April 8, 2005

Linux Advisory Watch - April 8, 2005

Author: Benjamin D. Thomas

This week, advisories were released for MySQL, samba, ImageMagick, krb5, remstats,
wu-ftpd, sharutils, util-linux, words, gaim, e2fsprogs, subversion, ipsec-tools,
libexif, htdig, grip, gtk2, tetex, curl, gdk-pixbuf, and XFree86. The distributors
include Conectiva, Debian, Fedora, Gentoo, Mandrake, Red Hat, and SuSE.Measuring Security IT Success

In a time where budgets are constrained and Internet threats are
on the rise, it is important for organizations to invest in network
security applications that will not only provide them with powerful
functionality but also a rapid return on investment.

In most organizations IT success is generally calculated through
effectiveness, resource usage and, most importantly, how quickly
the investment can be returned. To correctly quantify the ROI of
information technology, organizations usually measure cost savings
and increased profits since the initial implementation.
Additionally, ROI can also be affected based on the overall
impact the investment has on employee productivity and overall
work environment of the company.

With regards to security IT purchases, however, it is much more
difficult to calculate an accurate ROI. When it comes to securing
a corporate network, it is nearly impossible to assign a dollar
amount to the level of security necessary to keep organizations
safe from increasing Internet threats. Making incorrect decisions
in this area could lead to an exhaustion of resources or an
oversight in specific areas needing protection, potentially
resulting in debilitating and costly security breaches.

To avoid such situations, it is essential that all organizations
invest in a solid infrastructure with flexibility and room for
future expansion. In addition, leveraging open source solutions
consistently deliver greater ROI, substantially increase
security protection, and deliver better flexibility. Such an
investment will fundamentally change how information is
managed and present results in a more quantifiable metric
when presenting to them management.

Dave Wreski

CEO Guardian Digital, Inc
http://www.guardiandigital.com

LinuxSecurity.com
Feature Extras:

Getting
to Know Linux Security: File Permissions
- Welcome to the first
tutorial in the 'Getting to Know Linux Security' series. The topic explored
is Linux file permissions. It offers an easy to follow explanation of how
to read permissions, and how to set them using chmod. This guide is intended
for users new to Linux security, therefore very simple. If the feedback is
good, I'll consider creating more complex guides for advanced users. Please
let us know what you think and how these can be improved.

The
Tao of Network Security Monitoring: Beyond Intrusion Detection

- To be honest, this was one of the best books that I've read on network security.
Others books often dive so deeply into technical discussions, they fail to
provide any relevance to network engineers/administrators working in a corporate
environment. Budgets, deadlines, and flexibility are issues that we must all
address. The Tao of Network Security Monitoring is presented in such a way
that all of these are still relevant.

Encrypting
Shell Scripts
- Do you have scripts that contain sensitive information
like passwords and you pretty much depend on file permissions to keep it secure?
If so, then that type of security is good provided you keep your system secure
and some user doesn't have a "ps -ef" loop running in an attempt to capture
that sensitive info (though some applications mask passwords in "ps" output).

 

Take advantage of our Linux Security discussion
list!
This mailing list is for general security-related questions and comments.
To subscribe send an e-mail to security-discuss-request@linuxsecurity.com
with "subscribe" as the subject.

Thank you for reading the LinuxSecurity.com
weekly security newsletter. The purpose of this document is to provide our readers
with a quick summary of each week's most relevant Linux security headline
.


