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Author SHA1 Message Date
Victor Lyuboslavsky
58563852f0
Bitlocker: do not decrypt already encrypted drive. (#43130)
<!-- Add the related story/sub-task/bug number, like Resolves #123, or
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**Related issue:** Resolves #40809

**Orbit agent: key rotation replaces decrypt-then-re-encrypt:**
- When the disk is already encrypted, orbit now adds a new Fleet-managed
recovery key protector, removes old ones, and escrows the new key. The
disk is never decrypted.
- If key escrow fails, the rotated key is cached in memory and retried
on subsequent ticks without rotating again.
- Removes `DecryptVolume` and `decrypt()` (no longer called from
production code).

**Server: osquery query returns both protection_status and
conversion_status:**
- The `disk_encryption_windows` query now returns both columns instead
of just checking `protection_status = 1`. This lets the server correctly
identify a disk as encrypted via `conversion_status = 1` even when
`protection_status = 0`.
- New `directIngestDiskEncryptionWindows` function parses both values,
handles parse errors, and normalizes `protection_status = 2` (unknown)
to NULL.

**Server: new `bitlocker_protection_status` column and status logic:**
- Adds `bitlocker_protection_status` column to `host_disks` (DB
migration).
- When a disk is encrypted and key is escrowed but protection is off,
the host shows "Action required" with a detail message explaining the
issue, instead of misleadingly showing "Verified."
- `protection_status = 2` (unknown) and `NULL` (older orbit hosts) are
treated as protection on for backward compatibility.
- The `profiles_verified` and `profiles_verifying` branches in the
combined profiles+BitLocker summary now handle
`bitlocker_action_required`, counting those hosts as "pending".

Contributor docs updates: https://github.com/fleetdm/fleet/pull/43241
Public docs updates: https://github.com/fleetdm/fleet/pull/43243/changes

# Checklist for submitter

If some of the following don't apply, delete the relevant line.

- [x] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.

## Testing

- [x] Added/updated automated tests
- [x] QA'd all new/changed functionality manually

## Database migrations

- [x] Checked schema for all modified table for columns that will
auto-update timestamps during migration.

## fleetd/orbit/Fleet Desktop

- [x] Verified compatibility with the latest released version of Fleet
(see [Must
rule](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/workflows/fleetd-development-and-release-strategy.md))
- [x] If the change applies to only one platform, confirmed that
`runtime.GOOS` is used as needed to isolate changes
- [x] Verified that fleetd runs on macOS, Linux and Windows
- [x] Verified auto-update works from the released version of component
to the new version (see [tools/tuf/test](../tools/tuf/test/README.md))


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

## Release Notes

* **Bug Fixes**
* Fixed Windows BitLocker encryption/decryption request loop on systems
with secondary drives and auto-unlock.

* **New Features**
* Added BitLocker recovery key rotation capability, allowing safe key
updates without full disk re-encryption.
* Enhanced BitLocker protection status tracking to correctly display
"Action required" when protection is disabled.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->
2026-04-09 18:33:03 -04:00