Author: Benjamin D. Thomas
qpopper, gail, dmraid, openssl, kernel, netpbm, sudo, texinfo, FreeRADIUS, gdb,
ImageMagick, Net-SNMP, gxine, evolution, firefox, mozilla, ethereal, and less
tif. The distributors include Debian, Fedora, Gentoo, and Red Hat.When addressing matters of information confidentiality,
integrity, and availability, there are four perspectives that
can be taken when introducing security controls. A control
can be a protection, detection, response, or assurance mechanism.
It is not uncommonfor a single control to provide information
security on multiple levels.
Protection: A protection mechanism is used to prevent security incidents
from occurring. Examples of protection mechanisms include: firewall rules, access
control lists, encrypting packets that transverse over a network, passwords,
biometrics, etc.
Detection: It is an information security mechanism that detects when
an incident is occurring, and allows a business to adjust its course of action.
Detection mechanisms include: intrusion detection systems, virus/spam scanners,
vulnerability scanning, quotas, logging alerts, etc. Detection mechanisms often
lead into response mechanisms, and are often the same as or similar to assurance
mechanisms.
Response: A response mechanism addresses the consequences of a security
incident and helps the organization return to a normal state. Response mechanisms
can either be in the form of technical security controls (e.g. intrusion prevention
system), policy (e.g. requiring a computer emergency response team), or procedures
developed for all persons to follow during an incident.
Assurance: Assurance mechanisms give management or third parties the
ability to verify the effectiveness of the security controls in place. It may
include logging, auditing, and reporting capabilities. Assurance is important
to help justify further expenditure on information security projects.
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.
| Debian | ||
| Debian: New ppxp packages fix local root exploit |
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19th, May, 2005
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| Debian: New oops packages fix format string vulnerability |
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20th, May, 2005
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| Debian: New libconvert-uulib-perl packages fix arbitrary code execution |
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20th, May, 2005
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| Debian: New qpopper packages fix arbitrary file overwriting |
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25th, May, 2005
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| Debian: New qpopper packages fix arbitrary file overwriting |
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26th, May, 2005
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| Fedora | ||
| Fedora Core 3 Update: gail-1.8.0-3.fc3 | ||
19th, May, 2005
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| Fedora Core 3 Update: dmraid-1.0.0.rc8-FC3_2 | ||
23rd, May, 2005
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| Fedora Core 3 Update: openssl-0.9.7a-42.1 | ||
23rd, May, 2005
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| Fedora Core 3 Update: openssl096b-0.9.6b-21.1 | ||
23rd, May, 2005
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| Fedora Core 3 Update: kernel-2.6.11-1.27_FC3 | ||
23rd, May, 2005
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| Fedora Core 3 Update: netpbm-10.27-3.FC3 | ||
24th, May, 2005
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| Fedora Core 3 Update: sudo-1.6.7p5-30.2 | ||
24th, May, 2005
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| Fedora Core 3 Update: texinfo-4.8-2.1 | ||
24th, May, 2005
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| Gentoo | ||
| Gentoo: Cheetah Untrusted module search path |
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19th, May, 2005
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| Gentoo: Kommander Insecure remote script execution |
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20th, May, 2005
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| Gentoo: FreeRADIUS SQL injection and Denial of Service vulnerability |
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20th, May, 2005
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| Gentoo: gdb Multiple vulnerabilities | ||
20th, May, 2005
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| Gentoo: ImageMagick, GraphicsMagick Denial of Service |
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21st, May, 2005
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| Gentoo: Qpopper Multiple Vulnerabilities |
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23rd, May, 2005
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| Gentoo: Net-SNMP fixproc insecure temporary file creation |
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23rd, May, 2005
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| Gentoo: gxine Format string vulnerability |
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26th, May, 2005
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| Red Hat |
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| RedHat: Low: evolution security update |
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19th, May, 2005
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| RedHat: Important: firefox security update |
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23rd, May, 2005
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| RedHat: Important: mozilla security update |
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23rd, May, 2005
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| RedHat: Moderate: ethereal security update |
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24th, May, 2005
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| RedHat: Moderate: lesstif security update |
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24th, May, 2005
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| RedHat: Important: ImageMagick security update |
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25th, May, 2005
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| RedHat: Important: kernel security update |
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25th, May, 2005
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