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Virtual Machine Escape
In computer security, virtual machine escape is the process of a program breaking out of the virtual machine on which it is running and interacting with the host operating system. A virtual machine is a "completely isolated guest operating system installation within a normal host operating system". In 2008, a vulnerability () in VMware discovered by Core Security Technologies made VM escape possible on VMware Workstation 6.0.2 and 5.5.4. A fully working exploit labeled ''Cloudburst'' was developed by Immunity Inc. for Immunity CANVAS (commercial penetration testing tool). Cloudburst was presented in Black Hat USA 2009. Previous known vulnerabilities * Xen pygrub: Command injection in grub.conf file. * Directory traversal vulnerability in shared folders feature for VMware * Directory traversal vulnerability in shared folders feature for VMware * Xen Para Virtualized Frame Buffer backend buffer overflow. * Cloudburst: VM display function in VMware * QEMU-KVM: PIIX4 emulation does not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Security
Computer security, cybersecurity (cyber security), or information technology security (IT security) is the protection of computer systems and networks from attack by malicious actors that may result in unauthorized information disclosure, theft of, or damage to hardware, software, or data, as well as from the disruption or misdirection of the services they provide. The field has become of significance due to the expanded reliance on computer systems, the Internet, and wireless network standards such as Bluetooth and Wi-Fi, and due to the growth of smart devices, including smartphones, televisions, and the various devices that constitute the Internet of things (IoT). Cybersecurity is one of the most significant challenges of the contemporary world, due to both the complexity of information systems and the societies they support. Security is of especially high importance for systems that govern large-scale systems with far-reaching physical effects, such as power distribution, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virtual Machine
In computing, a virtual machine (VM) is the virtualization/emulation of a computer system. Virtual machines are based on computer architectures and provide functionality of a physical computer. Their implementations may involve specialized hardware, software, or a combination. Virtual machines differ and are organized by their function, shown here: * '' System virtual machines'' (also termed full virtualization VMs) provide a substitute for a real machine. They provide functionality needed to execute entire operating systems. A hypervisor uses native execution to share and manage hardware, allowing for multiple environments which are isolated from one another, yet exist on the same physical machine. Modern hypervisors use hardware-assisted virtualization, virtualization-specific hardware, primarily from the host CPUs. * Process virtual machines are designed to execute computer programs in a platform-independent environment. Some virtual machine emulators, such as QEMU and video ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operating System
An operating system (OS) is system software that manages computer hardware, software resources, and provides common services for computer programs. Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, printing, and other resources. For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware, although the application code is usually executed directly by the hardware and frequently makes system calls to an OS function or is interrupted by it. Operating systems are found on many devices that contain a computer from cellular phones and video game consoles to web servers and supercomputers. The dominant general-purpose personal computer operating system is Microsoft Windows with a market share of around 74.99%. macOS by Apple Inc. is in second place (14.84%), and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VMware
VMware, Inc. is an American cloud computing and virtualization technology company with headquarters in Palo Alto, California. VMware was the first commercially successful company to virtualize the x86 architecture. VMware's desktop software runs on Microsoft Windows, Linux, and macOS. VMware ESXi, its enterprise software hypervisor, is an operating system that runs on server hardware. In May 2022, Broadcom Inc. announced an agreement to acquire VMware in a cash-and-stock transaction valued at $61 billion. History Early history In 1998, VMware was founded by Diane Greene, Mendel Rosenblum, Scott Devine, Ellen Wang and Edouard Bugnion. Greene and Rosenblum were both graduate students at the University of California, Berkeley. Edouard Bugnion remained the chief architect and CTO of VMware until 2005, and went on to found Nuova Systems (now part of Cisco). For the first year, VMware operated in stealth mode, with roughly 20 employees by the end of 1998. The company was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Core Security Technologies
Core Security by HelpSystems is an American computer and network security company provides cyber threat prevention and identity access management software products and services, including penetration testing, network traffic analysis, threat detection, privileged access management, and identity governance The company’s research arm, CoreLabs, identifies new IT security vulnerabilities, publishes public vulnerability advisories, and works with vendors to assist in eliminating the exposures they find. In February 2019, HelpSystems acquired the Core Security products from SecureAuth. HelpSystems is a global enterprise software company working in the areas automation and cybersecurity. History In 1996, Core Security was founded in Buenos Aires, Argentina. One year later, the CoreLabs Research group was established and published their first advisory. Core conducted its first penetration test for a U.S. company in 1998. In the same year, Core Security was recognized as an "Endeavor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ZDNet
