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Code Issues Packages Projects Releases 169 Wiki Activity

[PM- 22735] Unsafe deserialization parcel data intent (#5419)

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Co-authored-by: David Perez <david@livefront.com>
This commit is contained in:
Carlos Gonçalves 2025-07-14 15:34:26 +01:00 committed by GitHub
parent 37af6a1773
commit 929233081c
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11 changed files with 147 additions and 102 deletions
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12
app/src/main/kotlin/com/x8bit/bitwarden/AccessibilityActivity.kt
View File

@ -1,8 +1,11 @@
package com.x8bit.bitwarden
import android.app.ComponentCaller
import android.content.Intent
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import com.bitwarden.annotation.OmitFromCoverage
import com.bitwarden.ui.platform.util.validate
/**
* An activity to be launched and then immediately closed so that the OS Shade can be collapsed
@ -11,7 +14,16 @@ import com.bitwarden.annotation.OmitFromCoverage
@OmitFromCoverage
class AccessibilityActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
intent = intent.validate()
super.onCreate(savedInstanceState)
finish()
}
override fun onNewIntent(intent: Intent) {
super.onNewIntent(intent.validate())
}
override fun onNewIntent(intent: Intent, caller: ComponentCaller) {
super.onNewIntent(intent.validate(), caller)
}
}

11
app/src/main/kotlin/com/x8bit/bitwarden/AuthCallbackActivity.kt
View File

@ -1,10 +1,12 @@
package com.x8bit.bitwarden
import android.app.ComponentCaller
import android.content.Intent
import android.os.Bundle
import androidx.activity.viewModels
import androidx.appcompat.app.AppCompatActivity
import com.bitwarden.annotation.OmitFromCoverage
import com.bitwarden.ui.platform.util.validate
import dagger.hilt.android.AndroidEntryPoint
/**
@ -21,6 +23,7 @@ class AuthCallbackActivity : AppCompatActivity() {
private val viewModel: AuthCallbackViewModel by viewModels()
override fun onCreate(savedInstanceState: Bundle?) {
intent = intent.validate()
super.onCreate(savedInstanceState)
viewModel.trySendAction(AuthCallbackAction.IntentReceive(intent = intent))
@ -35,4 +38,12 @@ class AuthCallbackActivity : AppCompatActivity() {
startActivity(intent)
finish()
}
override fun onNewIntent(intent: Intent) {
super.onNewIntent(intent.validate())
}
override fun onNewIntent(intent: Intent, caller: ComponentCaller) {
super.onNewIntent(intent.validate(), caller)
}
}

12
app/src/main/kotlin/com/x8bit/bitwarden/AutofillTotpCopyActivity.kt
View File

@ -1,10 +1,13 @@
package com.x8bit.bitwarden
import android.app.ComponentCaller
import android.content.Intent
import android.os.Bundle
import androidx.activity.viewModels
import androidx.appcompat.app.AppCompatActivity
import androidx.lifecycle.lifecycleScope
import com.bitwarden.annotation.OmitFromCoverage
import com.bitwarden.ui.platform.util.validate
import com.x8bit.bitwarden.data.autofill.manager.AutofillCompletionManager
import dagger.hilt.android.AndroidEntryPoint
import kotlinx.coroutines.flow.launchIn
@ -26,6 +29,7 @@ class AutofillTotpCopyActivity : AppCompatActivity() {
private val autofillTotpCopyViewModel: AutofillTotpCopyViewModel by viewModels()
override fun onCreate(savedInstanceState: Bundle?) {
intent = intent.validate()
super.onCreate(savedInstanceState)
observeViewModelEvents()
@ -37,6 +41,14 @@ class AutofillTotpCopyActivity : AppCompatActivity() {
)
}
override fun onNewIntent(intent: Intent) {
super.onNewIntent(intent.validate())
}
override fun onNewIntent(intent: Intent, caller: ComponentCaller) {
super.onNewIntent(intent.validate(), caller)
}
private fun observeViewModelEvents() {
autofillTotpCopyViewModel
.eventFlow

