LCNA14: Security in the Cloud: Containers, KVM, and Xen - George Dunlap, Citrix Systems UK Ltd
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In our interconnected world of mobile and cloud computing, particularly with the rise of governmental spying, corporate espionage, and theft of data by organized crime syndicates, security is more important than ever. Many claims are being made about the security of open-source cloud technologies: How can administrators, users, and developers separate fact from fiction? This talk will equip the audience with the principles needed to evaluate security claims. We will talk the nature of risk, of vulnerabilities and exploits; the various factors that reduce the risk of vulnerabilities in software; and about TCB, threat models, and defense-in-depth. We will then apply these principles to three open-source cloud technologies: containers, KVM, and Xen, to see how they stack up. These will be backed up with numbers: lines of code, security advisories, entry points, and so on.
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Paul Durant, leader of the Windows PV Drivers effort in Xen Project, discusses the history, architecture, interfaces, and use of the drivers. Using the Windows PV Drivers yield higher performance for Windows VMs.
Drive into kvm
This document provides an overview of virtualization using KVM and oVirt. It discusses the architecture of KVM and Xen, how Qemu works with KVM, and the Libvirt architecture. It also covers installing KVM on CentOS, checking for hardware virtualization support, and installing required packages. Finally, it briefly introduces oVirt and provides some reference documentation links.
CIF16: Building the Superfluid Cloud with Unikernels (Simon Kuenzer, NEC Europe)
CIF16: Building the Superfluid Cloud with Unikernels (Simon Kuenzer, NEC Europe)The Linux Foundation
The confluence of a number of relatively recent trends including the development of virtualization technologies, the deployment of micro datacenters at PoPs, and the availability of microservers, opens up the possibility of evolving the cloud, and the network it is connected to, towards a superfluid cloud: a model where parties other than infrastructure owners can quickly deploy and migrate virtualized services throughout the network (in the core, at aggregation points and at the edge), enabling a number of novel use cases including virtualized CPEs and on-the-fly services, among others. Towards this goal, we identify a number of required mechanisms and present early evaluation results of their implementation.
On an inexpensive commodity server, we are able to concurrently run up to 10,000 specialized virtual machines (based on unikernels), instantiate a VM in as little as 10 milliseconds, and migrate it in under 100 milliseconds.XPDDS19: Argo and Hypervisor-Mediated Data eXchange (HMX) - Christopher Clark...
XPDDS19: Argo and Hypervisor-Mediated Data eXchange (HMX) - Christopher Clark...The Linux Foundation
Defending the security of interconnected systems is shifting to depend upon methods for determining the level of trust to be placed in devices and users, with mandatory enforcement of access control policies and robust mechanisms for ensuring the integrity of communication between mutually-authenticated entities.
Virtualization-based security leverages trust in the hypervisor to provide strong mechanisms to virtual machines, enabling increased protection, in server, client and embedded deployments.
The interfaces provided by the hypervisor for inter-domain communication determine critical properties for data isolation and control of information flow.
Hypervisor-Mediated data eXchange describes key aspects of these data transfer primitives and has some support in Hyper-V. The first Open Source implementation of HMX is Argo, a Xen hypervisor feature developed with the OpenXT Project.Rootlinux17: An introduction to Xen Project Virtualisation
This talk provides an overview of the Xen Project eco-system and its main use-cases in a number of important market segments: it covers server virtualization, cloud computing and embedded, automotive and related. Lars Kurth highlights why the Xen Project is relevant in these market segments: he provides an overview of the Xen Project's architecture, relevant existing functionality and ongoing and planned developments. To complement the picture, he covers open-source projects that are related to Xen and are of interest for these use-cases. Excellent Software security is key to all of these use-cases. Thus, Lars specifically covers the Xen Project's security features, track record and touches on the project's security practices. He concludes with a few resources that help you get started with the Xen Project and highlight Internship Programs which the project supports.
The talk was delivered at Root Linux Conference 2017. Learn more: http://linux.globallogic.com/materials. The video is available at https://www.youtube.com/watch?v=sjQnAIJji4k
KVM tools and enterprise usage
Vincent Van der Kussen discusses KVM and related virtualization tools. KVM is a kernel module that allows Linux to function as a hypervisor. It supports x86, PowerPC and s390 architectures. Key tools discussed include libvirt (the virtualization API), virsh (command line tool for libvirt), Qemu (runs virtual machines), and virt-tools like virt-install. The document provides an overview of using these tools to manage virtual machines and storage.
LFNW2014 Advanced Security Features of Xen Project Hypervisor
As delivered by Russell Pavlicek at Linuxfest Northwest 2014. Some of the key security features which can be enabled when using the Xen Project Hypervisor.
Xen and the art of embedded virtualization (ELC 2017)
Hypervisors are becoming more and more widespread in embedded environments, from automotive to medical and avionics. Their use case is different from traditional server and desktop virtualization, and so are their requirements. This talk will explain why hypervisors are used in embedded, and the unique challenges posed by these environments to virtualization technologies.
Xen, a popular open source hypervisor, was born to virtualize x86 Linux systems for the data center. It is now the leading open source hypervisor for ARM embedded platforms. The presentation will show how the ARM port of Xen differs from its x86 counterpart. It will go through the fundamental design decisions that made Xen a good choice for ARM embedded virtualization. The talk will explain the implementation of key features such as device assignment and interrupt virtualization.
Virtualization - Kernel Virtual Machine (KVM)
KVM is a virtualization solution that leverages hardware virtualization extensions like Intel VT or AMD-V for full virtualization. It uses kernel modules, QEMU, and libvirt to manage virtual machines. KVM is widely used in Linux distributions and offers benefits like isolation, emulation, and easy migration. It allows hosting multiple virtual machines with their images stored on a shared LVM storage that is connected via iSCSI. Management tools like virsh and virt-manager can be used to control the virtual machines from the command line or GUI.
