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Code Issues Releases Wiki Activity

Move account passwords to shared infrastructure

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Summary:
Ref T13043. This moves user account passwords to the new shared infrastructure.

There's a lot of code changes here, but essentially all of it is the same as the VCS password logic in D18898.

Test Plan:
- Ran migration.
- Spot checked table for general sanity.
- Logged in with an existing password.
- Hit all error conditions on "change password", "set password", "register new account" flows.
- Verified that changing password logs out other sessions.
- Verified that revoked passwords of a different type can't be selected.
- Changed passwords a bunch.
- Verified that salt regenerates properly after password change.
- Tried to login with the wrong password, which didn't work.

Reviewers: amckinley

Reviewed By: amckinley

Maniphest Tasks: T13043

Differential Revision: https://secure.phabricator.com/D18903
This commit is contained in:
epriestley 2018-01-21 15:42:24 -08:00
parent 6b99aac49d
commit abc030fa00
12 changed files with 203 additions and 199 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
resources/sql/autopatches/20180120.auth.03.vcsdata.sql
View file

@ -1,5 +1,6 @@
INSERT INTO {$NAMESPACE}_auth.auth_password
(objectPHID, phid, passwordType, passwordHash, isRevoked,
dateCreated, dateModified)
SELECT userPHID, '', 'vcs', passwordHash, 0, dateCreated, dateModified
SELECT userPHID, CONCAT('XVCS', id), 'vcs', passwordHash, 0,
dateCreated, dateModified
FROM {$NAMESPACE}_repository.repository_vcspassword;

4
resources/sql/autopatches/20180120.auth.04.vcsphid.php
View file

@ -6,8 +6,10 @@
$table = new PhabricatorAuthPassword();
$conn = $table->establishConnection('w');
$password_type = PhabricatorAuthPasswordPHIDType::TYPECONST;
foreach (new LiskMigrationIterator($table) as $row) {
if ($row->getPHID()) {
if (phid_get_type($row->getPHID()) == $password_type) {
continue;
}

7
resources/sql/autopatches/20180121.auth.03.accountdata.sql Normal file
View file

@ -0,0 +1,7 @@
INSERT INTO {$NAMESPACE}_auth.auth_password
(objectPHID, phid, passwordType, passwordHash, passwordSalt, isRevoked,
dateCreated, dateModified)
SELECT phid, CONCAT('XACCOUNT', id), 'account', passwordHash, passwordSalt, 0,
dateCreated, dateModified
FROM {$NAMESPACE}_user.user
WHERE passwordHash != '';

24
resources/sql/autopatches/20180121.auth.04.accountphid.php Normal file
View file

@ -0,0 +1,24 @@
<?php
// Populate account passwords (which we copied from the user table in the last
// migration) with new PHIDs.
$table = new PhabricatorAuthPassword();
$conn = $table->establishConnection('w');
$password_type = PhabricatorAuthPasswordPHIDType::TYPECONST;
foreach (new LiskMigrationIterator($table) as $row) {
if (phid_get_type($row->getPHID()) == $password_type) {
continue;
}
$new_phid = $row->generatePHID();
queryfx(
$conn,
'UPDATE %T SET phid = %s WHERE id = %d',
$table->getTableName(),
$new_phid,
$row->getID());
}

45
src/applications/auth/controller/PhabricatorAuthRegisterController.php
View file

