• Not using IPv6? Are you sure?

    Internet Protocol version 6 (IPv6) has been around for many years and was first supported in Red Hat Enterprise Linux 6 in 2010.  Designed to provide, among other things, additional address space on the ever-growing Internet, IPv6 has only recently become a priority for ISPs and businesses. On February 3, 2011, ICANN announced that the available pool of unallocated IPv4 addresses had been completely emptied and urged network operators and server owners to implement IPv6 if they had not already...
    Posted 2015-03-25T13:30:48+00:00 - 0
  • CWE Vulnerability Assessment Report 2014

    Last year is almost three months over and we have been busy completing the CWE statistics of our vulnerabilities. The biggest change from the year before is the scale of the data - CWE report for 2013 was based on 37 classified vulnerabilities, whereas last year we classified 617 vulnerabilities in our bugzilla. Out of them 61 were closed with resolution NOTABUG, which means they were either not a security issues, or did not affect Red Hat products. These still include vulnerabilities which...
    Posted 2015-03-18T14:30:23+00:00 - 0
  • Linter for Dockerfile

    We're pleased to introduce a new Red Hat Access Labs application called Linter for Dockerfile. The Docker project provides the means of packaging applications in lightweight containers and has quickly become one of the premier projects for containerization. Docker containers offer several advantages over traditional virtual machines such as smaller disk space, less memory, and and increased performance. The Linter for Dockerfile lab application allows you to check basic dockerfile syntax and...
    Posted 2015-03-12T17:35:37+00:00 - 2
  • CWE update

    In the past Red Hat Product Security assigned weakness IDs only to vulnerabilities that meet certain criteria, more precisely, only vulnerabilities with CVSS score higher than 7. Since the number of incoming vulnerabilities was high, this filtering allowed us to focus on vulnerabilities that matter most. However, it also makes statistics incomplete, missing low and moderate vulnerabilities. In the previous year we started assigning weakness IDs to almost all vulnerabilities, greatly increasing...
    Posted 2015-03-11T14:30:24+00:00 - 0
  • RHEV Manager History Database Size Calculator

    We're proud to introduce a new Red Hat Access Labs app: RHEV Manager History Database Size Calculator. The RHEV Manager History Database Size Calculator helps you estimate how much space and resources will be used by the Red Hat Enterprise Virtualization 3.5 manager history database. The estimate is based on the number of entities and the length of time needed to retain the history records. The following parameters are used to make the estimate: Number of individual entities, including: Data...
    Posted 2015-03-03T04:08:13+00:00 - 0
  • Post Over at community.redhat.com

    Check out our week at FOSDEM and Config Management Camp at community.redhat.com
    Posted 2015-02-04T20:35:21+00:00 - 3
  • Security improvements in Red Hat Enterprise Linux 7

    Each new release of Red Hat® Enterprise Linux® is not only built on top of the previous version, but a large number of its components incorporate development from the Fedora distribution. For Red Hat Enterprise Linux 7, most components are aligned with Fedora 19, and with select components coming from Fedora 20. This means that users benefit from new development in Fedora, such as firewalld which is described below. While preparing the next release of Red Hat Enterprise Linux, we review...
    Posted 2015-01-28T14:30:34+00:00 - 0
  • Reactive Product Security at Red Hat

    The goal of Product Security at Red Hat is “to help protect customers from meaningful security concerns when using Red Hat products and services.” What does that really mean and how do we go about it? In this blog, we take a look at how Red Hat handles security vulnerabilities and what we do to reduce risk to our customers. In 2001, we founded a dedicated security team within Red Hat to handle product security. Back then, we really had just one product line, the Red Hat® Linux® distribution....
    Posted 2015-01-21T14:30:25+00:00 - 0
  • Deploying Red Hat Enterprise Linux Atomic Host with Red Hat Satellite 6

    With the ever changing landscape in IT, many enterprise environments are looking for ways to reduce or eliminate downtime, improve security, reduce footprint, and achieve application portability. Red Hat Enterprise Linux Atomic Host provides a way to achieve these goals. In this blog we cover the steps needed to setup Satellite 6 to deploy RHEL Atomic Hosts within your environment. The Environment The lab environment consists of a single Satellite 6 server running an integrated capsule...
    Posted 2015-01-13T14:06:06+00:00 - 17
  • Update on Red Hat Enterprise Linux 6 and FIPS 140 validations

