Security Alert

A few days ago I noticed that NFS performance between a web server node and NFS server went down by 50%. NFS was optimized and the only thing was updated Red Hat kernel v5.2. I also noticed same trend on CentOS 5.2 64 bit edition.

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Postfix MTA updated to fix security vulnerabilities such as incorrectly checks the ownership of a mailbox. In some configurations, this allows for appending data to arbitrary files as root. This update has been rated as having moderate security impact.

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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.

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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.

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Canonical Ltd has issued updates for its Kernel package to plug multiple security holes. A security issue affects all Ubuntu Linux versions.

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Debian Linux project released today bug fixes for lighttpd and gaim package that allows remote attacks and DoS attacks.

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Updated kernel packages that fix several bugs, while adding an enhancement are now available for Red Hat Enterprise Linux 4.

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