The Xen Project has fixed three vulnerabilities in its widely used hypervisor that could allow operating systems running inside virtual machines to access the memory of the host systems, breaking the critical security layer among them.Two of the patched vulnerabilities can only be exploited under certain conditions, which limits their use in potential attacks, but one is a highly reliable flaw that poses a serious threat to multitenant data centers where the customers' virtualized servers share the same underlying hardware.The flaws don't yet have CVE tracking numbers, but are covered in three Xen security advisories called XSA-213, XSA-214 and XSA-215."XSA-213 is a fatal, reliably exploitable bug in Xen," said the security team of Qubes OS, an operating system that isolates applications inside Xen virtual machines. "In the nearly eight-year history of the Qubes OS project, we have become aware of four bugs of this calibre: XSA-148, XSA-182, XSA-212 and now XSA-213."Of these four … [Read more...] about Xen hypervisor faces third highly critical VM escape bug in 10 months
Hypervisor for windows 10
Microsoft today released a new Windows 10 preview for PCs with font, privacy, Timeline, shell, settings, Hyper-V, and access improvements. This build is part of the RS4 branch, which represents the next Windows 10 update the company has yet to announce (but we already know a little about). Windows 10 is a service, meaning it was built in a very different way from its predecessors so it can be regularly updated with not just fixes, but new features, too. Microsoft has released four major updates so far: November Update, Anniversary Update, Creators Update, and Fall Creators Update. First up, the Fonts control panel has been refreshed to include previews of each font family, strings to match the primary languages the font is designed for, and the option to enter your own string. The Microsoft Store is also getting fonts as a new content type (installation requires build 17040 or higher). Microsoft is also introducing new privacy features (available under Settings > Privacy > … [Read more...] about Microsoft releases new Windows 10 preview with font, privacy, Timeline, shell, and settings improvements
It was way back in December 2016 when Microsoft announced its plans for Windows 10 on ARM devices. A year later, Asus, HP, and Lenovo unveiled the first of these laptops, and while they may boast an “all-day” battery life, a recent document published by Microsoft has revealed some of the platform’s limitations. First spotted by Paul Thurrott, it appears that the Redmond firm posted the "Limitations of apps and experiences on ARM" document by accident, seeing as it was removed over the weekend. But if you didn’t catch it first time around, there are cached copies available. We already knew that Windows 10 on ARM does not support emulation of x64 (64-bit) apps and can only run 32-bit desktop applications. The document reiterates this but Microsoft is planning to introduce support at some point in the future. It also says that while it can run x86 apps, it can’t use x86 drivers—it will require native ARM64 drivers instead. This means limited hardware … [Read more...] about Microsoft removes document showing limitations of Windows 10 on ARM
Microsoft launched ARM-powered Windows 10 PCs with “all-day” battery life back in December. While HP, Asus, and Lenovo’s devices aren’t on sale just yet, we’re still waiting to hear more about the limitations of Windows 10 running on these new PCs. Microsoft published a full list of limitations last week, spotted first by Thurrott, that details what to expect from Windows 10 on ARM. This list must have been published by accident, as the software giant removed it over the weekend so only cached copies of the information are available. Only ARM64 drivers are supported. Windows 10 on ARM can run x86 apps, but it can’t use x86 drivers. That shouldn’t be a problem for most hardware, but if you have some older peripherals then it’s likely that driver support won’t be available. Windows 10 on ARM driver support will be more limited, and similar to what Windows 10 S provides. x64 apps are not supported. This is something we’ve … [Read more...] about Microsoft accidentally reveals Windows 10 on ARM limitations
Hypervisors are showing up in more places than ever before as a quick and inexpensive way to utilize multiple cores and multiple chips more effectively and more securely.This marks an interesting twist for a technology that originally was developed as a way of enabling virtualization on a PC, allowing users to run multiple incompatible applications on the same computer. That was followed in the early part of the millennium by the rapid adoption of hypervisors in data centers as a way of increasing server utilization, allowing multiple applications to run on the same machine as a way of reducing energy bills for powering and cooling those servers.The latest incarnation of this technology is to more effectively utilize multiple cores on a chip, or across multiple chips in a much larger, connected system such as a car. Despite numerous reports over the years about the enduring value of this technology, it remains the fastest and cheapest solution, and the first choice for many design … [Read more...] about More Uses For Hypervisors
Another day, another car hacked and another report of a data breach. The lack of security built into electronic systems has made them a playground for the criminal world, and the industry must start becoming more responsive by adding increasingly sophisticated layers of protection. In this, the first of a two-part series, Semiconductor Engineering examines how hypervisors are entering the embedded world.Simon Davidmann, CEO of Imperas, frames the reason for consideration of hypervisors based on changes in hardware design. “In the past, if I wanted to have separate tasks running, I would probably design it so that I would have one on the left, one on the right, each running on different processor subsystems and the two would never touch. I would pipeline data from one to the other. They were inherently separated except for the information that they shared. The move to modern hardware, where you have multi-core processors or a farm of machines, means that everything is connected. … [Read more...] about Will Hypervisors Protect Us?