    Red Hat achieved its latest successful FIPS 140 validation back in April 2013. Since then, a lot has happened. There have been well publicized attacks on cryptographic protocols, weaknesses in implementations, and changing government requirements. With all of these issues in play, we want to explain what we are doing about it. One of the big changes was that we enabled support of Elliptic Curve Cryptography (ECC) and Elliptic Curve Diffie Hellman (ECDH) in Red Hat Enterprise Linux to meet the...
    Posted 2015-01-12T14:30:06+00:00 - 0
  • Red Hat launches Red Hat Satellite 5.7

    We are proud to announce the availability of Red Hat Satellite 5.7, the last upgrade to Red Hat Satellite 5. Red Hat Satellite improves Red Hat Enterprise Linux environment management by increasing automation, and adding discipline, simplified administrative workflows and processes. With Red Hat Satellite, you can manage tens, hundreds, or even thousands of servers as easily as one. Red Hat Satellite 5.7 is the latest of the Red Hat Satellite 5 series and features several highlights, including...
    Posted 2015-01-09T20:19:50+00:00 - 0
  • Container Security: Isolation Heaven or Dependency Hell

    Docker is the public face of Linux containers and two of Linux's unsung heroes: control groups (cgroups) and namespaces. Like virtualization, containers are appealing because they help solve two of the oldest problems to plague developers: "dependency hell" and "environmental hell." Closely related, dependency and environmental hell can best be thought of as the chief cause of "works for me" situations. Dependency hell simply describes the complexity inherent in modern application's tangled...
    Posted 2014-12-17T14:30:37+00:00 - 0
  • Red Hat Satellite 6 Performance Tuning: OS and Web Performance

    Satellite 6 is the next generation Linux systems management tool and is the combined product of many open source projects, including Foreman, Katello, Pulp, Candlepin, and Puppet. Since all of these projects bring different features and functionality, the performance of your Satellite 6 server is essential. This post covers two simple ways to immediately improve performance for the Satellite 6 Server: - Changing your OS tuned profile - Adding an Apache KeepAlive directive to the web...
    Posted 2014-12-10T21:37:28+00:00 - 8
  • Analysis of the CVE-2013-6435 Flaw in RPM

    The RPM Package Manager (RPM) is a powerful command-line driven package management system capable of installing, uninstalling, verifying, querying, and updating software packages. RPM was originally written in 1997 by Erik Troan and Marc Ewing. Since then RPM has been successfully used in all versions of Red Hat Linux and currently in Red Hat Enterprise Linux. RPM offers considerable advantages over traditional open-source software install methodology of building from source via tar balls,...
    Posted 2014-12-10T14:30:50+00:00 - 0
  • Disabling SSLv3 on the client and server

    Recently, some Internet search engines announced that they would prefer websites secured with encryption over those that were not.  Of course there are other reasons why securing your website with encryption is beneficial.  Protecting authentication credentials, mitigating the use of cookies as a means of tracking and allowing access, providing privacy of your users, and authenticating your own server thus protecting the information you are trying to convey to your users.  And while setting up...
    Posted 2014-12-03T14:30:23+00:00 - 0
  • VNC Configurator

    We're proud to introduce a new Red Hat Access Labs app: VNC Configurator Virtual Network Computing (VNC) is a common technology allowing remote desktop control for Red Hat Enterprise Linux systems. Although fully supported on all modern RHEL versions, it does not come installed by default. In order to use it, there are several steps involved with installation and configuration. This app helps guide you through the deployment process by asking a few questions, which will provide a script for...
    Posted 2014-12-01T09:18:26+00:00 - 3
  • Registration Assistant

    We're proud to introduce a new Red Hat Access Labs app: Registration Assistant. The Registration Assistant will guide you towards the best registration option for your Red Hat Enterprise Linux environment. Simply select the Red Hat Enterprise Linux Version and the subscription management technology you are using and the app will provide the appropriate commands to register your system. Some screenshots of the app are included below. Feel free to experiment with the app and let us know what...
    Posted 2014-11-12T21:12:57+00:00 - 0
  • Enterprise Linux 6.5 to 6.6 risk report

