Docker Sandboxes sbx cp follows workspace symlinks outside the authorized host directory

Summary

Docker Sandboxes sbx cp does not safely confine host-side paths to a shared workspace. A malicious sandbox can create or replace a workspace symlink so that a later user-initiated copy reads a host file outside the workspace into the sandbox or writes sandbox-controlled data to a host path outside the workspace with the invoking user's permissions.

Remediation

1. Inventory every Docker Docker Sandboxes deployment, including staging.
2. Upgrade Docker Docker Sandboxes to 0.51.0.
3. Confirm the running version after the upgrade.

References

• Referencehttps://docs.docker.com/ai/sandboxes/
• Referencehttps://docs.docker.com/ai/sandboxes/security/isolation/
• Referencehttps://github.com/docker/sbx-releases/releases/tag/v0.51.0