Securing your Linux server is important to protect your data, intellectual property, and time, from the hands of crackers (hackers). The system administrator is responsible for security Linux box. In this first part of a Linux server security series, I will provide 20 hardening tips for default installation of Linux system.
Red Hat has shipped a new version of its dnsmasq caching software to plug source UDP port bug. This could have made DNS spoofing attacks (CVE-2008-1447) easier. Dnsmasq is lightweight ultra fast dns cache server forwarder and DHCP server. It is designed to provide DNS and, optionally, DHCP, to a small network.
Firefox 3.0.1 has been released and available for download. This update has been rated as having critical security impact by the Mozilla. Use the following instructions to upgrade Firefox.
An updated firefox package that fixes several security issues is now available for various Linux distributions. All Mozilla Firefox users should upgrade to this updated package as update has been rated as having critical security impact.
Multiple buffer overflows were discovered in the Ubuntu Linux kernel and can be corrected by upgrading your system to latest kernel version.
Luciano Bello discovered that the random number generator in Debian’s openssl package is predictable. This is caused by an incorrect Debian-specific change to the openssl package (CVE-2008-0166). As a result, cryptographic key material may be guessable.