GLSA 200801-17 Netkit FTP Server: Denial of Service
Posted on: 01/30/2008 12:30 AM

A new security update has been released for Gentoo Linux - Netkit FTP Server: Denial of Service. Here the announcement:

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 lt; 0.17-r7 gt;= 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 "gt;=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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