18.1: April ASB picks

1 extra patch

Signed-off-by: Tavi <tavi@divested.dev>
This commit is contained in:
Tavi 2024-04-09 16:29:35 -04:00
parent 4f8cfc8a41
commit 3f430b038e
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4 changed files with 1 additions and 464 deletions

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@ -1,117 +0,0 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Beverly <beverlyt@google.com>
Date: Thu, 18 Jan 2024 20:13:52 +0000
Subject: [PATCH] isUserInLockDown can be true when there are other strong auth
requirements
Bug: 315206668
Bug: 218495634
Flag: None
Test: manual, atest LockPatternUtilsTest
(cherry picked from commit d341f1ecdb011d24b17358f115391b3f997cb179)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:ce7ca2d9f405c94062504411c886eff93bd7ce15)
Merged-In: I5e979a7822dd7254b4579ab28ecf96df1db44179
Change-Id: I5e979a7822dd7254b4579ab28ecf96df1db44179
---
.../internal/widget/LockPatternUtils.java | 4 +-
.../internal/util/LockPatternUtilsTest.java | 41 ++++++++++++++++---
2 files changed, 38 insertions(+), 7 deletions(-)
diff --git a/core/java/com/android/internal/widget/LockPatternUtils.java b/core/java/com/android/internal/widget/LockPatternUtils.java
index e0a2803ea60b..d0e82ec29c80 100644
--- a/core/java/com/android/internal/widget/LockPatternUtils.java
+++ b/core/java/com/android/internal/widget/LockPatternUtils.java
@@ -1484,8 +1484,8 @@ public class LockPatternUtils {
}
public boolean isUserInLockdown(int userId) {
- return getStrongAuthForUser(userId)
- == StrongAuthTracker.STRONG_AUTH_REQUIRED_AFTER_USER_LOCKDOWN;
+ return (getStrongAuthForUser(userId)
+ & StrongAuthTracker.STRONG_AUTH_REQUIRED_AFTER_USER_LOCKDOWN) != 0;
}
private static class WrappedCallback extends ICheckCredentialProgressCallback.Stub {
diff --git a/core/tests/utiltests/src/com/android/internal/util/LockPatternUtilsTest.java b/core/tests/utiltests/src/com/android/internal/util/LockPatternUtilsTest.java
index 50e8474e8d52..01494a7659a5 100644
--- a/core/tests/utiltests/src/com/android/internal/util/LockPatternUtilsTest.java
+++ b/core/tests/utiltests/src/com/android/internal/util/LockPatternUtilsTest.java
@@ -19,6 +19,10 @@ package com.android.internal.util;
import static android.app.admin.DevicePolicyManager.PASSWORD_QUALITY_MANAGED;
import static android.app.admin.DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED;
+import static com.android.internal.widget.LockPatternUtils.StrongAuthTracker.STRONG_AUTH_NOT_REQUIRED;
+import static com.android.internal.widget.LockPatternUtils.StrongAuthTracker.STRONG_AUTH_REQUIRED_AFTER_LOCKOUT;
+import static com.android.internal.widget.LockPatternUtils.StrongAuthTracker.STRONG_AUTH_REQUIRED_AFTER_USER_LOCKDOWN;
+
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.doReturn;
@@ -48,12 +52,15 @@ import org.mockito.Mockito;
@SmallTest
public class LockPatternUtilsTest {
+ private ILockSettings mLockSettings;
+ private static final int USER_ID = 1;
private static final int DEMO_USER_ID = 5;
private LockPatternUtils mLockPatternUtils;
private void configureTest(boolean isSecure, boolean isDemoUser, int deviceDemoMode)
throws Exception {
+ mLockSettings = Mockito.mock(ILockSettings.class);
final Context context = spy(new ContextWrapper(InstrumentationRegistry.getTargetContext()));
final MockContentResolver cr = new MockContentResolver(context);
@@ -61,15 +68,14 @@ public class LockPatternUtilsTest {
when(context.getContentResolver()).thenReturn(cr);
Settings.Global.putInt(cr, Settings.Global.DEVICE_DEMO_MODE, deviceDemoMode);