   Conectiva
  Conectiva: kernel Kernel fixes
  31st, March, 2005

The Linux kernel is responsible for handling the basic functions
of the GNU/Linux operating system.

http://www.linuxsecurity.com/content/view/118764

 
  Conectiva: MySQL Fixes for several mysql
vulnerabilities
  4th, April, 2005

MySQL[1] is a very popular SQL database. This announcement fixes
several vulnerabilities discovered in MySQL.

http://www.linuxsecurity.com/content/view/118787

 
   Debian
  Debian: New samba packages fix arbitrary
code execution
  31st, March, 2005

Updated package.

http://www.linuxsecurity.com/content/view/118763

 
  Debian: New ImageMagick packages fix
several vulnerabilities
  1st, April, 2005

Updated package.

http://www.linuxsecurity.com/content/view/118772

 
  Debian: New krb5 packages fix arbitrary
code execution
  1st, April, 2005

Updated package.

http://www.linuxsecurity.com/content/view/118775

 
  Debian: New remstats packages fix several
vulnerabilities
  4th, April, 2005

Updated package.

http://www.linuxsecurity.com/content/view/118782

 
  Debian: New wu-ftpd packages fix denial
of service
  4th, April, 2005

Updated package.

http://www.linuxsecurity.com/content/view/118786

 
   Fedora
  Fedora Core 2 Update: sharutils-4.2.1-18.1.FC2
  1st, April, 2005

Updated package.

http://www.linuxsecurity.com/content/view/118777

 
  Fedora Core 3 Update: sharutils-4.2.1-22.1.FC3
  1st, April, 2005

Updated package.

http://www.linuxsecurity.com/content/view/118778

 
  Fedora Core 3 Update: util-linux-2.12a-21
  4th, April, 2005

Updated package.

http://www.linuxsecurity.com/content/view/118791

 
  Fedora Core 3 Update: util-linux-2.12a-23
  4th, April, 2005

Updated package.

http://www.linuxsecurity.com/content/view/118793

 
  Fedora Core 3 Update: words-3.0-2.2
  4th, April, 2005

Updated package.

http://www.linuxsecurity.com/content/view/118794

 
  Fedora Core 2 Update: gaim-1.2.1-1.fc2
  5th, April, 2005

Updated package.

http://www.linuxsecurity.com/content/view/118800

 
  Fedora Core 3 Update: gaim-1.2.1-1.fc3
  5th, April, 2005

Updated package.

http://www.linuxsecurity.com/content/view/118801

 
  Fedora Core 3 Update: e2fsprogs-1.36-1.FC3.1
  5th, April, 2005

Updated package.

http://www.linuxsecurity.com/content/view/118802

 
  Fedora Core 3 Update: system-config-printer-0.6.116.1.4-1
  5th, April, 2005

Bug-fix release.

http://www.linuxsecurity.com/content/view/118803

 
  Fedora Core 3 Update: mysql-3.23.58-16.FC3.1
  5th, April, 2005

Updated package.

http://www.linuxsecurity.com/content/view/118807

 
  Fedora Core 2 Update: mysql-3.23.58-16.FC2.1
  5th, April, 2005

Updated package.

http://www.linuxsecurity.com/content/view/118808

 
  Fedora Core 3 Update: subversion-1.1.4-1.1
  6th, April, 2005

This update includes the latest release of Subversion 1.1, including
a number of bug fixes.

http://www.linuxsecurity.com/content/view/118816

 
   Gentoo
  Gentoo: Gaim Denial of Service issues
  6th, April, 2005

Gaim contains multiple vulnerabilities that can lead to a Denial
of Service.

http://www.linuxsecurity.com/content/view/118811

 
  Gentoo: sharutils Insecure temporary
file creation
  6th, April, 2005

The unshar utility is vulnerable to symlink attacks, potentially
allowing a local user to overwrite arbitrary files.

http://www.linuxsecurity.com/content/view/118818

 
   Mandrake
  Mandrake: Updated ipsec-tools packages
  31st, March, 2005

A bug was discovered in the way that the racoon daemon handled
incoming ISAKMP requests. It is possible that an attacker could crash
the racoon daemon by sending a specially crafted ISAKMP packet. The updated
packages have been patched to correct these issues.

http://www.linuxsecurity.com/content/view/118767

 
  Mandrake: Updated libexif packages fix
  31st, March, 2005

A buffer overflow was discovered in the way libexif parses EXIF
tags. An attacker could exploit this by creating a special EXIF image
file which could cause image viewers linked against libexif to crash.
The updated packages have been patched to correct these issues.

