nixCraft Linux Sys Admin Blog

Firefox 3 Set To Release on June 17th 2008

Posted: 12 Jun 2008 04:01 AM CDT

Firefox version 3, the best web browser set to release on June 17th 2008 Mozilla has announced the date today:

After more than 34 months of active development, and with the contributions of thousands, we're proud to announce that weâ€™re ready. It is our expectation to ship Firefox 3 this upcoming Tuesday, June 17th. Put on your party hats and get ready to download Firefox 3 â€" the best web browser, period.

=> Coming Tuesday, June 17th: Firefox 3

Security: Perl, XFree86, xorg-x11-server and other Update For Red Hat Linux (RHEL)

Posted: 11 Jun 2008 08:33 PM CDT

Red Hat today issued software updates to fix at least 5-6 security vulnerabilities in various versions of its Linux distribution. These update has been rated as having important security impact. It is recommended that you upgrade (patch) your system using yum command.

A flaw was found in Perl's regular expression engine. A specially crafted regular expression with Unicode characters could trigger a buffer overflow, causing Perl to crash, or possibly execute arbitrary code with the privileges of the user running Perl.

An input validation flaw was discovered in X.org's Security and Record extensions. A malicious authorized client could exploit this issue to cause a denial of service (crash) or, potentially, execute arbitrary code with root privileges on the X.Org server.

How do I patch my RHEL system?

Simply, type the following command:
# yum update

How do I patch my Debian Linux system?

Debian also updated many of its package to address these vulnerabilities in the X Window system. You can upgrade your system by typing following commands:
# apt-get update # apt-get upgrade

I'm sure other distros will also release updates.

APF Linux Firewall Open Port 22 From Specific / Selected IP Address Only

Posted: 11 Jun 2008 12:13 PM CDT

Q. I've CentOS Linux server configured with APF firewall. How do I open port 22 from specific IP address only? I've fix static ADSL IP address assgined and I'd like to open port 22 from my IP 202.5.1.3 only using APF firewall script. How do I configure firewall? A. You need to edit two files: a) /etc/apf/conf.apf [...]

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