- final ILockSettings ils = Mockito.mock(ILockSettings.class);
- when(ils.getCredentialType(DEMO_USER_ID)).thenReturn(
+ when(mLockSettings.getCredentialType(DEMO_USER_ID)).thenReturn(
isSecure ? LockPatternUtils.CREDENTIAL_TYPE_PASSWORD
: LockPatternUtils.CREDENTIAL_TYPE_NONE);
- when(ils.getLong("lockscreen.password_type", PASSWORD_QUALITY_UNSPECIFIED, DEMO_USER_ID))
- .thenReturn((long) PASSWORD_QUALITY_MANAGED);
+ when(mLockSettings.getLong("lockscreen.password_type", PASSWORD_QUALITY_UNSPECIFIED,
+ DEMO_USER_ID)).thenReturn((long) PASSWORD_QUALITY_MANAGED);
// TODO(b/63758238): stop spying the class under test
mLockPatternUtils = spy(new LockPatternUtils(context));
- when(mLockPatternUtils.getLockSettings()).thenReturn(ils);
+ when(mLockPatternUtils.getLockSettings()).thenReturn(mLockSettings);
doReturn(true).when(mLockPatternUtils).hasSecureLockScreen();
final UserInfo userInfo = Mockito.mock(UserInfo.class);
@@ -79,6 +85,31 @@ public class LockPatternUtilsTest {
when(context.getSystemService(Context.USER_SERVICE)).thenReturn(um);
}
+ @Test
+ public void isUserInLockDown() throws Exception {
+ configureTest(true, false, 2);
+
+ // GIVEN strong auth not required
+ when(mLockSettings.getStrongAuthForUser(USER_ID)).thenReturn(STRONG_AUTH_NOT_REQUIRED);
+
+ // THEN user isn't in lockdown
+ assertFalse(mLockPatternUtils.isUserInLockdown(USER_ID));
+
+ // GIVEN lockdown
+ when(mLockSettings.getStrongAuthForUser(USER_ID)).thenReturn(
+ STRONG_AUTH_REQUIRED_AFTER_USER_LOCKDOWN);
+
+ // THEN user is in lockdown
+ assertTrue(mLockPatternUtils.isUserInLockdown(USER_ID));
+
+ // GIVEN lockdown and lockout
+ when(mLockSettings.getStrongAuthForUser(USER_ID)).thenReturn(
+ STRONG_AUTH_REQUIRED_AFTER_USER_LOCKDOWN | STRONG_AUTH_REQUIRED_AFTER_LOCKOUT);
+
+ // THEN user is in lockdown
+ assertTrue(mLockPatternUtils.isUserInLockdown(USER_ID));
+ }
+
@Test
public void isLockScreenDisabled_isDemoUser_true() throws Exception {
configureTest(false, true, 2);

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@ -1,345 +0,0 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Tetiana Meronyk <tetianameronyk@google.com>
Date: Wed, 10 Jan 2024 16:25:13 +0000
Subject: [PATCH] Fix security vulnerability that creates user with no
restrictions when accountOptions are too long.
Bug: 293602970
Test: atest UserManagerTest#testAddUserAccountData_validStringValuesAreSaved_validBundleIsSaved && atest UserManagerTest#testAddUserAccountData_invalidStringValuesAreTruncated_invalidBundleIsDropped
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:944ea959ab8464c39a8f6a4fc391fb6953e1df89)
Merged-In: I23c971f671546ac085060add89485cfac6691ca3
Change-Id: I23c971f671546ac085060add89485cfac6691ca3
---
core/java/android/os/PersistableBundle.java | 37 +++++++
core/java/android/os/UserManager.java | 23 +++-
.../app/ConfirmUserCreationActivity.java | 12 +++
.../android/server/pm/UserManagerService.java | 29 ++---
.../android/server/pm/UserManagerTest.java | 102 ++++++++++++++++++
5 files changed, 187 insertions(+), 16 deletions(-)
diff --git a/core/java/android/os/PersistableBundle.java b/core/java/android/os/PersistableBundle.java
index 7c7e2137aa17..b2adb5eb434c 100644
--- a/core/java/android/os/PersistableBundle.java
+++ b/core/java/android/os/PersistableBundle.java
@@ -275,6 +275,43 @@ public final class PersistableBundle extends BaseBundle implements Cloneable, Pa
XmlUtils.writeMapXml(mMap, out, this);
}
+ /**
+ * Checks whether all keys and values are within the given character limit.