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XPDS16: The OpenXT Project in 2016 - Christopher Clark, BAE Systems
XPDS16: The OpenXT Project in 2016 - Christopher Clark, BAE Systems
Mastering kvm virtualization- A complete guide of KVM virtualization
Mastering kvm virtualization- A complete guide of KVM virtualization
ELC21: VM-to-VM Communication Mechanisms for Embedded
ELC21: VM-to-VM Communication Mechanisms for Embedded
Virtualization with KVM (Kernel-based Virtual Machine)
Virtualization with KVM (Kernel-based Virtual Machine)
XPDS16: Hypervisor Enforced Data Loss Prevention - Neil Sikka, A1LOGIC
XPDS16: Hypervisor Enforced Data Loss Prevention - Neil Sikka, A1LOGIC
Xen on ARM for embedded and IoT: from secure containers to dom0less systems
Xen on ARM for embedded and IoT: from secure containers to dom0less systems
CIF16: Building the Superfluid Cloud with Unikernels (Simon Kuenzer, NEC Europe)
CIF16: Building the Superfluid Cloud with Unikernels (Simon Kuenzer, NEC Europe)
XPDDS19: Argo and Hypervisor-Mediated Data eXchange (HMX) - Christopher Clark...
XPDDS19: Argo and Hypervisor-Mediated Data eXchange (HMX) - Christopher Clark...
Rootlinux17: An introduction to Xen Project Virtualisation
Rootlinux17: An introduction to Xen Project Virtualisation
LFNW2014 Advanced Security Features of Xen Project Hypervisor
LFNW2014 Advanced Security Features of Xen Project Hypervisor
Xen and the art of embedded virtualization (ELC 2017)
Xen and the art of embedded virtualization (ELC 2017)
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This session will give a detailed report on the functionality found in newer kernel versions as it relates to Linux on System z. Areas included are advanced virtualization, storage support, RAS, security, as well as usability and serviceability. This session will also give some insight into the IBM Linux on System z development process itself.
Last, not least, attendees get an overview of features, functionalities and tools specific to SUSE Linux Enterprise Server for System z.
XPDS13: SecureServe - A Multi-level Secure Server Virtualization Platform on ...
XPDS13: SecureServe - A Multi-level Secure Server Virtualization Platform on ...The Linux Foundation
Due to the rapid shift toward cloud computing, virtual desktop infrastructure (VDI) and thin client computing, many organizations in the government desire a high assurance, multi-level secure server virtualization platform that is low-cost, open and enterprise ready. In this presentation, Jason Sonnek will present SecureServe, a recently launched effort to develop such a platform by building on the open-source Citrix XenServer. The SecureServe project will draw upon research in a number of areas, including dom0 disaggregation, Xen Security Modules mandatory access controls and static/dynamic attestation. In this presentation, Jason will describe the project objectives and requirements, the project's relation to Citrix XenClient XT and XenServer Windsor, current development status and plans for moving forward.Disk Performance Comparison Xen v.s. KVM
This document compares the disk I/O performance of Xen and KVM virtualization platforms using two types of storage - HDD and SSD. Benchmarking was performed on virtual machines using different I/O sizes and read/write patterns. With HDD storage, Xen generally showed the best performance, while with SSD storage, all VMs exhibited significant delays for small I/Os due to CPU overhead from virtualization. KVM performance was impacted by disk cache settings.
Systemz Security Overview (for non-Mainframe folks)
The document provides an overview of mainframe security for non-mainframe personnel. It discusses IBM System z and how it fulfills its security strategy through three main approaches: 1) enhancing its own host protection through continuous advancements in security capabilities, 2) protecting host interfaces and boundaries to secure identities and data passing across borders, and 3) extending its high quality of service in security into the enterprise through technologies like encryption and identity management. The document highlights several core security features of System z including resource profiles, user profiles, RACF, and how z/OS TCP/IP provides security through features like SAF protection, intrusion detection services, IP filtering, and IPSec.
linux security: interact with linux
The document discusses securing Linux systems by securing the physical environment and bootloader. It recommends securing the room where the Linux computer is located, locking down the CPU case and BIOS to prevent booting from removable media. It also suggests disabling the Ctrl+Alt+Delete reboot shortcut and password protecting the GRUB bootloader to prevent unauthorized access and bootloader hacking attempts. Physical security of the room and computer case, along with logical security of the boot process are key focuses of the document.
Linux Security
This document provides an overview of Linux security and auditing. It discusses the history and architecture of Linux, important security concepts like physical security, operating system security, network security, file system security and user/group security. It also describes various Linux security tools that can be used for tasks like vulnerability scanning, auditing, intrusion detection and password cracking.
File System Implementation & Linux Security
This document discusses file system implementation and Linux security. It begins by describing how file systems are typically stored on disks with partitions and sectors. It then explains how files are created, opened, read, written to, and deleted in a file system. Two common allocation methods are also summarized - contiguous allocation and linked allocation. Finally, it outlines some common security threats like intruders, malicious programs, and generic attacks and how TCP wrappers can be used to filter network access on Linux servers.
Kernel Recipes 2013 - Linux Security Modules: different formal concepts
This conference proposes to browse the differences between the models that make up the security modules of Linux kernels.
An introduction to implementation will be presented in order to understand how to develop a security module.
2009-08-11 IBM Teach the Teachers (IBM T3), Linux Security Overview
Co-presented with Matt Jamison (Sr Architect, DoD Programs) at the IBM Teach the Teacher (IBM T3) conference. Discussed SELinux, Policy Enforcement, Discretionary Access Control, Multi-Level Security vs Multi-Category Security, Role-Based Access Control, usage of SELinux, Linux Audit Subsystem, and host hardening procedures.
Scsi express overview
SCSI Express is the robust and proven SCSI protocol combined with PCIe that creates an industry-standard path to PCIe-based storage. SCSI Express combined with SAS-based solutions provides unprecedented performance and low latency that enterprises demand.
Linux Security, from Concept to Tooling
Linux is considered to be a secure operating system by default. Still there is a lot to learn about system hardening and technical auditing. This 1-hour presentation explains the need for hardening and auditing of your systems. We discussed some additional documents and tools, to further help this endeavor.
This presentation is suitable for both beginners and those with experience in system hardening.
µ-Xen
This talk with discuss the design and implementation of a new type of hypervisor derived from the Xen code base. µ-Xen has been built and optimized for modern CPUs and chipsets, and thus assumes the presence of CPU and IO MMUs that are virtualization capable. µ-Xen borrows extensively from the production-proven and tuned Xen code base, but removal of support for older hardware and PV-MMU guests has enabled significant simplification of the code. µ-Xen supports optimizations in support of running large numbers of very similar virtual machines, through the support of a native 'vmfork' optimization and efficient re-merging of shareable pages.
