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.
Weekly headline count for the current query.
Even the most careful VMware customers may need to go back and double check that they weren't compromised by a zero-day exploit for CVE-2023-34048.
The fresh "ESXiArgs" malware is exploiting a 2-year-old RCE security vulnerability (tracked as CVE-2021-21974), resulting in thousands of unpatched servers falling prey to the campaign.
An insider threat or remote attacker with initial access could exploit CVE-2022-31676 to steal sensitive data and scoop up user credentials for follow-on attacks.
A critical VMware bug tracked as CVE-2022-22954 continues to draw cybercriminal moths to its remote code-execution flame, with recent attacks focused on botnets and Log4Shell.