+ * Note: Maximum character limit of String that can be saved to XML as part of bundle is 65535.
+ * Otherwise IOException is thrown.
+ * @param limit length of String keys and values in the PersistableBundle, including nested
+ * PersistableBundles to check against.
+ *
+ * @hide
+ */
+ public boolean isBundleContentsWithinLengthLimit(int limit) {
+ unparcel();
+ if (mMap == null) {
+ return true;
+ }
+ for (int i = 0; i < mMap.size(); i++) {
+ if (mMap.keyAt(i) != null && mMap.keyAt(i).length() > limit) {
+ return false;
+ }
+ final Object value = mMap.valueAt(i);
+ if (value instanceof String && ((String) value).length() > limit) {
+ return false;
+ } else if (value instanceof String[]) {
+ String[] stringArray = (String[]) value;
+ for (int j = 0; j < stringArray.length; j++) {
+ if (stringArray[j] != null
+ && stringArray[j].length() > limit) {
+ return false;
+ }
+ }
+ } else if (value instanceof PersistableBundle
+ && !((PersistableBundle) value).isBundleContentsWithinLengthLimit(limit)) {
+ return false;
+ }
+ }
+ return true;
+ }
+
/** @hide */
static class MyReadMapCallback implements XmlUtils.ReadMapCallback {
@Override
diff --git a/core/java/android/os/UserManager.java b/core/java/android/os/UserManager.java
index 2465b0e41876..9606ce97a3b0 100644
--- a/core/java/android/os/UserManager.java
+++ b/core/java/android/os/UserManager.java
@@ -91,6 +91,21 @@ public class UserManager {
private Boolean mIsManagedProfileCached;
private Boolean mIsProfileCached;
+ /** Maximum length of username.
+ * @hide
+ */
+ public static final int MAX_USER_NAME_LENGTH = 100;
+
+ /** Maximum length of user property String value.
+ * @hide
+ */
+ public static final int MAX_ACCOUNT_STRING_LENGTH = 500;
+
+ /** Maximum length of account options String values.
+ * @hide
+ */
+ public static final int MAX_ACCOUNT_OPTIONS_LENGTH = 1000;
+
/**
* User type representing a {@link UserHandle#USER_SYSTEM system} user that is a human user.
* This type of user cannot be created; it can only pre-exist on first boot.
@@ -2974,15 +2989,15 @@ public class UserManager {
* time, the preferred user name and account information are used by the setup process for that
* user.
*
- * @param userName Optional name to assign to the user.
+ * @param userName Optional name to assign to the user. Character limit is 100.
* @param accountName Optional account name that will be used by the setup wizard to initialize
- * the user.
+ * the user. Character limit is 500.
* @param accountType Optional account type for the account to be created. This is required
- * if the account name is specified.
+ * if the account name is specified. Character limit is 500.
* @param accountOptions Optional bundle of data to be passed in during account creation in the
* new user via {@link AccountManager#addAccount(String, String, String[],
* Bundle, android.app.Activity, android.accounts.AccountManagerCallback,
- * Handler)}.
+ * Handler)}. Character limit is 1000.
* @return An Intent that can be launched from an Activity.