The primary goal of µ-Xen has been to run as a late-load hypervisor on an existing OS. It has a narrow and well-defined interface to the services it expects from the underlying OS, which makes it easy to port to other OSes, or to enable it to run on bare metal. During initialisation, µ-Xen can de-privilege the running host OS into a VM container, enabling it to establish itself as the most privileged software component in the system. Thus, µ-Xen enforces the privacy and integrity of itself and VMs that it is running, against a faulty or malicious host OS, while co-operating with the host OS on the actual allocation of physical resources.
XPDS16: A Paravirtualized Interface for Socket Syscalls - Dimitri Stiliadis, ...
XPDS16: A Paravirtualized Interface for Socket Syscalls - Dimitri Stiliadis, ...The Linux Foundation
Docker and other container runtimes are gathering momentum and becoming the new industry standard for server applications. Linux namespaces, commonly used to run Docker apps, come with a large surface of attack which is difficult to reduce. Intel’s Clear Containers use KVM to run containers as VMs to provide additional isolation. It is possible to provide VM-like isolation for containers without sacrificing performance.
This talk focuses on the benefits of using Xen to provide an execution environment for Docker apps. The presentation starts by listing the requirements of this environment. It explains why monitoring container syscalls is important and what its security benefits are. The talk introduces a new paravirtualized protocol to virtualize IP sockets and provides the design and implementation details. The presentation clarifies the impact of the new protocol from a security perspective. The discussion concludes by comparing performance figures with the traditional PV network frontend and backend drivers in Linux, explaining the reasons for any performance gaps. LF Collaboration Summit: Xen Project 4 4 Features and Futures
Xen Project 4.4 Release Information.
Delivered by Russell Pavlicek at Linux Foundation Collaborative Summit on March 27, 2014.
Updated for LinuxCon/CloudOpen North America in August 2014.
Linux ppt
The document provides an overview of Linux, including its history and features. It discusses how Linux originated from the GNU project and was started by Linus Torvalds. Linux is an open source operating system that can run on various platforms. It provides features like multi-user access, multitasking, and security benefits compared to other operating systems. The document also describes the typical Linux desktop environment and popular software applications available for Linux.
Security and Linux Security
The document summarizes a presentation on network security and Linux security. The presentation covered introduction to security, computer security, and network security. It discussed why security is needed, who is vulnerable, common security attacks like dictionary attacks, denial of service attacks, TCP attacks, and packet sniffing. It also covered Linux security topics like securing the Linux kernel, file and filesystem permissions, password security, and network security using firewalls, IPSEC, and intrusion detection systems. The presentation concluded with a reference to an ID-CERT cybercrime report and a call for questions.
Security, Hack1ng and Hardening on Linux - an Overview
A fairly detailed overview on current state of security and hardening countermeasures being employed on a modern OS like Linux. With a focus on teaching the basics of BOF (Buffer OverFlow), so that one understands how these attacks work.
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Kernel Recipes 2013 - Linux Security Modules: different formal concepts
Kernel Recipes 2013 - Linux Security Modules: different formal concepts
2009-08-11 IBM Teach the Teachers (IBM T3), Linux Security Overview
2009-08-11 IBM Teach the Teachers (IBM T3), Linux Security Overview
XPDS16: A Paravirtualized Interface for Socket Syscalls - Dimitri Stiliadis, ...
XPDS16: A Paravirtualized Interface for Socket Syscalls - Dimitri Stiliadis, ...
LF Collaboration Summit: Xen Project 4 4 Features and Futures
LF Collaboration Summit: Xen Project 4 4 Features and Futures
Security, Hack1ng and Hardening on Linux - an Overview
Security, Hack1ng and Hardening on Linux - an Overview
Similar to LCNA14: Security in the Cloud: Containers, KVM, and Xen - George Dunlap, Citrix Systems UK Ltd
Docker and kernel security
The document discusses the relative security of containers versus virtual machines. Several experts provide their views:
- Containers are weaker than VMs from a security perspective, according to one source. However, others argue containers can be just as secure as VMs if implemented properly.
- While VMs may be more secure currently, containers are catching up on security, according to a Docker engineer.
- One source argues that no software, including virtualization layers, will be perfectly secure since developers will always write code with security holes.
- For Google, security is the top priority for VMs since they provide stronger isolation than alternative options like containers or bare metal servers.
- Consumer Windows OS lacks
Making the case for sandbox v1.1 (SD Conference 2007)
This document summarizes Dinis Cruz's presentation on sandboxing technologies. It had two main sections. The first section argued that sandboxing environments are important for security but that Microsoft and Sun have not fully embraced the technology. The second section discussed how code access security can be used to mitigate the OWASP Top 10 vulnerabilities. It provided examples of existing sandboxing technologies and argued that sandboxing should be used more widely to separate code and data. The presentation proposed a business model where 99% of code runs in a tight sandbox and 1% can run with privileges after certification. It also discussed the importance of containment and least privilege for limiting the damage of malicious code.
LXC, Docker, security: is it safe to run applications in Linux Containers?
The document discusses the security of running applications in Linux containers. It begins by acknowledging that containers were not originally designed with security in mind. However, it then outlines several techniques that can be used to improve security, such as running containers without root privileges, dropping capabilities, enabling security modules like SELinux, and limiting access to devices and system calls. For the most security-sensitive tasks, it recommends running containers inside virtual machines to isolate them further. In the end, it argues that with the right precautions, containers can be used securely for many applications.
Docker, Linux Containers (LXC), and security
Linux containers provide isolation between applications using namespaces and cgroups. While containers appear similar to VMs, they do not fully isolate applications and some security risks remain. To improve container security, Docker recommends: 1) not running containers as root, 2) dropping capabilities like CAP_SYS_ADMIN, 3) enabling user namespaces, and 4) using security modules like SELinux. However, containers cannot fully isolate applications that need full hardware or kernel access, so virtual machines may be needed in some cases.
The Good The Bad The Virtual
In this presentation, I introduce VASTO, the Virtualization ASsessment TOolkit. VASTO is a collection of Metasploit module to specifically assess virtual infrastructure.