ZDNET is a business technology news website owned and operated by Red Ventures. The brand was founded on April 1, 1991, as a general interest technology portal from Ziff Davis and evolved into an enterprise IT-focused online publication. History Beginnings: 1991 to 1995 ZDNET began as a subscription-based digital service called "ZiffNet" that offered computing information to users of CompuServe. It featured computer industry forums, events, features and searchable archives. Initially, ZiffNet was intended to serve as a common place to find content from all Ziff-Davis print publications. As such, ZiffNet was an expansion on an earlier online service called PCMagNet for readers of PC Magazine. Launched in 1988, PCMagNet in turn was the evolution of Ziff Davis' first electronic publishing venture, a bulletin board, which launched in 1985. On June 20, 1995, Ziff-Davis announced the consolidation of its online information services under a single name, ''ZD Net''. The service had ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Immunity Inc
Immunity may refer to: Medicine * Immunity (medical), resistance of an organism to infection or disease * ''Immunity'' (journal), a scientific journal published by Cell Press Biology * Immune system Engineering * Radiofrequence immunity describes how well an electronic circuit is protected against electromagnetic interference Law *Legal immunity, the concept of a person or entity being immune from legal liability due to a special status **Absolute immunity, a type of immunity for government officials that confers total immunity when acting in the course of their duties **Amnesty law, a law that provides immunity for past crimes **Charitable immunity, immunity from liability granted to charities in many countries from the 19th century to the mid-20th century **Diplomatic immunity, agreement between sovereign governments to exclude diplomats from local laws **Immunity from prosecution (international law), exclusion of governments or their officials from prosecution under intern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Hat Briefings
Black Hat Briefings (commonly referred to as Black Hat) is a computer security conference that provides security consulting, training, and briefings to hackers, corporations, and government agencies around the world. Black Hat brings together a variety of people interested in information security ranging from non-technical individuals, executives, hackers, and security professionals. The conference takes place regularly in Las Vegas, Barcelona, London and Riyadh. The conference has also been hosted in Amsterdam, Tokyo, and Washington, D.C. in the past. History The first Black Hat was held July 7-10, 1997 in Las Vegas, immediately prior to DEF CON 5. The conference was aimed at the computer industry, promising to give them privileged insight into the minds and motivations of their hacker adversaries. Its organizers stated: "While many conferences focus on information and network security, only the Black Hat Briefings will put your engineers and software programmers face-to-face ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VENOM (security Vulnerability)
Venom or zootoxin is a type of toxin produced by an animal that is actively delivered through a wound by means of a bite, sting, or similar action. The toxin is delivered through a specially evolved ''venom apparatus'', such as fangs or a stinger, in a process called envenomation. Venom is often distinguished from poison, which is a toxin that is passively delivered by being ingested, inhaled, or absorbed through the skin, and toxungen, which is actively transferred to the external surface of another animal via a physical delivery mechanism. Venom has evolved in terrestrial and marine environments and in a wide variety of animals: both predators and prey, and both vertebrates and invertebrates. Venoms kill through the action of at least four major classes of toxin, namely necrotoxins and cytotoxins, which kill cells; neurotoxins, which affect nervous systems; myotoxins, which damage muscles; and haemotoxins, which disrupt blood clotting. Venomous animals cause tens of thous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyperjacking
Hyperjacking is an attack in which a hacker takes malicious control over the hypervisor that creates the virtual environment within a virtual machine (VM) host. The point of the attack is to target the operating system that is below that of the virtual machines so that the attacker's program can run and the applications on the VMs above it will be completely oblivious to its presence. Overview Hyperjacking involves installing a malicious, fake hypervisor that can manage the entire server system. Regular security measures are ineffective because the operating system will not be aware that the machine has been compromised. In hyperjacking, the hypervisor specifically operates in stealth mode and runs beneath the machine, it makes it more difficult to detect and more likely to gain access to computer servers where it can affect the operation of the entire institution or company. If the hacker gains access to the hypervisor, everything that is connected to that server can be manip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virtualization
In computing, virtualization or virtualisation (sometimes abbreviated v12n, a numeronym) is the act of creating a virtual (rather than actual) version of something at the same abstraction level, including virtual computer hardware platforms, storage devices, and computer network resources. Virtualization began in the 1960s, as a method of logically dividing the system resources provided by mainframe computers between different applications. An early and successful example is IBM CP/CMS. The control program CP provided each user with a simulated stand-alone System/360 computer. Since then, the meaning of the term has broadened. Hardware virtualization ''Hardware virtualization'' or ''platform virtualization'' refers to the creation of a virtual machine that acts like a real computer with an operating system. Software executed on these virtual machines is separated from the underlying hardware resources. For example, a computer that is running Arch Linux may host a virtual machi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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