* @see #USER_CREATION_FAILED_NOT_PERMITTED
* @see #USER_CREATION_FAILED_NO_MORE_USERS
diff --git a/core/java/com/android/internal/app/ConfirmUserCreationActivity.java b/core/java/com/android/internal/app/ConfirmUserCreationActivity.java
index 03da9bc939ec..74dedc38a922 100644
--- a/core/java/com/android/internal/app/ConfirmUserCreationActivity.java
+++ b/core/java/com/android/internal/app/ConfirmUserCreationActivity.java
@@ -110,6 +110,14 @@ public class ConfirmUserCreationActivity extends AlertActivity
if (cantCreateUser) {
setResult(UserManager.USER_CREATION_FAILED_NOT_PERMITTED);
return null;
+ } else if (!(isUserPropertyWithinLimit(mUserName, UserManager.MAX_USER_NAME_LENGTH)
+ && isUserPropertyWithinLimit(mAccountName, UserManager.MAX_ACCOUNT_STRING_LENGTH)
+ && isUserPropertyWithinLimit(mAccountType, UserManager.MAX_ACCOUNT_STRING_LENGTH))
+ || (mAccountOptions != null && !mAccountOptions.isBundleContentsWithinLengthLimit(
+ UserManager.MAX_ACCOUNT_OPTIONS_LENGTH))) {
+ setResult(UserManager.USER_CREATION_FAILED_NOT_PERMITTED);
+ Log.i(TAG, "User properties must not exceed their character limits");
+ return null;
} else if (cantCreateAnyMoreUsers) {
setResult(UserManager.USER_CREATION_FAILED_NO_MORE_USERS);
return null;
@@ -137,4 +145,8 @@ public class ConfirmUserCreationActivity extends AlertActivity
}
finish();
}
+
+ private boolean isUserPropertyWithinLimit(String property, int limit) {
+ return property == null || property.length() <= limit;
+ }
}
diff --git a/services/core/java/com/android/server/pm/UserManagerService.java b/services/core/java/com/android/server/pm/UserManagerService.java
index 4a9d6f6ef5ff..88c4223d0925 100644
--- a/services/core/java/com/android/server/pm/UserManagerService.java
+++ b/services/core/java/com/android/server/pm/UserManagerService.java
@@ -240,8 +240,6 @@ public class UserManagerService extends IUserManager.Stub {
private static final int USER_VERSION = 9;
- private static final int MAX_USER_STRING_LENGTH = 500;
-
private static final long EPOCH_PLUS_30_YEARS = 30L * 365 * 24 * 60 * 60 * 1000L; // ms
static final int WRITE_USER_MSG = 1;
@@ -2938,16 +2936,18 @@ public class UserManagerService extends IUserManager.Stub {
if (userData.persistSeedData) {
if (userData.seedAccountName != null) {
serializer.attribute(null, ATTR_SEED_ACCOUNT_NAME,
- truncateString(userData.seedAccountName));
+ truncateString(userData.seedAccountName,
+ UserManager.MAX_ACCOUNT_STRING_LENGTH));
}
if (userData.seedAccountType != null) {
serializer.attribute(null, ATTR_SEED_ACCOUNT_TYPE,
- truncateString(userData.seedAccountType));
+ truncateString(userData.seedAccountType,
+ UserManager.MAX_ACCOUNT_STRING_LENGTH));
}
}
if (userInfo.name != null) {
serializer.startTag(null, TAG_NAME);
- serializer.text(truncateString(userInfo.name));
+ serializer.text(truncateString(userInfo.name, UserManager.MAX_USER_NAME_LENGTH));
serializer.endTag(null, TAG_NAME);
}
synchronized (mRestrictionsLock) {
@@ -2987,11 +2987,11 @@ public class UserManagerService extends IUserManager.Stub {
serializer.endDocument();
}
- private String truncateString(String original) {
- if (original == null || original.length() <= MAX_USER_STRING_LENGTH) {
+ private String truncateString(String original, int limit) {
+ if (original == null || original.length() <= limit) {
return original;
}
- return original.substring(0, MAX_USER_STRING_LENGTH);
+ return original.substring(0, limit);
}
/*
@@ -3409,7 +3409,7 @@ public class UserManagerService extends IUserManager.Stub {
@NonNull String userType, @UserInfoFlag int flags, @UserIdInt int parentId,
boolean preCreate, @Nullable String[] disallowedPackages,
@NonNull TimingsTraceAndSlog t) throws UserManager.CheckedUserOperationException {