Docker, Linux Containers, and Security: Does It Add Up?
Containers are becoming increasingly popular. They have many advantages over virtual machines: they boot faster, have less performance overhead, and use less resources. However, those advantages also stem from the fact that containers share the kernel of their host, instead of abstracting an new independent environment. This sharing has significant security implications, as kernel exploits can now lead to host-wide escalations.
In this presentation, we will:
- Review the actual security risks, in particular for multi-tenant environments running arbitrary applications and code
- Discuss how to mitigate those risks
- Focus on containers as implemented by Docker and the libcontainer project, but the discussion also stands for plain containers as implemented by LXC
Docker en kernel security
Containers provide isolation at the operating system level through mechanisms like namespaces and cgroups. While containers isolate applications from each other better than traditional virtualization, some experts argue that full virtualization using hypervisors provides stronger security due to stronger isolation between virtual machines. However, container security has improved significantly over time and many argue containers can provide adequate security for many use cases. There is an ongoing debate in the industry around the relative security of containers versus virtual machines.
Pitfalls and limits of dynamic malware analysis
This document discusses the pitfalls and limits of dynamic malware analysis. It summarizes that dynamic analysis aims to observe malware execution but is challenging due to evasion techniques. Several problems are outlined, including the difficulty of scalability, isolation, and stealth when analyzing malware. The document also discusses issues with using debuggers, emulators, and hypervisor introspection for dynamic analysis. It notes that complete stealth is not feasible and that halting and evasion problems cannot be fully solved.
VirtSec, and the Open Source impact
1) The document discusses the concepts of virtualization, virtualization security (VirtSec), open source virtualization, and cloud security (CloudSec).
2) It notes that virtualization changes the network stack and security approaches by putting the network inside machines and allowing live migration across VLANs.
3) It argues that security must focus on automation, configuration management, and avoiding proprietary lock-in to address challenges from virtualization like image sprawl and rapid redeployment.
An overview of OpenVZ virtualization technology
OpenVZ is an OS-level virtualization technology that partitions a physical server into multiple isolated virtual environments called containers. It provides strong isolation between containers and allows them to independently run their own services and applications. OpenVZ offers benefits like high density, native performance, dynamic resource allocation and easier management compared to other virtualization methods. It has been widely adopted for server consolidation, hosting, development/testing and other use cases.
An overview of OpenVZ virtualization technology
OpenVZ is an OS-level virtualization technology that partitions a physical server into multiple isolated virtual environments called containers. It provides strong isolation between containers and allows them to independently run their own services and applications. OpenVZ offers benefits like high density, native performance, dynamic resource allocation and easier management compared to other virtualization methods. It has been widely adopted for server consolidation, hosting, development and testing, and other use cases.
[Confidence0902] The Glass Cage - Virtualization Security
The Glass Cage, the presentation I gave at Confidence 2009-02 about virtualization security, detailing various attack patterns to virtualization infrastructures.
Teensy Programming for Everyone
This was a workshop I conducted at Black Hat Europe'12. The workshop explains how to program a USB HID, Teensy++ in this case, for usage in offensive security.
From 🤦 to 🐿️
Slides from my DevOpsExpo London talk "From oops to NoOps".
They tell you in these conferences that DevOps is not about tools, but about culture. And they are partially right. I am going to tell you that it’s not only about culture or tools but also abstractions.
It is a lot about how you see software and its value. About our mental model of what software is: how it runs, evolves, and interacts with the other facets of an enterprise.
We used to view software as code. As a state of code. Now we think about software as change, as a flow. A dynamic system where people, machines, and processes interact continuously.
At Platform.sh we spend a bunch of time asking ourselves not “How do you build?” - or even “How do you build consistently?” - but rather “What does it mean to consistently build in a world where change is good?” A world that lets you push security fixes into production as soon as they’re available because you don’t want to be an Equifax but you do want stability.
In this presentation, I will go over what we think software is and why having the right ideas about software will help you get your culture right and your tooling aligned, as well as gain in productivity, and general happiness and well-being.
Qubes os presentation_to_clug_20150727
Qubes OS is an open source operating system that provides strong security for desktop computing using the principle of security by compartmentalization. It runs Fedora in a special administrative domain (dom0) and allows other template virtual machines like Debian and Arch Linux. Rather than providing process-level isolation like other operating systems, Qubes OS takes advantage of virtual machine isolation to compartmentalize different tasks and restrict what software can access. This allows it to address security issues with allowing applications to access keystrokes, screenshots, clipboard contents and devices on traditional desktop operating systems.
Dev and Blind - Attacking the weakest Link in IT Security
The developer is an easy and valuable target for malicious minds. The reasons for that are numerous and hard to come by. This talk delivers examples, proof, discussion and awkward moments in a pretty special way.
Everybody hates developers – especially web developers. And why not? The cracks and crevices of their APIs and implementations are the reason that vulnerabilities in web applications are still a widespread issue – and will continue to be in the foreseeable future.
Bashing and blaming them for their wrongdoings is fun – boy, they are stupid in their mistakes! But has anyone ever dared to have an open on stage battle with an actual developer?
And who of the developers dares to face their collective nemesis – the attacker? Can there be life where matter and anti-matter collide? We will know about this soon – because this is what this talk is going to be about. Developer versus attacker – vulnerability versus defense. Be prepared for swearing, violence and people leaving the stage prematurely in tears.
A Xen Case Study
The document discusses using virtualization with Xen in a real world environment. It describes how virtualization was used at Newtec to consolidate servers, test configurations, and build dynamic development environments. Some key benefits realized were reduced hardware costs through consolidation, the ability to test at large scale without dedicated hardware, and automating the deployment of virtual machines. It also discusses lessons learned around only virtualizing what is needed and ensuring simplicity to maximize availability.
The lies we tell our code, LinuxCon/CloudOpen 2015-08-18
As presented at LinuxCon/CloudOpen 2015: http://sched.co/3Y3v
We tell our code lies from development to deploy. The most common of these lies start with the simple act of launching a virtual machine. These lies are critical to our applications. Some of them protect applications from themselves and each other, some even improve performance. Some, however, decrease performance, and others create barriers to simply getting things done.
