From 09f2e1e1a26039bbff09348403e99269d907aa28 Mon Sep 17 00:00:00 2001 From: 6543 <6543@obermui.de> Date: Sat, 30 Jul 2022 20:16:25 +0200 Subject: [PATCH] WebAuthn CredentialID field needs to be increased in size (#20530) (#20555) WebAuthn have updated their specification to set the maximum size of the CredentialID to 1023 bytes. This is somewhat larger than our current size and therefore we need to migrate. The PR changes the struct to add CredentialIDBytes and migrates the CredentialID string to the bytes field before another migration drops the old CredentialID field. Another migration renames this field back. Fix #20457 Signed-off-by: Andrew Thornton Co-authored-by: zeripath --- models/auth/webauthn.go | 18 ++- models/auth/webauthn_test.go | 5 +- .../expected_webauthn_credential.yml | 9 ++ .../webauthn_credential.yml | 31 ++++++ models/migrations/migrations.go | 6 + models/migrations/v221.go | 75 +++++++++++++ models/migrations/v221_test.go | 65 +++++++++++ models/migrations/v222.go | 64 +++++++++++ models/migrations/v223.go | 103 ++++++++++++++++++ routers/web/auth/webauthn.go | 3 +- 10 files changed, 363 insertions(+), 16 deletions(-) create mode 100644 models/migrations/fixtures/Test_storeWebauthnCredentialIDAsBytes/expected_webauthn_credential.yml create mode 100644 models/migrations/fixtures/Test_storeWebauthnCredentialIDAsBytes/webauthn_credential.yml create mode 100644 models/migrations/v221.go create mode 100644 models/migrations/v221_test.go create mode 100644 models/migrations/v222.go create mode 100644 models/migrations/v223.go diff --git a/models/auth/webauthn.go b/models/auth/webauthn.go index 2dc304378..d3062342f 100644 --- a/models/auth/webauthn.go +++ b/models/auth/webauthn.go @@ -6,7 +6,6 @@ package auth import ( "context" - "encoding/base32" "fmt" "strings" @@ -20,14 +19,14 @@ import ( // ErrWebAuthnCredentialNotExist represents a "ErrWebAuthnCRedentialNotExist" kind of error. type ErrWebAuthnCredentialNotExist struct { ID int64 - CredentialID string + CredentialID []byte } func (err ErrWebAuthnCredentialNotExist) Error() string { - if err.CredentialID == "" { + if len(err.CredentialID) == 0 { return fmt.Sprintf("WebAuthn credential does not exist [id: %d]", err.ID) } - return fmt.Sprintf("WebAuthn credential does not exist [credential_id: %s]", err.CredentialID) + return fmt.Sprintf("WebAuthn credential does not exist [credential_id: %x]", err.CredentialID) } // IsErrWebAuthnCredentialNotExist checks if an error is a ErrWebAuthnCredentialNotExist. @@ -43,7 +42,7 @@ type WebAuthnCredential struct { Name string LowerName string `xorm:"unique(s)"` UserID int64 `xorm:"INDEX unique(s)"` - CredentialID string `xorm:"INDEX VARCHAR(410)"` + CredentialID []byte `xorm:"INDEX VARBINARY(1024)"` PublicKey []byte AttestationType string AAGUID []byte @@ -94,9 +93,8 @@ type WebAuthnCredentialList []*WebAuthnCredential func (list WebAuthnCredentialList) ToCredentials() []webauthn.Credential { creds := make([]webauthn.Credential, 0, len(list)) for _, cred := range list { - credID, _ := base32.HexEncoding.DecodeString(cred.CredentialID) creds = append(creds, webauthn.Credential{ - ID: credID, + ID: cred.CredentialID, PublicKey: cred.PublicKey, AttestationType: cred.AttestationType, Authenticator: webauthn.Authenticator{ @@ -164,11 +162,11 @@ func HasWebAuthnRegistrationsByUID(uid int64) (bool, error) { } // GetWebAuthnCredentialByCredID returns WebAuthn credential by credential ID -func GetWebAuthnCredentialByCredID(userID int64, credID string) (*WebAuthnCredential, error) { +func GetWebAuthnCredentialByCredID(userID int64, credID []byte) (*WebAuthnCredential, error) { return getWebAuthnCredentialByCredID(db.DefaultContext, userID, credID) } -func