May 27, 2005

Linux Advisory Watch - May 27, 2005

Author: Benjamin D. Thomas

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.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
 
  Debian: New oops packages
fix format string vulnerability
  20th, May, 2005
 
  Debian: New libconvert-uulib-perl
packages fix arbitrary code execution
  20th, May, 2005
 
  Debian: New qpopper packages
fix arbitrary file overwriting
  25th, May, 2005
 
  Debian: New qpopper packages
fix arbitrary file overwriting
  26th, May, 2005
 
   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
 
  Fedora Core 3 Update: openssl-0.9.7a-42.1
  23rd, May, 2005
 
  Fedora Core 3 Update: openssl096b-0.9.6b-21.1
  23rd, May, 2005
 
  Fedora Core 3 Update: kernel-2.6.11-1.27_FC3
  23rd, May, 2005
 
  Fedora Core 3 Update: netpbm-10.27-3.FC3
  24th, May, 2005
 
  Fedora Core 3 Update: sudo-1.6.7p5-30.2
  24th, May, 2005
 
  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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