fix(coderd): prevent cross-tenant workspace app rebinding (#26103) (#… · coder/coder@e4a7657

})

}

func TestUpsertWorkspaceAppCannotRebindAcrossWorkspaces(t *testing.T) {

t.Parallel()

db, _ := dbtestutil.NewDB(t)

org := dbgen.Organization(t, db, database.Organization{})

ctx := testutil.Context(t, testutil.WaitShort)

// createWorkspace builds the owner -> template -> version -> workspace chain

// and returns the workspace plus its template version so callers can create

// additional builds (and thus agents) within the same workspace.

createWorkspace := func(t *testing.T) (database.WorkspaceTable, uuid.UUID) {

t.Helper()

user := dbgen.User(t, db, database.User{})

template := dbgen.Template(t, db, database.Template{

OrganizationID: org.ID,

CreatedBy: user.ID,

})

version := dbgen.TemplateVersion(t, db, database.TemplateVersion{

TemplateID: uuid.NullUUID{Valid: true, UUID: template.ID},

OrganizationID: org.ID,

CreatedBy: user.ID,

})

workspace := dbgen.Workspace(t, db, database.WorkspaceTable{

OrganizationID: org.ID,

TemplateID: template.ID,

OwnerID: user.ID,

})

return workspace, version.ID

}

// addAgent creates a build, resource, and agent for the workspace. The

// build's JobID matches the resource's JobID so the upsert's

// agent -> resource -> workspace_builds(job_id) -> workspace_id traversal

// resolves to the workspace.

addAgent := func(t *testing.T, workspace database.WorkspaceTable, versionID uuid.UUID, buildNumber int32) database.WorkspaceAgent {

t.Helper()

job := dbgen.ProvisionerJob(t, db, nil, database.ProvisionerJob{

Type: database.ProvisionerJobTypeWorkspaceBuild,

OrganizationID: org.ID,

})

dbgen.WorkspaceBuild(t, db, database.WorkspaceBuild{

BuildNumber: buildNumber,

JobID: job.ID,

WorkspaceID: workspace.ID,

TemplateVersionID: versionID,

})

resource := dbgen.WorkspaceResource(t, db, database.WorkspaceResource{

JobID: job.ID,

})

return dbgen.WorkspaceAgent(t, db, database.WorkspaceAgent{

ResourceID: resource.ID,

})

}

upsertApp := func(appID, agentID uuid.UUID, slug string) (database.WorkspaceApp, error) {

return db.UpsertWorkspaceApp(ctx, database.UpsertWorkspaceAppParams{

ID: appID,

CreatedAt: dbtime.Now(),

AgentID: agentID,

Slug: slug,

DisplayName: "Code Server",

Icon: "/icon.png",

SharingLevel: database.AppSharingLevelOwner,

Health: database.WorkspaceAppHealthDisabled,

OpenIn: database.WorkspaceAppOpenInSlimWindow,

})

}

// Given: two independent workspaces, each with an agent that resolves to its

// own workspace.

workspaceA, versionA := createWorkspace(t)

workspaceB, versionB := createWorkspace(t)

agentA := addAgent(t, workspaceA, versionA, 1)

agentB := addAgent(t, workspaceB, versionB, 1)

gotA, err := db.GetWorkspaceByAgentID(ctx, agentA.ID)

require.NoError(t, err)

require.Equal(t, workspaceA.ID, gotA.ID)

gotB, err := db.GetWorkspaceByAgentID(ctx, agentB.ID)

require.NoError(t, err)

require.Equal(t, workspaceB.ID, gotB.ID)

appID := uuid.New()

const originalSlug = "code-server"

// Initial insert under workspace A's agent succeeds (no conflict).

app, err := upsertApp(appID, agentA.ID, originalSlug)

require.NoError(t, err)

require.Equal(t, appID, app.ID)

require.Equal(t, agentA.ID, app.AgentID)

require.Equal(t, originalSlug, app.Slug)

// Upserting the same app id onto workspace B's agent is rejected because the

// existing row and the incoming agent resolve to different workspaces. The

// guard updates zero rows, so the :one query returns sql.ErrNoRows.