getWebAuthnCredentialByCredID(ctx context.Context, userID int64, credID string) (*WebAuthnCredential, error) { +func getWebAuthnCredentialByCredID(ctx context.Context, userID int64, credID []byte) (*WebAuthnCredential, error) { cred := new(WebAuthnCredential) if found, err := db.GetEngine(ctx).Where("user_id = ? AND credential_id = ?", userID, credID).Get(cred); err != nil { return nil, err @@ -187,7 +185,7 @@ func createCredential(ctx context.Context, userID int64, name string, cred *weba c := &WebAuthnCredential{ UserID: userID, Name: name, - CredentialID: base32.HexEncoding.EncodeToString(cred.ID), + CredentialID: cred.ID, PublicKey: cred.PublicKey, AttestationType: cred.AttestationType, AAGUID: cred.Authenticator.AAGUID, diff --git a/models/auth/webauthn_test.go b/models/auth/webauthn_test.go index 216bf1108..cc39691ce 100644 --- a/models/auth/webauthn_test.go +++ b/models/auth/webauthn_test.go @@ -5,7 +5,6 @@ package auth import ( - "encoding/base32" "testing" "code.gitea.io/gitea/models/unittest" @@ -61,9 +60,7 @@ func TestCreateCredential(t *testing.T) { res, err := CreateCredential(1, "WebAuthn Created Credential", &webauthn.Credential{ID: []byte("Test")}) assert.NoError(t, err) assert.Equal(t, "WebAuthn Created Credential", res.Name) - bs, err := base32.HexEncoding.DecodeString(res.CredentialID) - assert.NoError(t, err) - assert.Equal(t, []byte("Test"), bs) + assert.Equal(t, []byte("Test"), res.CredentialID) unittest.AssertExistsIf(t, true, &WebAuthnCredential{Name: "WebAuthn Created Credential", UserID: 1}) } diff --git a/models/migrations/fixtures/Test_storeWebauthnCredentialIDAsBytes/expected_webauthn_credential.yml b/models/migrations/fixtures/Test_storeWebauthnCredentialIDAsBytes/expected_webauthn_credential.yml new file mode 100644 index 000000000..55a237a0d --- /dev/null +++ b/models/migrations/fixtures/Test_storeWebauthnCredentialIDAsBytes/expected_webauthn_credential.yml @@ -0,0 +1,9 @@ +- + id: 1 + credential_id: "TVHE44TOH7DF7V48SEAIT3EMMJ7TGBOQ289E5AQB34S98LFCUFJ7U2NAVI8RJG6K2F4TC8AQ8KBNO7AGEOQOL9NE43GR63HTEHJSLOG=" +- + id: 2 + credential_id: "051CLMMKB62S6M9M2A4H54K7MMCQALFJ36G4TGB2S9A47APLTILU6C6744CEBG4EKCGV357N21BSLH8JD33GQMFAR6DQ70S76P34J6FR=" +- + id: 4 + credential_id: "APU4B1NDTEVTEM60V4T0FRL7SRJMO9KIE2AKFQ8JDGTQ7VHFI41FDEFTDLBVQEAE4ER49QV2GTGVFDNBO31BPOA3OQN6879OT6MTU3G=" diff --git a/models/migrations/fixtures/Test_storeWebauthnCredentialIDAsBytes/webauthn_credential.yml b/models/migrations/fixtures/Test_storeWebauthnCredentialIDAsBytes/webauthn_credential.yml new file mode 100644 index 000000000..c02a76e37 --- /dev/null +++ b/models/migrations/fixtures/Test_storeWebauthnCredentialIDAsBytes/webauthn_credential.yml @@ -0,0 +1,31 @@ +- + id: 1 + lower_name: "u2fkey-correctly-migrated" + name: "u2fkey-correctly-migrated" + user_id: 1 + credential_id: "TVHE44TOH7DF7V48SEAIT3EMMJ7TGBOQ289E5AQB34S98LFCUFJ7U2NAVI8RJG6K2F4TC8AQ8KBNO7AGEOQOL9NE43GR63HTEHJSLOG=" + public_key: 0x040d0967a2cad045011631187576492a0beb5b377954b4f694c5afc8bdf25270f87f09a9ab6ce9c282f447ba71b2f2bae2105b32b847e0704f310f48644e3eddf2 + attestation_type: 'fido-u2f' + sign_count: 1 + clone_warning: false +- + id: 2 + lower_name: "non-u2f-key" + name: "non-u2f-key" + user_id: 1 + credential_id: "051CLMMKB62S6M9M2A4H54K7MMCQALFJ36G4TGB2S9A47APLTILU6C6744CEBG4EKCGV357N21BSLH8JD33GQMFAR6DQ70S76P34J6FR" + public_key: 0x040d0967a2cad045011631187576492a0beb5b377954b4f694c5afc8bdf25270f87f09a9ab6ce9c282f447ba71b2f2bae2105b32b847e0704f310f48644e3eddf2 + attestation_type: 'none' + sign_count: 1 + clone_warning: false +- + id: 4 + lower_name: "packed-key" + name: "packed-key" + user_id: 1 + credential_id: "APU4B1NDTEVTEM60V4T0FRL7SRJMO9KIE2AKFQ8JDGTQ7VHFI41FDEFTDLBVQEAE4ER49QV2GTGVFDNBO31BPOA3OQN6879OT6MTU3G=" + public_key: 