- String truncatedName = truncateString(name);
+ String truncatedName = truncateString(name, UserManager.MAX_USER_NAME_LENGTH);
final UserTypeDetails userTypeDetails = mUserTypes.get(userType);
if (userTypeDetails == null) {
Slog.e(LOG_TAG, "Cannot create user of invalid user type: " + userType);
@@ -4619,9 +4619,14 @@ public class UserManagerService extends IUserManager.Stub {
Slog.e(LOG_TAG, "No such user for settings seed data u=" + userId);
return;
}
- userData.seedAccountName = truncateString(accountName);
- userData.seedAccountType = truncateString(accountType);
- userData.seedAccountOptions = accountOptions;
+ userData.seedAccountName = truncateString(accountName,
+ UserManager.MAX_ACCOUNT_STRING_LENGTH);
+ userData.seedAccountType = truncateString(accountType,
+ UserManager.MAX_ACCOUNT_STRING_LENGTH);
+ if (accountOptions != null && accountOptions.isBundleContentsWithinLengthLimit(
+ UserManager.MAX_ACCOUNT_OPTIONS_LENGTH)) {
+ userData.seedAccountOptions = accountOptions;
+ }
userData.persistSeedData = persist;
}
if (persist) {
diff --git a/services/tests/servicestests/src/com/android/server/pm/UserManagerTest.java b/services/tests/servicestests/src/com/android/server/pm/UserManagerTest.java
index 44bb58f62253..e7bb3ef42136 100644
--- a/services/tests/servicestests/src/com/android/server/pm/UserManagerTest.java
+++ b/services/tests/servicestests/src/com/android/server/pm/UserManagerTest.java
@@ -19,6 +19,7 @@ package com.android.server.pm;
import static com.google.common.truth.Truth.assertThat;
import static com.google.common.truth.Truth.assertWithMessage;
+import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.junit.Assume.assumeTrue;
import static org.testng.Assert.assertThrows;
@@ -33,6 +34,7 @@ import android.content.pm.PackageManager;
import android.content.pm.UserInfo;
import android.content.res.Resources;
import android.os.Bundle;
+import android.os.PersistableBundle;
import android.os.UserHandle;
import android.os.UserManager;
import android.provider.Settings;
@@ -879,6 +881,106 @@ public final class UserManagerTest {
assertThat(userInfo.name).isEqualTo(newName);
}
+ @Test
+ public void testAddUserAccountData_validStringValuesAreSaved_validBundleIsSaved() {
+ assumeManagedUsersSupported();
+
+ String userName = "User";
+ String accountName = "accountName";
+ String accountType = "accountType";
+ String arrayKey = "StringArrayKey";
+ String stringKey = "StringKey";
+ String intKey = "IntKey";
+ String nestedBundleKey = "PersistableBundleKey";
+ String value1 = "Value 1";
+ String value2 = "Value 2";
+ String value3 = "Value 3";
+
+ UserInfo userInfo = mUserManager.createUser(userName,
+ UserManager.USER_TYPE_FULL_SECONDARY, 0);
+
+ PersistableBundle accountOptions = new PersistableBundle();
+ String[] stringArray = {value1, value2};
+ accountOptions.putInt(intKey, 1234);
+ PersistableBundle nested = new PersistableBundle();
+ nested.putString(stringKey, value3);
+ accountOptions.putPersistableBundle(nestedBundleKey, nested);
+ accountOptions.putStringArray(arrayKey, stringArray);
+
+ mUserManager.clearSeedAccountData();
+ mUserManager.setSeedAccountData(mContext.getUserId(), accountName,
+ accountType, accountOptions);
+
+ //assert userName accountName and accountType were saved correctly
+ assertTrue(mUserManager.getUserInfo(userInfo.id).name.equals(userName));
+ assertTrue(mUserManager.getSeedAccountName().equals(accountName));
+ assertTrue(mUserManager.getSeedAccountType().equals(accountType));
+
+ //assert bundle with correct values was added
+ assertThat(mUserManager.getSeedAccountOptions().containsKey(arrayKey)).isTrue();
+ assertThat(mUserManager.getSeedAccountOptions().getPersistableBundle(nestedBundleKey)