_, err = upsertApp(appID, agentB.ID, "hijacked")

require.ErrorIs(t, err, sql.ErrNoRows)

// The app remains bound to workspace A's agent, unchanged.

appsA, err := db.GetWorkspaceAppsByAgentID(ctx, agentA.ID)

require.NoError(t, err)

require.Len(t, appsA, 1)

require.Equal(t, appID, appsA[0].ID)

require.Equal(t, agentA.ID, appsA[0].AgentID)

require.Equal(t, originalSlug, appsA[0].Slug)

// Workspace B's agent has no app.

appsB, err := db.GetWorkspaceAppsByAgentID(ctx, agentB.ID)

require.NoError(t, err)

require.Empty(t, appsB)

// A legitimate rebuild of workspace A produces a new agent (agent IDs are

// regenerated every build). Rebinding the persistent app to it succeeds

// because both agents resolve to workspace A.

agentA2 := addAgent(t, workspaceA, versionA, 2)

app, err = upsertApp(appID, agentA2.ID, "code-server-v2")

require.NoError(t, err)

require.Equal(t, agentA2.ID, app.AgentID)

require.Equal(t, "code-server-v2", app.Slug)

appsA2, err := db.GetWorkspaceAppsByAgentID(ctx, agentA2.ID)

require.NoError(t, err)

require.Len(t, appsA2, 1)

require.Equal(t, appID, appsA2[0].ID)

// Set up a template-import agent. It is intentionally not associated with

// a workspace build, so it resolves to no workspace.

importJob := dbgen.ProvisionerJob(t, db, nil, database.ProvisionerJob{

Type: database.ProvisionerJobTypeTemplateVersionImport,

OrganizationID: org.ID,

})

importResource := dbgen.WorkspaceResource(t, db, database.WorkspaceResource{

JobID: importJob.ID,

})

importAgent := dbgen.WorkspaceAgent(t, db, database.WorkspaceAgent{

ResourceID: importResource.ID,

})

_, err = db.GetWorkspaceByAgentID(ctx, importAgent.ID)

require.ErrorIs(t, err, sql.ErrNoRows, "import agent must not resolve to a workspace")

// An app that already belongs to a workspace cannot be rebound to a

// template-import agent. Otherwise a second update could move it from

// the import agent to a different workspace.

_, err = upsertApp(appID, importAgent.ID, "hijacked-by-import")

require.ErrorIs(t, err, sql.ErrNoRows)

appsA2, err = db.GetWorkspaceAppsByAgentID(ctx, agentA2.ID)

require.NoError(t, err)

require.Len(t, appsA2, 1)

require.Equal(t, appID, appsA2[0].ID)

require.Equal(t, agentA2.ID, appsA2[0].AgentID)

require.Equal(t, "code-server-v2", appsA2[0].Slug)

appsImport, err := db.GetWorkspaceAppsByAgentID(ctx, importAgent.ID)

require.NoError(t, err)

require.Empty(t, appsImport)

_, err = upsertApp(appID, agentB.ID, "hijacked-after-import")

require.ErrorIs(t, err, sql.ErrNoRows)

unownedAppID := uuid.New()

_, err = upsertApp(unownedAppID, importAgent.ID, "import-app")

require.NoError(t, err)

// An app whose existing agent belongs to a template-import job resolves to

// no workspace, so rebinding it is permitted. It is not a cross-tenant

// victim.

rebound, err := upsertApp(unownedAppID, agentA.ID, "import-app")

require.NoError(t, err)

require.Equal(t, agentA.ID, rebound.AgentID)

}

func TestGetWorkspaceAgentsByParentID(t *testing.T) {

t.Parallel()