@ -61,6 +61,9 @@ final class PhabricatorAuthRegisterController
$default_username = $account->getUsername();
$default_realname = $account->getRealName();
$account_type = PhabricatorAuthPassword::PASSWORD_TYPE_ACCOUNT;
$content_source = PhabricatorContentSource::newFromRequest($request);
$default_email = $account->getEmail();
if ($invite) {
@ -285,27 +288,22 @@ final class PhabricatorAuthRegisterController
if ($must_set_password) {
$value_password = $request->getStr('password');
$value_confirm = $request->getStr('confirm');
if (!strlen($value_password)) {
$e_password = pht('Required');
$errors[] = pht('You must choose a password.');
} else if ($value_password !== $value_confirm) {
$e_password = pht('No Match');
$errors[] = pht('Password and confirmation must match.');
} else if (strlen($value_password) < $min_len) {
$e_password = pht('Too Short');
$errors[] = pht(
'Password is too short (must be at least %d characters long).',
$min_len);
} else if (
PhabricatorCommonPasswords::isCommonPassword($value_password)) {
$e_password = pht('Very Weak');
$errors[] = pht(
'Password is pathologically weak. This password is one of the '.
'most common passwords in use, and is extremely easy for '.
'attackers to guess. You must choose a stronger password.');
} else {
$password_envelope = new PhutilOpaqueEnvelope($value_password);
$confirm_envelope = new PhutilOpaqueEnvelope($value_confirm);
$engine = id(new PhabricatorAuthPasswordEngine())
->setViewer($user)
->setContentSource($content_source)
->setPasswordType($account_type)
->setObject($user);
try {
$engine->checkNewPassword($password_envelope, $confirm_envelope);
$e_password = null;
} catch (PhabricatorAuthPasswordException $ex) {
$errors[] = $ex->getMessage();
$e_password = $ex->getPasswordError();
}
}
@ -408,8 +406,13 @@ final class PhabricatorAuthRegisterController
$editor->createNewUser($user, $email_obj, $allow_reassign_email);
if ($must_set_password) {
$envelope = new PhutilOpaqueEnvelope($value_password);
$editor->changePassword($user, $envelope);
$password_object = PhabricatorAuthPassword::initializeNewPassword(
$user,
$account_type);
$password_object
->setPassword($password_envelope, $user)
->save();
}
if ($is_setup) {

78
src/applications/auth/controller/PhabricatorAuthSetPasswordController.php
View file

@ -40,8 +40,30 @@ final class PhabricatorAuthSetPasswordController
return new Aphront404Response();
}
$min_len = PhabricatorEnv::getEnvConfig('account.minimum-password-length');
$min_len = (int)$min_len;
$content_source = PhabricatorContentSource::newFromRequest($request);
$account_type = PhabricatorAuthPassword::PASSWORD_TYPE_ACCOUNT;
$password_objects = id(new PhabricatorAuthPasswordQuery())
->setViewer($viewer)
->withObjectPHIDs(array($viewer->getPHID()))
->withPasswordTypes(array($account_type))
->withIsRevoked(false)
->execute();
if ($password_objects) {
$password_object = head($password_objects);
$has_password = true;
} else {
$password_object = PhabricatorAuthPassword::initializeNewPassword(
$viewer,
$account_type);
$has_password = false;
}
$engine = id(new PhabricatorAuthPasswordEngine())
->setViewer($viewer)
->setContentSource($content_source)
->setPasswordType($account_type)
->setObject($viewer);
$e_password = true;
$e_confirm = true;
@ -50,46 +72,23 @@ final class PhabricatorAuthSetPasswordController
$password = $request->getStr('password');
$confirm = $request->getStr('confirm');
$password_envelope = new PhutilOpaqueEnvelope($password);
$confirm_envelope = new PhutilOpaqueEnvelope($confirm);
try {
$engine->checkNewPassword($password_envelope, $confirm_envelope, true);
$e_password = null;
$e_confirm = null;
if (!strlen($password)) {
$errors[] = pht('You must choose a password or skip this step.');
$e_password = pht('Required');
} else if (strlen($password) < $min_len) {
$errors[] = pht(
'The selected password is too short. Passwords must be a minimum '.
'of %s characters.',
new PhutilNumber($min_len));
$e_password = pht('Too Short');
} else if (!strlen($confirm)) {
$errors[] = pht('You must confirm the selecetd password.');
$e_confirm = pht('Required');
} else if ($password !== $confirm) {
$errors[] = pht('The password and confirmation do not match.');
$e_password = pht('Invalid');
$e_confirm = pht('Invalid');
} else if (PhabricatorCommonPasswords::isCommonPassword($password)) {
$e_password = pht('Very Weak');
$errors[] = pht(
'The selected password is very weak: it is one of the most common '.
'passwords in use. Choose a stronger password.');
} catch (PhabricatorAuthPasswordException $ex) {
$errors[] = $ex->getMessage();
$e_password = $ex->getPasswordError();
$e_confirm = $ex->getConfirmError();
}
if (!$errors) {
$envelope = new PhutilOpaqueEnvelope($password);
// This write is unguarded because the CSRF token has already
// been checked in the call to $request->isFormPost() and
// the CSRF token depends on the password hash, so when it
// is changed here the CSRF token check will fail.
$unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
id(new PhabricatorUserEditor())
->setActor($viewer)
->changePassword($viewer, $envelope);
unset($unguarded);
$password_object
->setPassword($password_envelope, $viewer)
->save();
// Destroy the token.
$auth_token->delete();
@ -98,12 +97,15 @@ final class PhabricatorAuthSetPasswordController
}
}
$min_len = PhabricatorEnv::getEnvConfig('account.minimum-password-length');
$min_len = (int)$min_len;
$len_caption = null;
if ($min_len) {
$len_caption = pht('Minimum password length: %d characters.', $min_len);
}
if ($viewer->hasPassword()) {
if ($has_password) {
$title = pht('Reset Password');
$crumb = pht('Reset Password');
$submit = pht('Reset Password');