0x040d0967a2cad045011631187576492a0beb5b377954b4f694c5afc8bdf25270f87f09a9ab6ce9c282f447ba71b2f2bae2105b32b847e0704f310f48644e3eddf2 + attestation_type: 'fido-u2f' + sign_count: 1 + clone_warning: false + diff --git a/models/migrations/migrations.go b/models/migrations/migrations.go index beeba866d..2719f45ef 100644 --- a/models/migrations/migrations.go +++ b/models/migrations/migrations.go @@ -400,6 +400,12 @@ var migrations = []Migration{ NewMigration("Add sync_on_commit column to push_mirror table", addSyncOnCommitColForPushMirror), // v220 -> v221 NewMigration("Add container repository property", addContainerRepositoryProperty), + // v221 -> v222 + NewMigration("Store WebAuthentication CredentialID as bytes and increase size to at least 1024", storeWebauthnCredentialIDAsBytes), + // v222 -> v223 + NewMigration("Drop old CredentialID column", dropOldCredentialIDColumn), + // v223 -> v224 + NewMigration("Rename CredentialIDBytes column to CredentialID", renameCredentialIDBytes), } // GetCurrentDBVersion returns the current db version diff --git a/models/migrations/v221.go b/models/migrations/v221.go new file mode 100644 index 000000000..f3bcfcdf1 --- /dev/null +++ b/models/migrations/v221.go @@ -0,0 +1,75 @@ +// Copyright 2022 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 ( + "encoding/base32" + "fmt" + + "code.gitea.io/gitea/modules/timeutil" + + "xorm.io/xorm" +) + +func storeWebauthnCredentialIDAsBytes(x *xorm.Engine) error { + // Create webauthnCredential table + type webauthnCredential struct { + ID int64 `xorm:"pk autoincr"` + Name string + LowerName string `xorm:"unique(s)"` + UserID int64 `xorm:"INDEX unique(s)"` + CredentialID string `xorm:"INDEX VARCHAR(410)"` + // Note the lack of INDEX here - these will be created once the column is renamed in v223.go + CredentialIDBytes []byte `xorm:"VARBINARY(1024)"` // CredentialID is at most 1023 bytes as per spec released 20 July 2022 + PublicKey []byte + AttestationType string + AAGUID []byte + SignCount uint32 `xorm:"BIGINT"` + CloneWarning bool + CreatedUnix timeutil.TimeStamp `xorm:"INDEX created"` + UpdatedUnix timeutil.TimeStamp `xorm:"INDEX updated"` + } + if err := x.Sync2(&webauthnCredential{}); err != nil { + return err + } + + var start int + creds := make([]*webauthnCredential, 0, 50) + for { + err := x.Select("id, credential_id").OrderBy("id").Limit(50, start).Find(&creds) + if err != nil { + return err + } + + err = func() error { + sess := x.NewSession() + defer sess.Close() + if err := sess.Begin(); err != nil { + return fmt.Errorf("unable to allow start session. Error: %w", err) + } + for _, cred := range creds { + cred.CredentialIDBytes, err = base32.HexEncoding.DecodeString(cred.CredentialID) + if err != nil { + return fmt.Errorf("unable to parse credential id %s for credential[%d]: %w", cred.CredentialID, cred.ID, err) + } + count, err := sess.ID(cred.ID).Cols("credential_id_bytes").Update(cred) + if count != 1 || err != nil { + return fmt.Errorf("unable to update credential id bytes for credential[%d]: %d,%w", cred.ID, count, err) + } + } + return sess.Commit() + }() + if err != nil { + return err + } + + if len(creds) < 50 { + break + } + start += 50 + creds = creds[:0] + } + return nil +} diff --git a/models/migrations/v221_test.go b/models/migrations/v221_test.go new file mode 100644 index 000000000..c50ca5c87 --- /dev/null +++ b/models/migrations/v221_test.go @@ -0,0 +1,65 @@ +// Copyright 2022 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 ( + "encoding/base32" + "testing" + + "github.com/stretchr/testify/assert" +) + +func Test_storeWebauthnCredentialIDAsBytes(t *testing.T) { + // Create webauthnCredential