Encrypt migration credentials at rest (#15895)

* encrypt migration credentials in task persistence

Not sure this is the best approach, we could encrypt the entire
`PayloadContent` instead. Also instead of clearing individual fields in
payload content, we could just delete the task once it has
(successfully) finished..?

* remove credentials of past migrations

* only run DB migration for completed tasks

* fix binding

* add omitempty

* never serialize unencrypted credentials

* fix import order

Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
This commit is contained in:
Norwin 2021-05-31 08:25:47 +00:00 committed by GitHub
parent 256b1a3561
commit cb940c4312
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
5 changed files with 145 additions and 5 deletions

View file

@ -309,6 +309,8 @@ var migrations = []Migration{
NewMigration("Add LFS columns to Mirror", addLFSMirrorColumns),
// v179 -> v180
NewMigration("Convert avatar url to text", convertAvatarURLToText),
// v180 -> v181
NewMigration("Delete credentials from past migrations", deleteMigrationCredentials),
}
// GetCurrentDBVersion returns the current db version

74
models/migrations/v180.go Normal file
View file

@ -0,0 +1,74 @@
// Copyright 2021 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package migrations
import (
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/migrations/base"
"code.gitea.io/gitea/modules/structs"
"code.gitea.io/gitea/modules/util"
jsoniter "github.com/json-iterator/go"
"xorm.io/builder"
"xorm.io/xorm"
)
func deleteMigrationCredentials(x *xorm.Engine) (err error) {
const batchSize = 100
// only match migration tasks, that are not pending or running
cond := builder.Eq{
"type": structs.TaskTypeMigrateRepo,
}.And(builder.Gte{
"status": structs.TaskStatusStopped,
})
sess := x.NewSession()
defer sess.Close()
for start := 0; ; start += batchSize {
tasks := make([]*models.Task, 0, batchSize)
if err = sess.Limit(batchSize, start).Where(cond, 0).Find(&tasks); err != nil {
return
}
if len(tasks) == 0 {
break
}
if err = sess.Begin(); err != nil {
return
}
for _, t := range tasks {
if t.PayloadContent, err = removeCredentials(t.PayloadContent); err != nil {
return
}
if _, err = sess.ID(t.ID).Cols("payload_content").Update(t); err != nil {
return
}
}
if err = sess.Commit(); err != nil {
return
}
}
return
}
func removeCredentials(payload string) (string, error) {
var opts base.MigrateOptions
json := jsoniter.ConfigCompatibleWithStandardLibrary
err := json.Unmarshal([]byte(payload), &opts)
if err != nil {
return "", err
}
opts.AuthPassword = ""
opts.AuthToken = ""
opts.CloneAddr = util.SanitizeURLCredentials(opts.CloneAddr, true)
confBytes, err := json.Marshal(opts)
if err != nil {
return "", err
}
return string(confBytes), nil
}

View file

@ -8,8 +8,11 @@ import (
"fmt"
migration "code.gitea.io/gitea/modules/migrations/base"
"code.gitea.io/gitea/modules/secret"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/structs"
"code.gitea.io/gitea/modules/timeutil"
"code.gitea.io/gitea/modules/util"
jsoniter "github.com/json-iterator/go"
"xorm.io/builder"
@ -110,6 +113,24 @@ func (task *Task) MigrateConfig() (*migration.MigrateOptions, error) {
if err != nil {
return nil, err
}
// decrypt credentials
if opts.CloneAddrEncrypted != "" {
if opts.CloneAddr, err = secret.DecryptSecret(setting.SecretKey, opts.CloneAddrEncrypted); err != nil {
return nil, err
}
}
if opts.AuthPasswordEncrypted != "" {
if opts.AuthPassword, err = secret.DecryptSecret(setting.SecretKey, opts.AuthPasswordEncrypted); err != nil {
return nil, err
}
}
if opts.AuthTokenEncrypted != "" {
if opts.AuthToken, err = secret.DecryptSecret(setting.SecretKey, opts.AuthTokenEncrypted); err != nil {
return nil, err
}
}
return &opts, nil
}
return nil, fmt.Errorf("Task type is %s, not Migrate Repo", task.Type.Name())
@ -205,12 +226,31 @@ func createTask(e Engine, task *Task) error {
func FinishMigrateTask(task *Task) error {
task.Status = structs.TaskStatusFinished
task.EndTime = timeutil.TimeStampNow()
// delete credentials when we're done, they're a liability.
conf, err := task.MigrateConfig()
if err != nil {
return err
}
conf.AuthPassword = ""
conf.AuthToken = ""
conf.CloneAddr = util.SanitizeURLCredentials(conf.CloneAddr, true)
conf.AuthPasswordEncrypted = ""
conf.AuthTokenEncrypted = ""
conf.CloneAddrEncrypted = ""
json := jsoniter.ConfigCompatibleWithStandardLibrary
confBytes, err := json.Marshal(conf)
if err != nil {
return err
}
task.PayloadContent = string(confBytes)
sess := x.NewSession()
defer sess.Close()
if err := sess.Begin(); err != nil {
return err
}
if _, err := sess.ID(task.ID).Cols("status", "end_time").Update(task); err != nil {
if _, err := sess.ID(task.ID).Cols("status", "end_time", "payload_content").Update(task); err != nil {
return err
}

View file

@ -11,10 +11,13 @@ import "code.gitea.io/gitea/modules/structs"
// this is for internal usage by migrations module and func who interact with it
type MigrateOptions struct {
// required: true
CloneAddr string `json:"clone_addr" binding:"Required"`
AuthUsername string `json:"auth_username"`
AuthPassword string `json:"auth_password"`
AuthToken string `json:"auth_token"`
CloneAddr string `json:"clone_addr" binding:"Required"`
CloneAddrEncrypted string `json:"clone_addr_encrypted,omitempty"`
AuthUsername string `json:"auth_username"`
AuthPassword string `json:"-"`
AuthPasswordEncrypted string `json:"auth_password_encrypted,omitempty"`
AuthToken string `json:"-"`
AuthTokenEncrypted string `json:"auth_token_encrypted,omitempty"`
// required: true
UID int `json:"uid" binding:"Required"`
// required: true

View file

@ -13,8 +13,11 @@ import (
"code.gitea.io/gitea/modules/migrations/base"
"code.gitea.io/gitea/modules/queue"
repo_module "code.gitea.io/gitea/modules/repository"
"code.gitea.io/gitea/modules/secret"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/structs"
"code.gitea.io/gitea/modules/timeutil"
"code.gitea.io/gitea/modules/util"
jsoniter "github.com/json-iterator/go"
)
@ -65,6 +68,24 @@ func MigrateRepository(doer, u *models.User, opts base.MigrateOptions) error {
// CreateMigrateTask creates a migrate task
func CreateMigrateTask(doer, u *models.User, opts base.MigrateOptions) (*models.Task, error) {
// encrypt credentials for persistence
var err error
opts.CloneAddrEncrypted, err = secret.EncryptSecret(setting.SecretKey, opts.CloneAddr)
if err != nil {
return nil, err
}
opts.CloneAddr = util.SanitizeURLCredentials(opts.CloneAddr, true)
opts.AuthPasswordEncrypted, err = secret.EncryptSecret(setting.SecretKey, opts.AuthPassword)
if err != nil {
return nil, err
}
opts.AuthPassword = ""
opts.AuthTokenEncrypted, err = secret.EncryptSecret(setting.SecretKey, opts.AuthToken)
if err != nil {
return nil, err
}
opts.AuthToken = ""
json := jsoniter.ConfigCompatibleWithStandardLibrary
bs, err := json.Marshal(&opts)
if err != nil {