7
src/applications/auth/engine/PhabricatorAuthPasswordEngine.php
View file

@ -110,6 +110,12 @@ final class PhabricatorAuthPasswordEngine
pht('Very Weak'));
}
// If we're creating a brand new object (like registering a new user)
// and it does not have a PHID yet, it isn't possible for it to have any
// revoked passwords or colliding passwords either, so we can skip these
// checks.
if ($this->getObject()->getPHID()) {
if ($this->isRevokedPassword($password)) {
throw new PhabricatorAuthPasswordException(
pht(
@ -126,6 +132,7 @@ final class PhabricatorAuthPasswordEngine
pht('Not Unique'));
}
}
}
public function isValidPassword(PhutilOpaqueEnvelope $envelope) {
$this->requireSetup();

23
src/applications/auth/provider/PhabricatorPasswordAuthProvider.php
View file

@ -253,6 +253,7 @@ final class PhabricatorPasswordAuthProvider extends PhabricatorAuthProvider {
$request = $controller->getRequest();
$viewer = $request->getUser();
$content_source = PhabricatorContentSource::newFromRequest($request);
$require_captcha = false;
$captcha_valid = false;
@ -285,22 +286,16 @@ final class PhabricatorPasswordAuthProvider extends PhabricatorAuthProvider {
if ($user) {
$envelope = new PhutilOpaqueEnvelope($request->getStr('password'));
if ($user->comparePassword($envelope)) {
$engine = id(new PhabricatorAuthPasswordEngine())
->setViewer($user)
->setContentSource($content_source)
->setPasswordType(PhabricatorAuthPassword::PASSWORD_TYPE_ACCOUNT)
->setObject($user);
if ($engine->isValidPassword($envelope)) {
$account = $this->loadOrCreateAccount($user->getPHID());
$log_user = $user;
// If the user's password is stored using a less-than-optimal
// hash, upgrade them to the strongest available hash.
$hash_envelope = new PhutilOpaqueEnvelope(
$user->getPasswordHash());
if (PhabricatorPasswordHasher::canUpgradeHash($hash_envelope)) {
$user->setPassword($envelope);
$unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
$user->save();
unset($unguarded);
}
}
}
}

2
src/applications/auth/storage/PhabricatorAuthPassword.php
View file

@ -127,7 +127,7 @@ final class PhabricatorAuthPassword
return PhabricatorPasswordHasher::comparePassword($digest, $hash);
}
private function newPasswordEnvelope() {
public function newPasswordEnvelope() {
return new PhutilOpaqueEnvelope($this->getPasswordHash());
}

27
src/applications/people/editor/PhabricatorUserEditor.php
View file

@ -129,33 +129,6 @@ final class PhabricatorUserEditor extends PhabricatorEditor {
}
/**
* @task edit
*/
public function changePassword(
PhabricatorUser $user,
PhutilOpaqueEnvelope $envelope) {
if (!$user->getID()) {
throw new Exception(pht('User has not been created yet!'));
}
$user->openTransaction();
$user->reload();
$user->setPassword($envelope);
$user->save();
$log = PhabricatorUserLog::initializeNewLog(
$this->requireActor(),
$user->getPHID(),
PhabricatorUserLog::ACTION_CHANGE_PASSWORD);
$log->save();
$user->saveTransaction();
}
/**
* @task edit
*/