table + type WebauthnCredential struct { + ID int64 `xorm:"pk autoincr"` + Name string + LowerName string `xorm:"unique(s)"` + UserID int64 `xorm:"INDEX unique(s)"` + CredentialID string `xorm:"INDEX VARCHAR(410)"` + PublicKey []byte + AttestationType string + AAGUID []byte + SignCount uint32 `xorm:"BIGINT"` + CloneWarning bool + } + + type ExpectedWebauthnCredential struct { + ID int64 `xorm:"pk autoincr"` + CredentialID string // CredentialID is at most 1023 bytes as per spec released 20 July 2022 + } + + type ConvertedWebauthnCredential struct { + ID int64 `xorm:"pk autoincr"` + CredentialIDBytes []byte `xorm:"VARBINARY(1024)"` // CredentialID is at most 1023 bytes as per spec released 20 July 2022 + } + + // Prepare and load the testing database + x, deferable := prepareTestEnv(t, 0, new(WebauthnCredential), new(ExpectedWebauthnCredential)) + defer deferable() + if x == nil || t.Failed() { + return + } + + if err := storeWebauthnCredentialIDAsBytes(x); err != nil { + assert.NoError(t, err) + return + } + + expected := []ExpectedWebauthnCredential{} + if err := x.Table("expected_webauthn_credential").Asc("id").Find(&expected); !assert.NoError(t, err) { + return + } + + got := []ConvertedWebauthnCredential{} + if err := x.Table("webauthn_credential").Select("id, credential_id_bytes").Asc("id").Find(&got); !assert.NoError(t, err) { + return + } + + for i, e := range expected { + credIDBytes, _ := base32.HexEncoding.DecodeString(e.CredentialID) + assert.Equal(t, credIDBytes, got[i].CredentialIDBytes) + } +} diff --git a/models/migrations/v222.go b/models/migrations/v222.go new file mode 100644 index 000000000..99acdfd20 --- /dev/null +++ b/models/migrations/v222.go @@ -0,0 +1,64 @@ +// Copyright 2022 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 ( + "context" + "fmt" + + "code.gitea.io/gitea/modules/timeutil" + + "xorm.io/xorm" +) + +func dropOldCredentialIDColumn(x *xorm.Engine) error { + // This migration maybe rerun so that we should check if it has been run + credentialIDExist, err := x.Dialect().IsColumnExist(x.DB(), context.Background(), "webauthn_credential", "credential_id") + if err != nil { + return err + } + if !credentialIDExist { + // Column is already non-extant + return nil + } + credentialIDBytesExists, err := x.Dialect().IsColumnExist(x.DB(), context.Background(), "webauthn_credential", "credential_id_bytes") + if err != nil { + return err + } + if !credentialIDBytesExists { + // looks like 221 hasn't properly run + return fmt.Errorf("webauthn_credential does not have a credential_id_bytes column... it is not safe to run this migration") + } + + // Create webauthnCredential table + type webauthnCredential struct { + ID int64 `xorm:"pk autoincr"` + Name string + LowerName string `xorm:"unique(s)"` + UserID int64 `xorm:"INDEX unique(s)"` + CredentialID string `xorm:"INDEX VARCHAR(410)"` + // Note the lack of the INDEX on CredentialIDBytes - we will add this in v223.go + CredentialIDBytes []byte `xorm:"VARBINARY(1024)"` // CredentialID is at most 1023 bytes as per spec released 20 July 2022 + PublicKey []byte + AttestationType string + AAGUID []byte + SignCount uint32 `xorm:"BIGINT"` + CloneWarning bool + CreatedUnix timeutil.TimeStamp `xorm:"INDEX created"` + UpdatedUnix timeutil.TimeStamp `xorm:"INDEX updated"` + } + if err := x.Sync2(&webauthnCredential{}); err != nil { + return err + } + + // Drop the old credential ID + sess := x.NewSession() + defer sess.Close() + + if err := dropTableColumns(sess, "webauthn_credential", "credential_id"); err != nil { + return fmt.Errorf("unable to drop old credentialID column: %w", err) + } + return sess.Commit() +} diff --git a/models/migrations/v223.go b/models/migrations/v223.go new file