http://www.linuxsecurity.com/content/view/118768

 
  Mandrake: Updated htdig packages fix
  31st, March, 2005

A cross-site scripting vulnerability in ht://dig was discovered
by Michael Krax. The updated packages have been patched to correct this
issue.

http://www.linuxsecurity.com/content/view/118769

 
  Mandrake: Updated ImageMagick packages
  1st, April, 2005

A format string vulnerability was discovered in ImageMagick,
in the way it handles filenames. An attacker could execute arbitrary code
on a victim's machine provided they could trick them into opening a file
with a special name (CAN-2005-0397). As well, Andrei Nigmatulin discovered
a heap-based buffer overflow in ImageMagick's image handler. An attacker
could create a special PhotoShop Document (PSD) image file in such a way
that it would cause ImageMagick to execute arbitray code when processing
the image (CAN-2005-0005). Other vulnerabilities were discovered in ImageMagick
versions prior to 6.0: A bug in the way that ImageMagick handles TIFF
tags was discovered.

http://www.linuxsecurity.com/content/view/118779

 
  Mandrake: Updated grip packages fix
  1st, April, 2005

A buffer overflow bug was found by Dean Brettle in the way that
grip handles data returned by CDDB servers. If a user connected to a malicious
CDDB server, an attacker could execute arbitrary code on the user's machine.
The updated packages have been patched to correct these issues.

http://www.linuxsecurity.com/content/view/118780

 
   Red
Hat
  RedHat: Important: gtk2 security update
  1st, April, 2005

Updated gtk2 packages that fix a double free vulnerability are
now available. This update has been rated as having important security
impact by the Red Hat Security Response Team.

http://www.linuxsecurity.com/content/view/118773

 
  RedHat: Moderate: tetex security update
  1st, April, 2005

Updated tetex packages that fix several integer overflows are
now available. This update has been rated as having moderate security
impact by the Red Hat Security Response Team.

http://www.linuxsecurity.com/content/view/118774

 
  RedHat: Low: curl security update
  5th, April, 2005

Updated curl packages are now available. This update has been
rated as having low security impact by the Red Hat Security Response Team.

http://www.linuxsecurity.com/content/view/118804

 
  RedHat: Important: gdk-pixbuf security
update
  5th, April, 2005

Updated gdk-pixbuf packages that fix a double free vulnerability
are now available. This update has been rated as having important security
impact by the Red Hat Security Response Team.

http://www.linuxsecurity.com/content/view/118805

 
  RedHat: Important: mysql-server security
update
  5th, April, 2005

Updated mysql-server packages that fix several vulnerabilities
are now available. This update has been rated as having important security
impact by the Red Hat Security Response Team.

http://www.linuxsecurity.com/content/view/118806

 
  RedHat: Moderate: XFree86 security update
  6th, April, 2005

Updated XFree86 packages that fix a libXpm integer overflow
flaw and a number of bugs are now available. This update has been rated
as having moderate security impact by the Red Hat Security Response Team.

http://www.linuxsecurity.com/content/view/118814

 
  RedHat: Moderate: kdelibs security update
  6th, April, 2005

Updated kdelibs packages that fix a local denial of service
issue are now available. This update has been rated as having moderate
security impact by the Red Hat Security Response Team.

http://www.linuxsecurity.com/content/view/118815

 
   SuSE
  SuSE: ipsec-tools remote denial of service
  31st, March, 2005

Racoon is a ISAKMP key management daemon used in IPsec setups.

http://www.linuxsecurity.com/content/view/118765

 
  SuSE: kernel local privilege escalation
  5th, April, 2005

This Linux kernel security update fixes a problem within the
Bluetooth kernel stack which can be used by a local attacker to gain root
access or crash the machine.

http://www.linuxsecurity.com/content/view/118795

 
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