Fix the security audit's findings

Fixes the nine findings of security audit run 1 on 2.4.1 (T1-T11).

F1: Uploads that are not complete now count only the bytes the server
received, and a chunk that goes above the storage quota gets 422. An
anonymous uploader can no longer fill the quota with declared sizes.

F2: The share password and the admin login have a second limit without
the address (20 attempts per minute per share and per e-mail), because
a forged X-Forwarded-For changes the address.

F3: The system password gate and the admin check now also run on
Livewire updates, so an old uploader snapshot cannot register files.

F4: The session keeps a fingerprint of the system password's hash.
When the admin changes the system password, earlier verifications end.

F5: The page after the upload opens only in the session that created
the share, and only while recipients can still reach the share.

F6: The share password limit counts an attempt before the password is
checked, so parallel attempts cannot pass it.

F7: The system password has the same two limits (5 per address, 20 in
total per minute).

F8: A password change or reset signs the user's other sessions out.

F9: The only admin cannot delete the account, which would open /setup
to every visitor.

The setup wizard also holds the admin password to the password
defaults, and Livewire applies EnsureAdmin to updates.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
2026-10-22 14:46:38 +02:00
co-authored by Claude Opus 5.5
parent 014184c824
commit 84c8b81f0a
26 changed files with 566 additions and 45 deletions
@@ -2,7 +2,9 @@
use App\Concerns\PasswordValidationRules;
use App\Livewire\Actions\Logout;
use App\Models\User;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\DB;
use Livewire\Component;
new class extends Component {
@@ -12,7 +14,15 @@ new class extends Component {
public bool $showDeleteModal = false;
/**
* Delete the currently authenticated user.
* Whether the user is the only admin: deleting that account would open /setup to anyone.
*/
public function isLastAdmin(): bool
{
return Auth::user()->is_admin && ! User::query()->where('is_admin', true)->whereKeyNot(Auth::id())->exists();
}
/**
* Delete the currently authenticated user, unless it is the only admin.
*/
public function deleteUser(Logout $logout): void
{
@@ -20,29 +30,50 @@ new class extends Component {
'password' => $this->currentPasswordRules(),
]);
tap(Auth::user(), $logout(...))->delete();
// The admin rows stay locked until the delete, so two admins cannot delete each other's last peer at once.
$deleted = DB::transaction(function () use ($logout): bool {
User::query()->where('is_admin', true)->lockForUpdate()->get();
if ($this->isLastAdmin()) {
return false;
}
tap(Auth::user(), $logout(...))->delete();
return true;
});
if (! $deleted) {
$this->addError('password', __('You are the only admin, so this account cannot be deleted.'));
return;
}
$this->redirect('/', navigate: true);
}
}; ?>
<x-card :title="__('Delete account')" :subtitle="__('Delete your account and all of its resources')" heading="h2" variant="outlined">
<x-button :label="__('Delete account')" danger icon="delete" wire:click="$set('showDeleteModal', true)" data-test="delete-user-button" />
@if ($this->isLastAdmin())
<p class="md-type-body-md md-ink-variant">{{ __('You are the only admin, so this account cannot be deleted.') }}</p>
@else
<x-button :label="__('Delete account')" danger icon="delete" wire:click="$set('showDeleteModal', true)" data-test="delete-user-button" />
<x-modal wire:model="showDeleteModal" :title="__('Are you sure you want to delete your account?')" icon="delete">
<x-stack gap="space200">
<p>
{{ __('Once your account is deleted, all of its resources and data will be permanently deleted. Please enter your password to confirm you would like to permanently delete your account.') }}
</p>
<x-modal wire:model="showDeleteModal" :title="__('Are you sure you want to delete your account?')" icon="delete">
<x-stack gap="space200">
<p>
{{ __('Once your account is deleted, all of its resources and data will be permanently deleted. Please enter your password to confirm you would like to permanently delete your account.') }}
</p>
<x-form id="delete-user-form" wire:submit="deleteUser">
<x-password wire:model="password" :label="__('Password')" autocomplete="current-password" />
</x-form>
</x-stack>
<x-form id="delete-user-form" wire:submit="deleteUser">
<x-password wire:model="password" :label="__('Password')" autocomplete="current-password" />
</x-form>
</x-stack>
<x-slot:actions>
<x-button :label="__('Cancel')" x-on:click="close()" />
<x-button type="submit" form="delete-user-form" :label="__('Delete account')" danger data-test="confirm-delete-user-button" />
</x-slot:actions>
</x-modal>
<x-slot:actions>
<x-button :label="__('Cancel')" x-on:click="close()" />
<x-button type="submit" form="delete-user-form" :label="__('Delete account')" danger data-test="confirm-delete-user-button" />
</x-slot:actions>
</x-modal>
@endif
</x-card>