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Linux Advisory Watch: May 6th 2005
Source: LinuxSecurity.com Contributors - Posted by Benjamin D. Thomas
This week, perhaps the most interesting articles include ethereal, prozilla,
smartlist, kdewebdev, wireless-tools, gimp, bootparamd, tcpdump, kdelibs, vte,
php, words, util-linux, lapack, gnuutils, and glibc. The distributors include
Conectiva, Debian, Fedora, Gentoo, and Red Hat.
Internet
Productivity Suite: Open Source Security - Trust Internet Productivity
Suite's open source architecture to give you the best security and productivity
applications available. Collaborating with thousands of developers, Guardian Digital
security engineers implement the most technologically advanced ideas and methods
into their design.
Review: The Book of Postfix: State-of-the-Art Message Transport
By: Pete O'Hara
I was very impressed with "The Book of Postfix" by authors Ralf Hildebrandt
and Patrick Koetter and feel that it is an incredible Postfix reference. It
gives a great overall view of the operation and management of Postfix in an
extremely systematic and practical format. It flows in a logical manner, is
easy to follow and the authors did a great job of explaining topics with attention
paid to real world applications and how to avoid many of the associated pitfalls.
I am happy to have this reference in my collection.
The authors have taken the time to clearly answer the key questions that are
of real practical value. There is no excessive or superflous material here that,
although may good to know, won't divert attention from the topic of configuring
a solid MTA. The book is very well focused and the authors' hard work is obvious.
There are sections where someone else may have left good enough alone but they
went the extra mile to make sure that this book answered the important questions
fully.
"The Book of Postfix" starts with "A Postmaster's Primer To Email" and continues
through all of the key topics in a sensible progression so that even if you
are fairly new to administering email you are taught in a sequential manner
that promotes understanding. The comprehensive list of topics encompasses single
and multiple domain servers, dial-ups, SMTP restrictions, internal and external
content filters, mail gateways, SMTP proxy, SMTP authentication, SASL, LDAP,
SQL integration, Transport Layer Security, chroots, rate limiting, performance
tuning, and trouble shooting. It covers a good amount of ground.
The numerous "NOTE" and "CAUTION" sections provide great additional detail
to real world scenarious that I found extremely relevant and useful. For each
topic there is also an invaluable "TESTING" section so that you can verify for
yourself that you are in fact getting the expected behavior. The imperative
topic of security is always kept in mind in the confugrations and the accompanying
diagrams and flow charts do an excellent job of enhancing the text and providing
extra clarity.
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.
A buffer overflow was found in the kimgio library for KDE 3.3.1.
An attacker could create a carefully crafted PCX image in such a way that
it would cause kimgio to execute arbitrary code when processing the image.
http://www.linuxsecurity.com/content/view/119034
This update fixes a compatibility issue between the PHP "snmp"
extension (in the php-snmp package) and the recent upgrade of the net-snmp
library=20 to version 5.2.1
http://www.linuxsecurity.com/content/view/119044
This update fixes problems in some lapack libraries (problems
with compiler optimalization). This version contains all patches present
in fc4 lapack version.
http://www.linuxsecurity.com/content/view/119060
The Oops! proxy server contains a remotely exploitable format
string vulnerability, which could potentially lead to the execution of
arbitrary code.
http://www.linuxsecurity.com/content/view/119063
Red
Hat
RedHat: Low: glibc security update
28th, April, 2005
Updated glibc packages that address several bugs 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/119010
RedHat: Important: kernel security update
28th, April, 2005
Updated kernel packages are now available as part of ongoing
support and maintenance of Red Hat Enterprise Linux version 2.1. This
is the seventh regular update. This security advisory has been rated as
having important security impact by the Red Hat Security Response Team.
http://www.linuxsecurity.com/content/view/119011
RedHat: Important: kernel security update
28th, April, 2005
Updated kernel packages are now available as part of ongoing
support and maintenance of Red Hat Enterprise Linux version 2.1 for 64-bit
architectures. This is the seventh regular update. This security advisory
has been rated as having important security impact by the Red Hat Security
Response Team.
http://www.linuxsecurity.com/content/view/119012
RedHat: Important: Mozilla security update
28th, April, 2005
Updated Mozilla packages that fix various security bugs 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/119014
RedHat: Moderate: PHP security update
28th, April, 2005
Updated PHP packages that fix various security issues 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/119015
RedHat: Low: nasm security update
4th, May, 2005
An updated nasm package that fixes multiple security issues
is 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/119049
RedHat: Moderate: evolution security
update
4th, May, 2005
Updated evolution packages that fix various security issues
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/119050
RedHat: Moderate: PHP security update
4th, May, 2005
Updated PHP packages that fix various security issues 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/119051
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