We lie about the systems, networks, storage, RAM, CPU and other resources our applications use, but how we tell those lies is critical to how the applications that depend on them perform. Joyent's Casey Bisson will explore the lies we tell our code and demonstrate examples of how they sometimes help and hurt us.
DevOps and the Death & Rebirth of Childhood Innocence
The document discusses the evolution of software development from a fun childhood activity to a complex enterprise process due to increased regulations and procedures. It argues this led to failures like the Equifax data breach. The solution proposed is adopting modern DevOps practices like continuous integration/delivery, immutable infrastructure, and automated testing to make deploying code simple and safe again. The talk advocates configuring applications to run securely in containers managed by Kubernetes for easy, isolated testing of all code branches.
The Lies We Tell Our Code (#seascale 2015 04-22)
This document discusses various lies and forms of virtualization that are commonly used in computing. It begins by summarizing different virtualization technologies used at Joyent like zones, SmartOS, and Triton. It then discusses lies told at different layers of the stack, from virtual memory to network virtualization. Some key lies discussed include hyperthreading, paravirtualization, hardware virtual machines, Docker containers, filesystem virtualization techniques, and network virtualization. The document argues that many of these lies are practical choices that improve performance and workload density despite not perfectly representing the underlying hardware. It concludes by acknowledging the need to be mindful of security issues but also not to stop lying at the edge of the compute node.
Similar to LCNA14: Security in the Cloud: Containers, KVM, and Xen - George Dunlap, Citrix Systems UK Ltd (20)
Making the case for sandbox v1.1 (SD Conference 2007)
Making the case for sandbox v1.1 (SD Conference 2007)
LXC, Docker, security: is it safe to run applications in Linux Containers?
LXC, Docker, security: is it safe to run applications in Linux Containers?
Docker, Linux Containers, and Security: Does It Add Up?
Docker, Linux Containers, and Security: Does It Add Up?
[Confidence0902] The Glass Cage - Virtualization Security
[Confidence0902] The Glass Cage - Virtualization Security
Dev and Blind - Attacking the weakest Link in IT Security
Dev and Blind - Attacking the weakest Link in IT Security
The lies we tell our code, LinuxCon/CloudOpen 2015-08-18
The lies we tell our code, LinuxCon/CloudOpen 2015-08-18
DevOps and the Death & Rebirth of Childhood Innocence
DevOps and the Death & Rebirth of Childhood Innocence
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ELC2019: Static Partitioning Made Simple
Static partitioning is used to split an embedded system into multiple domains, each of them having access only to a portion of the hardware on the SoC. It is key to enable mixed-criticality scenarios, where a critical application, often based on a small RTOS, runs alongside a larger non-critical app, typically based on Linux. The two domains cannot interfere with each other.
This talk will explain how to use Xen for static partitioning. It will introduce dom0-less, a new Xen feature written for the purpose. Dom0-less allows multiple VMs to start at boot time directly from the Xen hypervisor, decreasing boot times drastically. It makes it very easy to partition the system without virtualization overhead. Dom0 becomes unnecessary.
This presentation will go into details on how to setup a Xen dom0-less system. It will show configuration examples and explain device assignment. The talk will discuss its implications for latency-sensitive and safety-critical environments.
XPDDS19: How TrenchBoot is Enabling Measured Launch for Open-Source Platform ...
XPDDS19: How TrenchBoot is Enabling Measured Launch for Open-Source Platform ...The Linux Foundation
Daniel Smith discusses TrenchBoot, a project aiming to establish a unified approach to harnessing boot integrity technologies across open source platforms. TrenchBoot will enable establishing hardware-rooted integrity during platform boot (first launch inspection), runtime (runtime inspection), and other states. For runtime inspection, TrenchBoot will develop a way to securely re-establish the integrity of Xen at any time without rebooting by dynamically launching an integrity kernel to inspect and verify Xen. The talk outlines the initial and future work of TrenchBoot to integrate these capabilities with Linux, Xen and other open source projects.XPDDS19 Keynote: Xen in Automotive - Artem Mygaiev, Director, Technology Solu...
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Artem will briefly cover what has been done since the first talk on Xen in Automotive domain back in 2013, what is going on now and what is still missing for broad adaptation of Xen in vehicles. The following topics will be covered:
Embedded/automotive features of Xen
Collaboration with AGL and GENIVI organizations for standardization
Efforts on Functional Safety compliance
Artem will also go over typical automotive use scenarios for Xen which may not be the same as generic computing use of hypervisor.XPDDS19 Keynote: Xen Project Weather Report 2019 - Lars Kurth, Director of Op...
XPDDS19 Keynote: Xen Project Weather Report 2019 - Lars Kurth, Director of Op...The Linux Foundation
In this keynote talk, we will give an overview of the state of the Xen Project, trends that impact the project, see whether challenges that surfaced last year have been addressed and how we did it, and highlight new challenges and solutions for the coming year.XPDDS19 Keynote: Unikraft Weather Report
In recent years unikernels have shown immense performance potential (e.g., boot times of only a few ms, image sizes of only hundreds of KBs).The fundamental drawback of unikernels is that they require that applications be manually ported to the underlying minimalistic OS, needing both expert work and often considerable amount of time.
The Unikraft project provides a unikernel code base and build system that significantly simplifies the building of unikernels. In addition to support for a number CPU architectures, languages and frameworks, Unikraft provides debugging and tracing features that are generally sorely missing from unikernel projects. In this talk we will talk about these features, show a set of preliminary performance numbers, and provide a roadmap for the project's future.
XPDDS19 Keynote: Secret-free Hypervisor: Now and Future - Wei Liu, Software E...
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This talk will introduce Dom0-less: a new way of using Xen to build mixed-criticality solutions. Dom0-less is a Xen feature that adds a novel approach to static partitioning based on virtualization. It allows multiple domains to start at boot time directly from the Xen hypervisor, decreasing boot times dramatically. Xen userspace tools, such as xl and libvirt, become optional.
Dom0-less extends the existing device tree based Xen boot protocol to cover information required by additional domains. Binaries, such as kernels and ramdisks, are loaded by the bootloader (u-boot) and advertised to Xen via new device tree bindings.
The audience will learn how to use Dom0-less to partition the system. Uboot and device tree configuration details will be explained to enable the audience to get the most out of this feature. The talk will include a status update and details on future plans.