    Red Hat Enterprise Linux 6.6 was released the 14th of October, 2014, eleven months since the release of 6.5 in November 2013. So lets use this opportunity to take a quick look back over the vulnerabilities and security updates made in that time, specifically for Red Hat Enterprise Linux 6 Server. Red Hat Enterprise Linux 6 is in its fourth year since release, and will receive security updates until November 30th 2020. Errata count The chart below illustrates the total number of security updates...
    Posted 2014-11-12T14:30:28+00:00 - 0
  • Can SSL 3.0 be fixed? An analysis of the POODLE attack.

    SSL and TLS are cryptographic protocols which allow users to securely communicate over the Internet. Their development history is no different from other standards on the Internet. Security flaws were found with older versions and other improvements were required as technology progressed (for example elliptic curve cryptography or ECC), which led to the creation of newer versions of the protocol. It is easier to write newer standards, and maybe even implement them in code, than to adapt...
    Posted 2014-10-20T14:27:34+00:00 - 0
  • The Source of Vulnerabilities, How Red Hat finds out about vulnerabilities.

    Red Hat Product Security track lots of data about every vulnerability affecting every Red Hat product. We make all this data available on our Measurement page and from time to time write various blog posts and reports about interesting metrics or trends. One metric we've not written about since 2009 is the source of the vulnerabilities we fix. We want to answer the question of how did Red Hat Product Security first hear about each vulnerability? Every vulnerability that affects a Red Hat...
    Posted 2014-10-08T13:30:48+00:00 - 0
  • Satellite 6.0 Discovery Plugin

    Satellite 6.0 features automatic bare-metal discovery which is implemented as a PXE-boot live image with minimized Red Hat Enterprise Linux that is running from memory. Once Satellite 6.0 is configured to boot the discovery image for all unknown hosts, new nodes calls home during the start and wait until they are provisioned. Installation and Setup Before we start setting up the plugin and the image, verify the following prerequisites are met: Satellite 6.0.5 with bare-metal provisioning setup...
    Posted 2014-10-02T14:15:13+00:00 - 9
  • Kickstart Configuration Tool

    We're proud to introduce a new Red Hat Access Labs app: Kickstart Configuration Tool. Kickstart provides a way for users to automate a Red Hat Enterprise Linux installation. Using kickstart, a system administrator can create a single file containing the answers to all the questions that would normally be asked during a typical installation. Once a kickstart file has been generated it can either be included with boot media or made available on the network for easy and consistent configuration of...
    Posted 2014-09-18T14:22:39+00:00 - 1
  • Enterprise Linux 5.10 to 5.11 risk report

    Red Hat Enterprise Linux 5.11 was released this month (September 2014), eleven months since the release of 5.10 in October 2013. So, as usual, let's use this opportunity to take a look back over the vulnerabilities and security updates made in that time, specifically for Red Hat Enterprise Linux 5 Server. Red Hat Enterprise Linux 5 is in Production 3 phase, being over seven years since general availability in March 2007, and will receive security updates until March 31st 2017. Errata count The...
    Posted 2014-09-18T13:30:49+00:00 - 0
  • TLS landscape

    Transport Layer Security (TLS) or, as it was known in the beginnings of the Internet, Secure Sockets Layer (SSL) is the technology responsible for securing communications between different devices. It is used everyday by nearly everyone using the globe-spanning network. Let's take a closer look at how TLS is used by servers that underpin the World Wide Web and how the promise of security is actually executed. Adoption Hyper Text Transfer Protocol (HTTP) in versions 1.1 and older make encryption...
    Posted 2014-09-10T13:30:54+00:00 - 0
  • Satellite 6 is Here… We Hope You Enjoy It

    The Satellite Team is proud to announce the release of Satellite 6.0. This release is the culmination of several years of collaboration between some incredibly active open source communities, many savvy and technically strong customers, and a very passionate Red Hat engineering team. We have worked together upstream, and downstream through two Managed Design Programs, and two beta cycles. First and foremost, thank you for your efforts and the feedback which have helped us to deliver this next...
    Posted 2014-09-08T13:27:14+00:00 - 34

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