78
src/applications/people/storage/PhabricatorUser.php
View file

@ -263,28 +263,6 @@ final class PhabricatorUser
PhabricatorPeopleUserPHIDType::TYPECONST);
}
public function hasPassword() {
return (bool)strlen($this->passwordHash);
}
public function setPassword(PhutilOpaqueEnvelope $envelope) {
if (!$this->getPHID()) {
throw new Exception(
pht(
'You can not set a password for an unsaved user because their PHID '.
'is a salt component in the password hash.'));
}
if (!strlen($envelope->openEnvelope())) {
$this->setPasswordHash('');
} else {
$this->setPasswordSalt(md5(Filesystem::readRandomBytes(32)));
$hash = $this->hashPassword($envelope);
$this->setPasswordHash($hash->openEnvelope());
}
return $this;
}
public function getMonogram() {
return '@'.$this->getUsername();
}
@ -332,36 +310,6 @@ final class PhabricatorUser
return Filesystem::readRandomCharacters(255);
}
public function comparePassword(PhutilOpaqueEnvelope $envelope) {
if (!strlen($envelope->openEnvelope())) {
return false;
}
if (!strlen($this->getPasswordHash())) {
return false;
}
return PhabricatorPasswordHasher::comparePassword(
$this->getPasswordHashInput($envelope),
new PhutilOpaqueEnvelope($this->getPasswordHash()));
}
private function getPasswordHashInput(PhutilOpaqueEnvelope $password) {
$input =
$this->getUsername().
$password->openEnvelope().
$this->getPHID().
$this->getPasswordSalt();
return new PhutilOpaqueEnvelope($input);
}
private function hashPassword(PhutilOpaqueEnvelope $password) {
$hasher = PhabricatorPasswordHasher::getBestHasher();
$input_envelope = $this->getPasswordHashInput($password);
return $hasher->getPasswordHashForStorage($input_envelope);
}
const CSRF_CYCLE_FREQUENCY = 3600;
const CSRF_SALT_LENGTH = 8;
const CSRF_TOKEN_LENGTH = 16;
@ -1669,6 +1617,32 @@ final class PhabricatorUser
$digest = PhabricatorHash::weakDigest($digest, $salt);
}
return new PhutilOpaqueEnvelope($digest);
case PhabricatorAuthPassword::PASSWORD_TYPE_ACCOUNT:
// Account passwords use this weird mess of salt and do not digest
// the input to a standard length.
// TODO: We should build a migration pathway forward from this which
// uses a better (HMAC SHA256) digest algorithm. Beyond this being
// a weird special case, there are two actual problems with this,
// although neither are particularly severe:
// First, because we do not normalize the length of passwords, this
// algorithm may make us vulnerable to DOS attacks where attacker
// attempt to use very long inputs to slow down hashers.
// Second, because the username is part of the hash algorithm, renaming
// a user breaks their password. This isn't a huge deal but it's pretty
// silly. There's no security justification for this behavior, I just
// didn't think about the implication when I wrote it originally.
$parts = array(
$this->getUsername(),
$envelope->openEnvelope(),
$this->getPHID(),
$password->getPasswordSalt(),
);
return new PhutilOpaqueEnvelope(implode('', $parts));
}
// For passwords which do not have some crazy legacy reason to use some

76
src/applications/settings/panel/PhabricatorPasswordSettingsPanel.php
View file