XPDDS19 Keynote: Patch Review for Non-maintainers - George Dunlap, Citrix Sys...
XPDDS19 Keynote: Patch Review for Non-maintainers - George Dunlap, Citrix Sys...The Linux Foundation
As the number of contributions grow, reviewer bandwidth becomes a bottleneck; and maintainers are always asking for more help. However, ultimately maintainers must at least Ack every patch that goes in; so if you're not a maintainer, how can you contribute? Why should anyone care about your opinion?
This talk will try to lay out some advice and guidelines for non-maintainers, for how they can do code review in a way which will effectively reduce the load on maintainers when they do come to review a patch.XPDDS19: Memories of a VM Funk - Mihai Donțu, Bitdefender
This talk is a follow-up to our Summit 2017 presentation in which we covered our plans for Intel VMFUNC and #VE, as well as related use-cases. This year, we will provide a report on what we have accomplished in Xen 4.12, and what remains to be addressed. We will also give a brief status update of VMI on AMD hardware. The session will end with some real-world numbers of the Hypervisor Introspection solution running on Citrix Hypervisor 8.0 with #VE enabled.
OSSJP/ALS19: The Road to Safety Certification: Overcoming Community Challeng...
Safety certification is one of the essential requirements for software to be used in highly regulated industries. Besides technical and compliance issues (such as ISO 26262 vs IEC 611508) transitioning an existing project to become more easily safety certifiable requires significant changes to development practices within an open source project.
In this session, we will lay out some challenges of making safety certification achievable in open source and the Xen Project. We will outline the process the Xen Project has followed thus far and highlight lessons learned along the way. The talk will primarily focus on necessary process, tooling changes and community challenges that can prevent progress. We will be offering an in-depth review of how Xen Project is approaching this challenging goal and try to derive lessons for other projects and contributors.
OSSJP/ALS19: The Road to Safety Certification: How the Xen Project is Making...
This document summarizes a discussion around enabling functional safety certification for the Xen open source hypervisor project. Key points discussed include:
- Establishing a split development model with open and closed parts to balance community needs and safety requirements.
- Developing reference implementations and stacks supported by multiple vendors to demonstrate safety certification feasibility.
- Creating plans and processes around requirements, documentation, verification testing, and tooling integration to begin filling gaps for certification.
- Addressing challenges around funding, resources, expertise, and maintaining contributions to ensure any initial work is sustainable long-term.
- Taking an iterative, agile approach to make early progress while further securing necessary funding and support from interested parties.
XPDDS19: Speculative Sidechannels and Mitigations - Andrew Cooper, Citrix
2018 saw fundamental shifts in security boundaries which were previously taken for granted. A lot of work has been done in the past 2 years, and largely in secret under embargo, but there is plenty more work to be done to strengthen the existing mitigations and to try to recover some performance without reopening security holes.
This talk will look at speculative execution sidechannels, the work which has already been done to mitigate the security holes, and future work which hopes to bring some improvements.
XPDDS19: Keeping Coherency on Arm: Reborn - Julien Grall, Arm ltd
The Arm architecture provides a set of guidelines that any software should abide by when accessing the memory with MMU off and update page-tables. Failing to do so may result in getting TLB conflicts or breaking coherency.
In a previous talk ("Keeping coherency on Arm"), we focused on updating safely the stage-2 (aka P2M) page-tables. This talk will focus on the boot code and Xen memory management.
During this session, we will introduce some of the guidelines and when they should be used. We will also discuss how Xen boot sequence needs to be reworked to avoid breaking the guidelines.
XPDDS19: QEMU PV Backend 'qdevification'... What Does it Mean? - Paul Durrant...
XPDDS19: QEMU PV Backend 'qdevification'... What Does it Mean? - Paul Durrant...The Linux Foundation
For many years the QEMU codebase has contained PV backends for Xen guests, giving them paravirtual access to storage, network, keyboard, mouse, etc. however these backends have not been configurable as QEMU devices as their implementation did not fully adhere to the QEMU Object Model (QOM).
Particularly the PV storage backend not using proper QOM devices, or qdevs, meant that the QEMU block layer needed to maintain legacy code that was cluttering up the source. This was causing push-back from the maintainers who did not want to accept any patches relating to that Xen backend until it was 'qdevified'.
In this talk, I'll explain the modifications I made to QEMU to achieve 'qdevification' of the PV storage backend, how compatibility with the libxl toolstack was maintained, and what the next steps in both QEMU and libxl development should be.XPDDS19: Status of PCI Emulation in Xen - Roger Pau Monné, Citrix Systems R&D
PCI is a local computer bus for attaching hardware devices in a computer, and is the main peripheral bus on modern x86 systems. As such, having a proper way to emulate it is crucial for Xen to be able to expose both fully emulated devices or passthrough devices to guests.
This talk will focus on the current status of PCI emulation in Xen, how and where it is used, what are its main limitations and future plans to improve it in order to be more robust and modular.
XPDDS19: [ARM] OP-TEE Mediator in Xen - Volodymyr Babchuk, EPAM Systems
Volodymyr will speak about TEE mediators. This is a new feature in Xen which allows multiple virtual machines to interact with Trusted Execution Environment available on platform. He developed mediator for one of TEEs, namely OP-TEE.
He will give background information on why TEE is needed at all and share some implementation details.
XPDDS19: Bringing Xen to the Masses: The Story of Building a Community-driven...
XPDDS19: Bringing Xen to the Masses: The Story of Building a Community-driven...The Linux Foundation
Xen is a very powerful hypervisor with a talented and diverse developers community. Despite the fact it's almost everywhere (from the Cloud to the embedded world), it can be difficult to set up and manage as a system administrator. General purpose distros have Xen packages, but that's just a start in your Xen journey: you need some tooling and knowledge to have a working and scalable platform.
XCP-ng was built to overcome those issues: by bringing Xen to the masses with a fully turnkey distro with Xen as its core. It's the logical sequel to the XCP project, with a community focus from the start. We'll see how it happened, what we did, and what's next. Finally, we'll see the impact of XCP-ng on the Xen Project.XPDDS19: Will Robots Automate Your Job Away? Streamlining Xen Project Contrib...
