The OpenNET Project
 
Search (keywords):  SOFT ARTICLES TIPS & TRICKS SECURITY
LINKS NEWS MAN DOCUMENTATION


[ GLSA 200611-05 ] Netkit FTP Server: Privilege escalation


<< Previous INDEX Search src / Print Next >>
Date: Fri, 10 Nov 2006 15:24:07 +0100
From: Raphael Marichez <falco@gentoo.org.>
To: [email protected]
Subject: [ GLSA 200611-05 ] Netkit FTP Server: Privilege escalation
Message-ID: <20061110142407.GC8701@falco.falcal.net.>
Mail-Followup-To: [email protected],
        [email protected], [email protected],
        [email protected]
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
        protocol="application/pgp-signature"; boundary="5/uDoXvLw7AC5HRs"
Content-Disposition: inline
Organization: Gentoo Linux Security Team
User-Agent: mutt-ng/devel-r804 (Linux)
X-Virus-Scanned: antivirus-gw at tyumen.ru


--5/uDoXvLw7AC5HRs
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 200611-05
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                            http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


  Severity: High
     Title: Netkit FTP Server: Privilege escalation
      Date: November 10, 2006
      Bugs: #150292
        ID: 200611-05

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


Synopsis
========

An incorrect seteuid() call could allow an FTP user to access some
files or directories that would normally be inaccessible.

Background
==========

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

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

    -------------------------------------------------------------------
     Package       /  Vulnerable  /                         Unaffected
    -------------------------------------------------------------------
  1  net-ftp/ftpd      < 0.17-r4                            >= 0.17-r4


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

Paul Szabo reported that an incorrect seteuid() call after the chdir()
function can allow an attacker to access a normally forbidden
directory, in some very particular circumstances, for example when the
NFS-hosted targetted directory is not reachable by the client-side root
user. Additionally, some potentially exploitable unchecked setuid()
calls were also fixed.

Impact
======

A local attacker might craft his home directory to gain access through
ftpd to normally forbidden directories like /root, possibly with
writing permissions if seteuid() fails and if the ftpd configuration
allows that. The unchecked setuid() calls could also lead to a root FTP
login, depending on the FTP server configuration.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

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

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-ftp/ftpd-0.17-r4"


References
==========

  [ 1 ] CVE-2006-5778
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5778

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

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

  http://security.gentoo.org/glsa/glsa-200611-05.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
[email protected] or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2006 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

--5/uDoXvLw7AC5HRs
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.5 (GNU/Linux)

iD8DBQFFVIuHIS4GNEW6wBQRAiSkAKCGiMlInEHUdw2aBLEYtptLKtaBvQCfYrFj
ULxDiXuekh1xRnp24JFAT2o=
=ufus
-----END PGP SIGNATURE-----

--5/uDoXvLw7AC5HRs--


<< Previous INDEX Search src / Print Next >>



Партнёры:
PostgresPro
Inferno Solutions
Hosting by Hoster.ru
Хостинг:

Закладки на сайте
Проследить за страницей
Created 1996-2024 by Maxim Chirkov
Добавить, Поддержать, Вебмастеру