------------------------------------------------------
  1  net-ftp/ftpd      < 0.17-r3                            >= 0.17-r3

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

A buffer overflow vulnerability has been found in the linux-ftpd-ssl
package. A command that generates an excessively long response from the
server may overrun a stack buffer.

Impact
======

An attacker that has permission to create directories that are
accessible via the FTP server could exploit this vulnerability.
Successful exploitation would execute arbitrary code on the local
machine with root privileges.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All ftpd users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-ftp/ftpd-0.17-r3"

References
==========

  [ 1 ] CVE-2005-3524
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3524

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

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

  http://security.gentoo.org/glsa/glsa-200511-11.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@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 Gentoo Foundation, 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/2.0


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