XPDDS19: Will Robots Automate Your Job Away? Streamlining Xen Project Contrib...The Linux Foundation
Doug has long advocated for more CI/CD (Continuous Integration / Continuous Delivery) processes to be adopted by the Xen Project from the use of Travis CI and now GitLab CI. This talk aims to propose ideas for building upon the existing process and transforming the development process to provide users a higher quality with each release by the Xen Project.XPDDS19: Client Virtualization Toolstack in Go - Nick Rosbrook & Brendan Kerr...
XPDDS19: Client Virtualization Toolstack in Go - Nick Rosbrook & Brendan Kerr...The Linux Foundation
High level toolstacks for server and cloud virtualization are very mature with large communities using and supporting them. Client virtualization is a much more niche community with unique requirements when compared to those found in the server space. In this talk, we’ll introduce a client virtualization toolstack for Xen (redctl) that we are using in Redfield, a new open-source client virtualization distribution that builds upon the work done by the greater virtualization and Linux communities. We will present a case for maturing libxl’s Go bindings and discuss what advantages Go has to offer for high level toolstacks, including in the server space.XPDDS19: Core Scheduling in Xen - Jürgen Groß, SUSE
Today Xen is scheduling guest virtual cpus on all available physical cpus independently from each other. Recent security issues on modern processors (e.g. L1TF) require to turn off hyperthreading for best security in order to avoid leaking information from one hyperthread to the other. One way to avoid having to turn off hyperthreading is to only ever schedule virtual cpus of the same guest on one physical core at the same time. This is called core scheduling.
This presentation shows results from the effort to implement core scheduling in the Xen hypervisor. The basic modifications in Xen are presented and performance numbers with core scheduling active are shown.
More from The Linux Foundation (20)
XPDDS19: How TrenchBoot is Enabling Measured Launch for Open-Source Platform ...
XPDDS19: How TrenchBoot is Enabling Measured Launch for Open-Source Platform ...
XPDDS19 Keynote: Xen in Automotive - Artem Mygaiev, Director, Technology Solu...
XPDDS19 Keynote: Xen in Automotive - Artem Mygaiev, Director, Technology Solu...
XPDDS19 Keynote: Xen Project Weather Report 2019 - Lars Kurth, Director of Op...
XPDDS19 Keynote: Xen Project Weather Report 2019 - Lars Kurth, Director of Op...
XPDDS19 Keynote: Secret-free Hypervisor: Now and Future - Wei Liu, Software E...
XPDDS19 Keynote: Secret-free Hypervisor: Now and Future - Wei Liu, Software E...
XPDDS19 Keynote: Xen Dom0-less - Stefano Stabellini, Principal Engineer, Xilinx
XPDDS19 Keynote: Xen Dom0-less - Stefano Stabellini, Principal Engineer, Xilinx
XPDDS19 Keynote: Patch Review for Non-maintainers - George Dunlap, Citrix Sys...
XPDDS19 Keynote: Patch Review for Non-maintainers - George Dunlap, Citrix Sys...
XPDDS19: Memories of a VM Funk - Mihai Donțu, Bitdefender
XPDDS19: Memories of a VM Funk - Mihai Donțu, Bitdefender
OSSJP/ALS19: The Road to Safety Certification: Overcoming Community Challeng...
OSSJP/ALS19: The Road to Safety Certification: Overcoming Community Challeng...
OSSJP/ALS19: The Road to Safety Certification: How the Xen Project is Making...
OSSJP/ALS19: The Road to Safety Certification: How the Xen Project is Making...
XPDDS19: Speculative Sidechannels and Mitigations - Andrew Cooper, Citrix
XPDDS19: Speculative Sidechannels and Mitigations - Andrew Cooper, Citrix
XPDDS19: Keeping Coherency on Arm: Reborn - Julien Grall, Arm ltd
XPDDS19: Keeping Coherency on Arm: Reborn - Julien Grall, Arm ltd
XPDDS19: QEMU PV Backend 'qdevification'... What Does it Mean? - Paul Durrant...
XPDDS19: QEMU PV Backend 'qdevification'... What Does it Mean? - Paul Durrant...
XPDDS19: Status of PCI Emulation in Xen - Roger Pau Monné, Citrix Systems R&D
XPDDS19: Status of PCI Emulation in Xen - Roger Pau Monné, Citrix Systems R&D
XPDDS19: [ARM] OP-TEE Mediator in Xen - Volodymyr Babchuk, EPAM Systems
XPDDS19: [ARM] OP-TEE Mediator in Xen - Volodymyr Babchuk, EPAM Systems
XPDDS19: Bringing Xen to the Masses: The Story of Building a Community-driven...
XPDDS19: Bringing Xen to the Masses: The Story of Building a Community-driven...
XPDDS19: Will Robots Automate Your Job Away? Streamlining Xen Project Contrib...
XPDDS19: Will Robots Automate Your Job Away? Streamlining Xen Project Contrib...
XPDDS19: Client Virtualization Toolstack in Go - Nick Rosbrook & Brendan Kerr...
XPDDS19: Client Virtualization Toolstack in Go - Nick Rosbrook & Brendan Kerr...
