Sandboxing & Permissions
Implement strategies to further restrict WASM module capabilities and manage permissions in host environments.
WASM's Security Sandbox
WebAssembly (WASM) is designed with security at its core. It operates within a tightly controlled environment known as a sandbox.
This sandboxing mechanism isolates WASM code from the host system, preventing it from directly accessing sensitive resources or executing arbitrary operations outside its allocated space.
Inherent Restrictions
By default, a WASM module has no direct access to common system capabilities such as:
- The host's file system
- Network interfaces
- Environment variables
- Arbitrary memory outside its linear memory
This strict isolation is a fundamental security feature, making WASM a safe choice for executing untrusted code.