mode 100644 index 000000000..d7ee4812b --- /dev/null +++ b/models/migrations/v223.go @@ -0,0 +1,103 @@ +// Copyright 2022 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 ( + "context" + "fmt" + + "code.gitea.io/gitea/modules/setting" + "code.gitea.io/gitea/modules/timeutil" + + "xorm.io/xorm" +) + +func renameCredentialIDBytes(x *xorm.Engine) error { + // This migration maybe rerun so that we should check if it has been run + credentialIDExist, err := x.Dialect().IsColumnExist(x.DB(), context.Background(), "webauthn_credential", "credential_id") + if err != nil { + return err + } + if credentialIDExist { + credentialIDBytesExists, err := x.Dialect().IsColumnExist(x.DB(), context.Background(), "webauthn_credential", "credential_id_bytes") + if err != nil { + return err + } + if !credentialIDBytesExists { + return nil + } + } + + err = func() error { + // webauthnCredential table + type webauthnCredential struct { + ID int64 `xorm:"pk autoincr"` + Name string + LowerName string `xorm:"unique(s)"` + UserID int64 `xorm:"INDEX unique(s)"` + // Note the lack of INDEX here + CredentialIDBytes []byte `xorm:"VARBINARY(1024)"` // CredentialID is at most 1023 bytes as per spec released 20 July 2022 + PublicKey []byte + AttestationType string + AAGUID []byte + SignCount uint32 `xorm:"BIGINT"` + CloneWarning bool + CreatedUnix timeutil.TimeStamp `xorm:"INDEX created"` + UpdatedUnix timeutil.TimeStamp `xorm:"INDEX updated"` + } + sess := x.NewSession() + defer sess.Close() + if err := sess.Begin(); err != nil { + return err + } + + if err := sess.Sync2(new(webauthnCredential)); err != nil { + return fmt.Errorf("error on Sync2: %v", err) + } + + if credentialIDExist { + // if both errors and message exist, drop message at first + if err := dropTableColumns(sess, "webauthn_credential", "credential_id"); err != nil { + return err + } + } + + switch { + case setting.Database.UseMySQL: + if _, err := sess.Exec("ALTER TABLE `webauthn_credential` CHANGE credential_id_bytes credential_id VARBINARY(1024)"); err != nil { + return err + } + case setting.Database.UseMSSQL: + if _, err := sess.Exec("sp_rename 'webauthn_credential.credential_id_bytes', 'credential_id', 'COLUMN'"); err != nil { + return err + } + default: + if _, err := sess.Exec("ALTER TABLE `webauthn_credential` RENAME COLUMN credential_id_bytes TO credential_id"); err != nil { + return err + } + } + return sess.Commit() + }() + if err != nil { + return err + } + + // Create webauthnCredential table + type webauthnCredential struct { + ID int64 `xorm:"pk autoincr"` + Name string + LowerName string `xorm:"unique(s)"` + UserID int64 `xorm:"INDEX unique(s)"` + CredentialID []byte `xorm:"INDEX VARBINARY(1024)"` // CredentialID is at most 1023 bytes as per spec released 20 July 2022 + PublicKey []byte + AttestationType string + AAGUID []byte + SignCount uint32 `xorm:"BIGINT"` + CloneWarning bool + CreatedUnix timeutil.TimeStamp `xorm:"INDEX created"` + UpdatedUnix timeutil.TimeStamp `xorm:"INDEX updated"` + } + return x.Sync2(&webauthnCredential{}) +} diff --git a/routers/web/auth/webauthn.go b/routers/web/auth/webauthn.go index c0cf58f3d..c5e308c66 100644 --- a/routers/web/auth/webauthn.go +++ b/routers/web/auth/webauthn.go @@ -5,7 +5,6 @@ package auth import ( - "encoding/base32" "errors" "net/http" @@ -132,7 +131,7 @@ func WebAuthnLoginAssertionPost(ctx *context.Context) { } // Success! Get the credential and update the sign count with the new value we received. - dbCred, err := auth.GetWebAuthnCredentialByCredID(user.ID, base32.HexEncoding.EncodeToString(cred.ID)) + dbCred, err := auth.GetWebAuthnCredentialByCredID(user.ID, cred.ID) if err != nil { ctx.ServerError("GetWebAuthnCredentialByCredID", err) return