Microsoft on Wednesday unwrapped a major open source coup forCanonical when it announced that Ubuntu Linux will be able to run on Windows 10.Kevin Gallo, Microsoft's director of Windows developer platform, announced the development during a keynote address at Microsoft's Build 2016 conference in San Francisco.The Linux Bash command-line tool will run natively within Windows 10. That has been possible using third-party tools for years, but a direct partnership with Canonical should offer developers more flexibility and convenience using Ubuntu binaries and tools directly, he said.The feature does not involve running Ubuntu in a virtual machine or using cross-compiled tools. Windows 10 users can download the binaries from the Windows Store, Gallo added.Work on the project began several months ago and is a continuation of an ongoing business partnership between Microsoft and Canonical, said Dustin Kirkland, Canonical's Ubuntu product and strategy team lead."Microsoft and Canonical have … [Read more...] about Ubuntu Goes to Microsoft’s Windows 10 Bash
Such trends as cloud computing, service oriented architecture (SOA), social media, Software as a Service (SaaS), and virtualization are combining and overlapping to upset the client landscape. If more of what more users are doing with their clients involves services, then shouldn't the client be more services ready? Should we expect one client to do it all very well, or do we need to think more about specialized clients that might be configured on the fly?Today's clients are more tied to the past than the future, where one size fits all. Most clients consist of a handful of entrenched PC platforms, a handful of established Web browsers, and a handful of PC-like smartphones. But what has become popular on the server, virtualization, is taken to its full potential on these edge devices. New types of dynamic and task-specific client types might emerge. We'll take a look at what they might look like.Also, just as Windows 7 for Microsoft is quickly entering the global PC market, cloud … [Read more...] about PODCAST Time for Some Client-Side Disruption
Novell is touting its inclusion of Xen server virtualization software in its new Suse Linux Enterprise 10, calling the open source virtualization technology from XenSource one of the most important features of its latest Linux platform.Novell, which also released updated enterprise desktop and server software as part of its Suse Linux Enterprise 10 rollout, said it would show off the platform's capabilities at the upcoming August LinuxWorld conference in San Francisco. IBM also bolstered the Xen move by announcing hardware and middleware support for Suse Linux Enterprise 10 and Xen.Novell claimed significant demand for Xen virtualization from customers, but some industry observers questioned whether Xen was ready for inclusion in a Suse Enterprise Linux release, as such rollouts are known for providing tested, verified, enterprise-ready software."The thing with Xen is, it's certainly going to be important technology for Linux users, but one of the things I do think, frankly, is … [Read more...] about Novell Touts Xen Virtualization in Suse Enterprise 10
Microsoft Windows is collapsing under its own weight and must radically change for the sake of users, independent software vendors and Microsoft itself, according to research firm Gartner.Because Microsoft Windows is so large and complex, covering 20 years of legacy code, it can no longer adequately respond to market forces, and Windows needs to be securely redesigned, said Gartner analysts Michael Silver and Neil MacDonald. They delivered the news at the Gartner Symposium/ITxpo 2008 in Las Vegas this week."It takes Microsoft too long to introduce new versions of Windows, and once a new version is released, it takes significant time for the ecosystem to support it and for the release to stabilize," the pair reported. "Organizations need to wait for that support and stability and then deal with the enormous task of deployment and management for increasingly nebulous benefits. For Microsoft, its ecosystem and its customers, the situation is untenable.""In the development of Longhorn … [Read more...] about Is Windows Getting Morbidly Obese?