Virtualisation security covers hypervisors, virtual machines, and isolated workloads, where flaws or misconfiguration can expose systems and data.
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Background for this topic.
Virtualisation uses software to divide or simulate computing resources so multiple isolated virtual machines (VMs) can share a physical host. Each VM can run its own operating system and applications; a hypervisor controls access to the host’s processors, memory, storage and devices. The term can also include virtual networks and storage, while containers provide a related but less isolated form of workload virtualisation.
Security depends on the hypervisor and its management plane being securely configured, patched and access-controlled. A hypervisor vulnerability or misconfiguration can expose data across VMs, and a VM escape can allow code running in one guest to reach the host or other guests. Virtual machine images, templates and snapshots may retain credentials or sensitive data and therefore require inventory, integrity checks, encryption and controlled retention. Network segmentation between virtual workloads should be enforced through explicit policies rather than assumed from virtual separation. These controls also support reliable investigation and recovery by preserving trustworthy images and records of administrative changes.
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Threat actors have been observed attempting to exploit a recently patched critical security flaw in Gitea Docker images, according to Sysdig
A high-severity security vulnerability has been disclosed in Docker Engine that could permit an attacker to bypass authorization plugins (AuthZ) under specific circumstances
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday added a recently disclosed security flaw impacting Broadcom VMware Aria Operations to its Known Exploited Vulnerabilities (KEV) catalog, citing active exploitation in the wild
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added a critical security flaw affecting Broadcom VMware vCenter Server that was patched in June 2024 to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation in the wild
Docker has released fixes to address a critical security flaw affecting the Docker Desktop app for Windows and macOS that could potentially allow an attacker to break out of the confines of a container