Virtualization Protection
Virtualization Protection
Cloud providers virtualize resource pools and allocate them to multiple customers on shared hardware. This requires strong isolation and hardening.
Key Concepts
- Hypervisor hardening
- Patching and updating the hypervisor
- Monitoring and logging hypervisor activity
- Host OS patching
- Instance isolation
- Logical isolation and sandbox testing
- Prevention of data leakage and inter-VM attacks
VM Escape / Guest Escape
A VM escape occurs when a process running inside a virtual machine interacts directly with the host OS or hypervisor.
Protection Techniques
- Patch VMs and VM software regularly
- Install only necessary software
- Use trusted applications only
- Use strong passwords and access controls
- Restrict VM access
- Monitor for guest escape attempts and attacks
Security Objective
The goal is to preserve separation between workloads, prevent privilege escalation, and protect the underlying host and hypervisor from compromise.