@ -26,6 +26,7 @@ final class PhabricatorPasswordSettingsPanel extends PhabricatorSettingsPanel {
public function processRequest(AphrontRequest $request) {
$user = $request->getUser();
$content_source = PhabricatorContentSource::newFromRequest($request);
$token = id(new PhabricatorAuthSessionEngine())->requireHighSecuritySession(
$user,
@ -40,6 +41,22 @@ final class PhabricatorPasswordSettingsPanel extends PhabricatorSettingsPanel {
// registration or password reset. If this flow changes, that flow may
// also need to change.
$account_type = PhabricatorAuthPassword::PASSWORD_TYPE_ACCOUNT;
$password_objects = id(new PhabricatorAuthPasswordQuery())
->setViewer($user)
->withObjectPHIDs(array($user->getPHID()))
->withPasswordTypes(array($account_type))
->withIsRevoked(false)
->execute();
if ($password_objects) {
$password_object = head($password_objects);
} else {
$password_object = PhabricatorAuthPassword::initializeNewPassword(
$user,
$account_type);
}
$e_old = true;
$e_new = true;
$e_conf = true;
@ -47,41 +64,42 @@ final class PhabricatorPasswordSettingsPanel extends PhabricatorSettingsPanel {
$errors = array();
if ($request->isFormPost()) {
$envelope = new PhutilOpaqueEnvelope($request->getStr('old_pw'));
if (!$user->comparePassword($envelope)) {
$engine = id(new PhabricatorAuthPasswordEngine())
->setViewer($user)
->setContentSource($content_source)
->setPasswordType($account_type)
->setObject($user);
if (!strlen($envelope->openEnvelope())) {
$errors[] = pht('You must enter your current password.');
$e_old = pht('Required');
} else if (!$engine->isValidPassword($envelope)) {
$errors[] = pht('The old password you entered is incorrect.');
$e_old = pht('Invalid');
} else {
$e_old = null;
}
$pass = $request->getStr('new_pw');
$conf = $request->getStr('conf_pw');
$password_envelope = new PhutilOpaqueEnvelope($pass);
$confirm_envelope = new PhutilOpaqueEnvelope($conf);
if (strlen($pass) < $min_len) {
$errors[] = pht('Your new password is too short.');
$e_new = pht('Too Short');
} else if ($pass !== $conf) {
$errors[] = pht('New password and confirmation do not match.');
$e_conf = pht('Invalid');
} else if (PhabricatorCommonPasswords::isCommonPassword($pass)) {
$e_new = pht('Very Weak');
$e_conf = pht('Very Weak');
$errors[] = pht(
'Your new password is very weak: it is one of the most common '.
'passwords in use. Choose a stronger password.');
try {
$engine->checkNewPassword($password_envelope, $confirm_envelope);
$e_new = null;
$e_conf = null;
} catch (PhabricatorAuthPasswordException $ex) {
$errors[] = $ex->getMessage();
$e_new = $ex->getPasswordError();
$e_conf = $ex->getConfirmError();
}
if (!$errors) {
// This write is unguarded because the CSRF token has already
// been checked in the call to $request->isFormPost() and
// the CSRF token depends on the password hash, so when it
// is changed here the CSRF token check will fail.
$unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
$envelope = new PhutilOpaqueEnvelope($pass);
id(new PhabricatorUserEditor())
->setActor($user)
->changePassword($user, $envelope);
unset($unguarded);
$password_object
->setPassword($password_envelope, $user)
->save();
$next = $this->getPanelURI('?saved=true');
@ -93,11 +111,9 @@ final class PhabricatorPasswordSettingsPanel extends PhabricatorSettingsPanel {
}
}
$hash_envelope = new PhutilOpaqueEnvelope($user->getPasswordHash());
if (strlen($hash_envelope->openEnvelope())) {
if ($password_object->getID()) {
try {
$can_upgrade = PhabricatorPasswordHasher::canUpgradeHash(
$hash_envelope);
$can_upgrade = $password_object->canUpgrade();
} catch (PhabricatorPasswordHasherUnavailableException $ex) {
$can_upgrade = false;
@ -154,7 +170,7 @@ final class PhabricatorPasswordSettingsPanel extends PhabricatorSettingsPanel {
$properties->addProperty(
pht('Current Algorithm'),
PhabricatorPasswordHasher::getCurrentAlgorithmName(
new PhutilOpaqueEnvelope($user->getPasswordHash())));
$password_object->newPasswordEnvelope()));
$properties->addProperty(
pht('Best Available Algorithm'),