+ .getString(stringKey)).isEqualTo(value3);
+ assertThat(mUserManager.getSeedAccountOptions().getStringArray(arrayKey)[0])
+ .isEqualTo(value1);
+
+ mUserManager.removeUser(userInfo.id);
+ }
+
+ @Test
+ public void testAddUserAccountData_invalidStringValuesAreTruncated_invalidBundleIsDropped() {
+ assumeManagedUsersSupported();
+
+ String tooLongString = generateLongString();
+ String userName = "User " + tooLongString;
+ String accountType = "Account Type " + tooLongString;
+ String accountName = "accountName " + tooLongString;
+ String arrayKey = "StringArrayKey";
+ String stringKey = "StringKey";
+ String intKey = "IntKey";
+ String nestedBundleKey = "PersistableBundleKey";
+ String value1 = "Value 1";
+ String value2 = "Value 2";
+
+ UserInfo userInfo = mUserManager.createUser(userName,
+ UserManager.USER_TYPE_FULL_SECONDARY, 0);
+
+ PersistableBundle accountOptions = new PersistableBundle();
+ String[] stringArray = {value1, value2};
+ accountOptions.putInt(intKey, 1234);
+ PersistableBundle nested = new PersistableBundle();
+ nested.putString(stringKey, tooLongString);
+ accountOptions.putPersistableBundle(nestedBundleKey, nested);
+ accountOptions.putStringArray(arrayKey, stringArray);
+ mUserManager.clearSeedAccountData();
+ mUserManager.setSeedAccountData(mContext.getUserId(), accountName,
+ accountType, accountOptions);
+
+ //assert userName was truncated
+ assertTrue(mUserManager.getUserInfo(userInfo.id).name.length()
+ == UserManager.MAX_USER_NAME_LENGTH);
+
+ //assert accountName and accountType got truncated
+ assertTrue(mUserManager.getSeedAccountName().length()
+ == UserManager.MAX_ACCOUNT_STRING_LENGTH);
+ assertTrue(mUserManager.getSeedAccountType().length()
+ == UserManager.MAX_ACCOUNT_STRING_LENGTH);
+
+ //assert bundle with invalid values was dropped
+ assertThat(mUserManager.getSeedAccountOptions() == null).isTrue();
+
+ mUserManager.removeUser(userInfo.id);
+ }
+
+ private String generateLongString() {
+ String partialString = "Test Name Test Name Test Name Test Name Test Name Test Name Test "
+ + "Name Test Name Test Name Test Name "; //String of length 100
+ StringBuilder resultString = new StringBuilder();
+ for (int i = 0; i < 600; i++) {
+ resultString.append(partialString);
+ }
+ return resultString.toString();
+ }
+
private boolean isPackageInstalledForUser(String packageName, int userId) {
try {
return mPackageManager.getPackageInfoAsUser(packageName, 0, userId) != null;

View File

@ -124,6 +124,7 @@ patchWorkspaceReal() {
repopick -fit hh-vsync;
repopick -fi 311299; #ble: Workaround malformed HCI_BLE_VENDOR_CAP response
repopick -it R_asb_2024-03;
repopick -it R_asb_2024-04;
sh "$DOS_SCRIPTS/Patch.sh";
sh "$DOS_SCRIPTS_COMMON/Enable_Verity.sh";

View File

@ -126,8 +126,6 @@ fi;
if enterAndClear "frameworks/base"; then
git revert --no-edit 438d9feacfcad73d3ee918541574132928a93644; #Reverts "Allow signature spoofing for microG Companion/Services" in favor of below patch
applyPatch "$DOS_PATCHES/android_frameworks_base/389013.patch"; #S_asb_2024-04 isUserInLockDown can be true when there are other strong auth requirements
applyPatch "$DOS_PATCHES/android_frameworks_base/389014-backport.patch"; #S_asb_2024-04 Fix security vulnerability that creates user with no restrictions when accountOptions are too long.
applyPatch "$DOS_PATCHES/android_frameworks_base/0007-Always_Restict_Serial.patch"; #Always restrict access to Build.SERIAL (GrapheneOS)
applyPatch "$DOS_PATCHES/android_frameworks_base/0008-Browser_No_Location.patch"; #Don't grant location permission to system browsers (GrapheneOS)
applyPatch "$DOS_PATCHES/android_frameworks_base/0009-SystemUI_No_Permission_Review.patch"; #Allow SystemUI to directly manage Bluetooth/WiFi (GrapheneOS)