XPDDS19: Core Scheduling in Xen - Jürgen Groß, SUSE
XPDDS19: Core Scheduling in Xen - Jürgen Groß, SUSE
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如果您处于以下几种情况：
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◇企事业单位必须要求办理的
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◇申请留学生创业基金
留信网认证的作用:
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3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
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◆◆◆◆◆ — — — — — — — — 【留学教育】留学归国服务中心 — — — — — -◆◆◆◆◆
【主营项目】
一.毕业证【微信：176555708】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【微信：176555708】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分→ 【关于价格问题（保证一手价格）
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
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国外毕业证学位证成绩单如何办理：
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2开始安排制作皇家墨尔本理工大学毕业证成绩单电子图；
3毕业证成绩单电子版做好以后发送给您确认；
4毕业证成绩单电子版您确认信息无误之后安排制作成品；
5成品做好拍照或者视频给您确认；
6快递给客户（国内顺丰国外DHLUPS等快读邮寄）。
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制作原版1:1(Monash毕业证)莫纳什大学毕业证成绩单办理假
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2开始安排制作莫纳什大学毕业证成绩单电子图；
3莫纳什大学毕业证成绩单电子版做好以后发送给您确认；
4莫纳什大学毕业证成绩单电子版您确认信息无误之后安排制作成品；
5莫纳什大学成品做好拍照或者视频给您确认；
6快递给客户（国内顺丰国外DHLUPS等快读邮寄）
— — — — — — — — — — — 《文凭顾问微信：176555708》
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留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
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可查真实(Monash毕业证)西澳大学毕业证成绩单退学买
办理假西澳大学毕业证【微信176555708】购买,办理Monash成绩单,Monash毕业证制作【微信176555708】【西澳大学毕业证】，Monash毕业证购买，Monash学位证，西澳大学学位证【Monash成绩单制作】【Monash毕业证文凭 Monash本科 澳洲学历认证原版制作【diploma certificate degree transcript 】【留信网认证，本科，硕士，海归，博士，排名，成绩单】代办国外（海外）澳洲、韩国、加拿大、新西兰等各大学毕业证。 ?我们对海外大学及学院的毕业证成绩单所使用的材料，尺寸大小，防伪结构（包括：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。 文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）都有原版本文凭对照。#一整套西澳大学文凭证件办理#—包含西澳大学西澳大学毕业证成绩单学历认证|使馆认证|归国人员证明|教育部认证|留信网认证永远存档教育部学历学位认证查询办理国外文凭国外学历学位认证#我们提供全套办理服务。
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二：真实使馆认证（留学人员回国证明）使馆存档
三：真实教育部认证教育部存档教育部留服网站永久可查
四：留信认证留学生信息网站永久可查
国外毕业证学位证成绩单办理方法：
1客户提供办理西澳大学西澳大学毕业证成绩单信息：姓名生日专业学位毕业时间等（如信息不确定可以咨询顾问：我们有专业老师帮你查询）；
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教育部文凭学历认证认证的用途：
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成绩单ps(UST毕业证)圣托马斯大学毕业证成绩单快速办理
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四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
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◇面对父母的压力，希望尽快拿到；
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◇回国时间很长，忘记办理；
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◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分→ 【关于价格问题（保证一手价格）
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
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我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
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Explore-Insanony: Watch Instagram Stories Secretly
Instagram has become one of the most popular social media platforms, allowing people to share photos, videos, and stories with their followers. Sometimes, though, you might want to view someone's story without them knowing.
Meet up Milano 14 _ Axpo Italia_ Migration from Mule3 (On-prem) to.pdf
Quattordicesimo Meetup di Milano, tenutosi a Milano il 23 Maggio 2024 dalle ore 17:00 alle ore 18:30 in presenza e da remoto.
Abbiamo parlato di come Axpo Italia S.p.A. ha ridotto il technical debt migrando le proprie APIs da Mule 3.9 a Mule 4.4 passando anche da on-premises a CloudHub 1.0.
Should Repositories Participate in the Fediverse?
Presentation for OR2024 making the case that repositories could play a part in the "fediverse" of distributed social applications
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Explore-Insanony: Watch Instagram Stories Secretly
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Meet up Milano 14 _ Axpo Italia_ Migration from Mule3 (On-prem) to.pdf
Meet up Milano 14 _ Axpo Italia_ Migration from Mule3 (On-prem) to.pdf
LCNA14: Security in the Cloud: Containers, KVM, and Xen - George Dunlap, Citrix Systems UK Ltd
- 1. Security in the Cloud: Xen, KVM, Containers Or, Surviving and the Zombie Apocalypse
- 2. “Some people make the mistake of thinking of containers as a better and faster way of running virtual machines. From a security point of view, containers are much weaker.” –Dan Walsh (Mr. SELinux)
- 3. “There's contentions all over the place that containers are not actually as secure as hypervisors. This is not really true. Parallels and Virtuozo, we've been running secure containers for at least 10 years.” –James Bottomley, Linux Maintainer and Parallels CTO
- 4. “Virtual Machines might be more secure today, but containers are definitely catching up.” –Jerome Petazzoni, Senior Software Engineer at Docker
- 5. “You are absolutely deluded, if not stupid, if you think that a worldwide collection of software engineers who can't write operating systems or applications without security holes, can then turn around and suddenly write virtualization layers without security holes.” –Theo de Raadt, OpenBSD project lead
- 6. "Some people make the mistake of thinking of containers as a better and faster way of running virtual machines. From a security point of view, containers are much weaker." -Dan Walsh "There's contentions all over the place that containers are not actually as secure as hypervisors. This is not really true. Parallels and Virtuozo, we've been running secure containers for at least 10 years.” -James Bottomley "Virtual Machines might be more secure today, but containers are definitely catching up." -Jerome Petazzoni "You are absolutely deluded, if not stupid, if you think that a worldwide collection of software engineers who can't write operating systems or applications without security holes, can then turn around and suddenly write virtualization layers without security holes." -Theo de Raadt
- 7. Who am I?
- 8. What I’m going to talk about
- 11. A vulnerability is a mistake.
- 16. Intel SYSRET
- 23. Every window is an opportunity to make a mistake
- 24. Every element of every interface is an opportunity to make a mistake
- 25. But does this really matter?
- 27. Would this affect a system configured reasonably for security?
- 28. Xen: Access to HV memory >5TiB during migration
- 29. Xen: Unsecured PV console parameters
- 30. Xen: 1 year, 1-4 known vulnerabilities
- 31. KVM: Escalation in vhost
- 32. KVM: PUSHA instruction emulation
- 33. KVM: vcpu hypercall boundary check
- 34. KVM: vlapic shared page crossing a page boundary
- 35. KVM: 1 year, 4 solid vulnerabilities
- 36. qemu: VMWare emulated device
- 37. qemu: virtio-net mac address update
- 38. qemu: 1 year, 2 known vulnerabilities
- 39. Linux: ping
- 40. Linux: tty race condition
- 41. Linux: ptrace and SYSRET
- 42. Linux: AIO, arbitrary read of kernel memory
- 43. Linux: Futex not checking if two pointers were different (2)
- 44. Linux: AMD math coprocessor
- 45. Linux: 2 months, 6 vulnerabilities
- 46. Hypervisors: Low (but not zero) risk
- 47. General-purpose containers: Not so good
- 48. Application-specific containers + seccomp2?
- 50. Questions?