Re: [ GLSA 200801-17 ] Netkit FTP Server: Denial of Service

[Jamie Haggett <JHaggett () compugen com>]

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On 29/01/08 4:09 PM, "Raphael Marichez" <falco () gentoo org> wrote:

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Gentoo Linux Security Advisory                           GLSA 200801-17
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Netkit FTP Server: Denial of Service
      Date: January 29, 2008
      Bugs: #199206
        ID: 200801-17

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Synopsis
========

Netkit FTP Server contains a Denial of Service vulnerability.

Background
==========

net-ftp/netkit-ftpd is the Linux Netkit FTP server with optional SSL
support.

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

    -------------------------------------------------------------------
     Package              /  Vulnerable  /                  Unaffected
    -------------------------------------------------------------------
  1  net-ftp/netkit-ftpd      < 0.17-r7                     >= 0.17-r7

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

Venustech AD-LAB discovered that an FTP client connected to a
vulnerable server with passive mode and SSL support can trigger an
fclose() function call on an uninitialized stream in ftpd.c.

Impact
======

A remote attacker can send specially crafted FTP data to a server with
passive mode and SSL support, causing the ftpd daemon to crash.

Workaround
==========

Disable passive mode or SSL.

Resolution
==========

All Netkit FTP Server users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-ftp/netkit-ftpd-0.17-r7"

References
==========

  [ 1 ] CVE-2007-6263
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6263

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

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

  http://security.gentoo.org/glsa/glsa-200801-17.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 2008 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/2.5

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