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Linux Advisory Watch: May 27th 2005 Print E-mail
User Rating:      How can I rate this item?
Source: LinuxSecurity.com Contributors - Posted by Benjamin D. Thomas   
Linux Advisory Watch This week, perhaps the most interesting articles include ppxp, oops, libconvert, 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.


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.
Information Security Techniques
By: Benjamin D. Thomas

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
  19th, May, 2005

Updated package.

http://www.linuxsecurity.com/content/view/119151
 
  Debian: New oops packages fix format string vulnerability
  20th, May, 2005

Updated package.

http://www.linuxsecurity.com/content/view/119158
 
  Debian: New libconvert-uulib-perl packages fix arbitrary code execution
  20th, May, 2005

Updated package.

http://www.linuxsecurity.com/content/view/119164
 
  Debian: New qpopper packages fix arbitrary file overwriting
  25th, May, 2005

Updated package.

http://www.linuxsecurity.com/content/view/119194
 
  Debian: New qpopper packages fix arbitrary file overwriting
  26th, May, 2005

Updated package.

http://www.linuxsecurity.com/content/view/119199
 
   Fedora
  Fedora Core 3 Update: gail-1.8.0-3.fc3
  19th, May, 2005

The tamil translations in the gail package were not encoded in UTF-8.

http://www.linuxsecurity.com/content/view/119155
 
  Fedora Core 3 Update: dmraid-1.0.0.rc8-FC3_2
  23rd, May, 2005

Updated packages.

http://www.linuxsecurity.com/content/view/119173
 
  Fedora Core 3 Update: openssl-0.9.7a-42.1
  23rd, May, 2005

Updated package.

http://www.linuxsecurity.com/content/view/119174
 
  Fedora Core 3 Update: openssl096b-0.9.6b-21.1
  23rd, May, 2005

Updated package.

http://www.linuxsecurity.com/content/view/119175
 
  Fedora Core 3 Update: kernel-2.6.11-1.27_FC3
  23rd, May, 2005

Updated package.

http://www.linuxsecurity.com/content/view/119176
 
  Fedora Core 3 Update: netpbm-10.27-3.FC3
  24th, May, 2005

Updated package.

http://www.linuxsecurity.com/content/view/119183
 
  Fedora Core 3 Update: sudo-1.6.7p5-30.2
  24th, May, 2005

Updated package.

http://www.linuxsecurity.com/content/view/119186
 
  Fedora Core 3 Update: texinfo-4.8-2.1
  24th, May, 2005

This is an upgrade to 4.8, which fixes a segmentation fault problem.

http://www.linuxsecurity.com/content/view/119187
 
   Gentoo
  Gentoo: Cheetah Untrusted module search path
  19th, May, 2005

Cheetah contains a vulnerability in the module importing code that can allow a local user to gain escalated privileges.

http://www.linuxsecurity.com/content/view/119152
 
  Gentoo: Kommander Insecure remote script execution
  20th, May, 2005

The fixed ebuild proposed in the original version of this Security Advisory did not address all the vulnerabilities.

http://www.linuxsecurity.com/content/view/119159
 
  Gentoo: FreeRADIUS SQL injection and Denial of Service vulnerability
  20th, May, 2005

The FreeRADIUS server is vulnerable to an SQL injection attack and a buffer overflow, possibly resulting in disclosure and modification of data and Denial of Service.

http://www.linuxsecurity.com/content/view/119160
 
  Gentoo: gdb Multiple vulnerabilities
  20th, May, 2005

Multiple vulnerabilities have been discovered in the GNU debugger, potentially allowing the execution of arbitrary code.

http://www.linuxsecurity.com/content/view/119161
 
  Gentoo: ImageMagick, GraphicsMagick Denial of Service
  21st, May, 2005

ImageMagick and GraphicsMagick utilities can be abused to perform a Denial of Service attack.

http://www.linuxsecurity.com/content/view/119165
 
  Gentoo: Qpopper Multiple Vulnerabilities
  23rd, May, 2005

Qpopper contains two vulnerabilities allowing an attacker to overwrite arbitrary files and create files with insecure permissions.

http://www.linuxsecurity.com/content/view/119177
 
  Gentoo: Net-SNMP fixproc insecure temporary file creation
  23rd, May, 2005

Net-SNMP creates temporary files in an insecure manner, possibly allowing the execution of arbitrary code.

http://www.linuxsecurity.com/content/view/119178
 
  Gentoo: gxine Format string vulnerability
  26th, May, 2005

A format string vulnerability in gxine could allow a remote attacker to execute arbitrary code.

http://www.linuxsecurity.com/content/view/119200
 
   Red Hat
  RedHat: Low: evolution security update
  19th, May, 2005

Updated evolution packages that fix various 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/119153
 
  RedHat: Important: firefox security update
  23rd, May, 2005

Updated firefox 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/119167
 
  RedHat: Important: mozilla security update
  23rd, May, 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/119168
 
  RedHat: Moderate: ethereal security update
  24th, May, 2005

Updated Ethereal packages that fix various security vulnerabilities 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/119188
 
  RedHat: Moderate: lesstif security update
  24th, May, 2005

Updated lesstif packages that fix flaws in the Xpm library are now available for Red Hat Enterprise Linux 2.1. This update has been rated as having Moderate security impact by the Red Hat Security Response Team.

http://www.linuxsecurity.com/content/view/119189
 
  RedHat: Important: ImageMagick security update
  25th, May, 2005

Updated ImageMagick packages that fix a buffer overflow issue 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/119195
 
  RedHat: Important: kernel security update
  25th, May, 2005

Updated kernel packages that fix several security issues in the Red Hat Enterprise Linux 3 kernel are now available. This security advisory has been rated as having important security impact by the Red Hat Security Response Team.

http://www.linuxsecurity.com/content/view/119196
 

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