14
app/src/main/kotlin/com/x8bit/bitwarden/MainActivity.kt
View File

@ -1,5 +1,6 @@
package com.x8bit.bitwarden
import android.app.ComponentCaller
import android.content.Intent
import android.os.Build
import android.os.Bundle
@ -23,6 +24,7 @@ import com.bitwarden.annotation.OmitFromCoverage
import com.bitwarden.ui.platform.base.util.EventsEffect
import com.bitwarden.ui.platform.theme.BitwardenTheme
import com.bitwarden.ui.platform.util.setupEdgeToEdge
import com.bitwarden.ui.platform.util.validate
import com.x8bit.bitwarden.data.autofill.accessibility.manager.AccessibilityCompletionManager
import com.x8bit.bitwarden.data.autofill.manager.AutofillActivityManager
import com.x8bit.bitwarden.data.autofill.manager.AutofillCompletionManager
@ -67,6 +69,7 @@ class MainActivity : AppCompatActivity() {
lateinit var debugLaunchManager: DebugMenuLaunchManager
override fun onCreate(savedInstanceState: Bundle?) {
intent = intent.validate()
var shouldShowSplashScreen = true
installSplashScreen().setKeepOnScreenCondition { shouldShowSplashScreen }
super.onCreate(savedInstanceState)
@ -114,8 +117,15 @@ class MainActivity : AppCompatActivity() {
}
override fun onNewIntent(intent: Intent) {
super.onNewIntent(intent)
mainViewModel.trySendAction(action = MainAction.ReceiveNewIntent(intent = intent))
val newIntent = intent.validate()
super.onNewIntent(newIntent)
mainViewModel.trySendAction(action = MainAction.ReceiveNewIntent(intent = newIntent))
}
override fun onNewIntent(intent: Intent, caller: ComponentCaller) {
val newIntent = intent.validate()
super.onNewIntent(newIntent, caller)
mainViewModel.trySendAction(action = MainAction.ReceiveNewIntent(intent = newIntent))
}
override fun onResume() {

2
app/src/main/kotlin/com/x8bit/bitwarden/data/auth/util/PasswordlessRequestDataUtils.kt
View File

@ -4,7 +4,7 @@ import android.content.Context
import android.content.Intent
import com.x8bit.bitwarden.MainActivity
import com.x8bit.bitwarden.data.platform.manager.model.PasswordlessRequestData
import com.x8bit.bitwarden.data.platform.util.getSafeParcelableExtra
import com.bitwarden.ui.platform.util.getSafeParcelableExtra
private const val NOTIFICATION_DATA: String = "notificationData"

2
app/src/main/kotlin/com/x8bit/bitwarden/data/autofill/util/AutofillIntentUtils.kt
View File

@ -18,7 +18,7 @@ import com.x8bit.bitwarden.data.autofill.model.AutofillAppInfo
import com.x8bit.bitwarden.data.autofill.model.AutofillSaveItem
import com.x8bit.bitwarden.data.autofill.model.AutofillSelectionData
import com.x8bit.bitwarden.data.autofill.model.AutofillTotpCopyData
import com.x8bit.bitwarden.data.platform.util.getSafeParcelableExtra
import com.bitwarden.ui.platform.util.getSafeParcelableExtra
import kotlin.random.Random
private const val AUTOFILL_SAVE_ITEM_DATA_KEY = "autofill-save-item-data"

24
authenticator/src/main/kotlin/com/bitwarden/authenticator/MainActivity.kt
View File

@ -1,5 +1,6 @@
package com.bitwarden.authenticator
import android.app.ComponentCaller
import android.content.Intent
import android.os.Bundle
import android.view.KeyEvent
@ -14,13 +15,13 @@ import androidx.lifecycle.compose.collectAsStateWithLifecycle
import androidx.lifecycle.lifecycleScope
import androidx.navigation.NavHostController
import androidx.navigation.compose.rememberNavController
import com.bitwarden.authenticator.data.platform.util.isSuspicious
import com.bitwarden.authenticator.ui.platform.composition.LocalManagerProvider
import com.bitwarden.authenticator.ui.platform.feature.debugmenu.manager.DebugMenuLaunchManager
import com.bitwarden.authenticator.ui.platform.feature.debugmenu.navigateToDebugMenuScreen
import com.bitwarden.authenticator.ui.platform.feature.rootnav.RootNavScreen
import com.bitwarden.authenticator.ui.platform.theme.AuthenticatorTheme
import com.bitwarden.ui.platform.util.setupEdgeToEdge
import com.bitwarden.ui.platform.util.validate
import dagger.hilt.android.AndroidEntryPoint
import kotlinx.coroutines.flow.launchIn
import kotlinx.coroutines.flow.map
@ -39,7 +40,7 @@ class MainActivity : AppCompatActivity() {
lateinit var debugLaunchManager: DebugMenuLaunchManager
override fun onCreate(savedInstanceState: Bundle?) {
sanitizeIntent()
intent = intent.validate()
var shouldShowSplashScreen = true
installSplashScreen().setKeepOnScreenCondition { shouldShowSplashScreen }
super.onCreate(savedInstanceState)
@ -72,20 +73,15 @@ class MainActivity : AppCompatActivity() {
}
override fun onNewIntent(intent: Intent) {
super.onNewIntent(intent)
sanitizeIntent()
mainViewModel.trySendAction(
MainAction.ReceiveNewIntent(intent = intent),
)
val newIntent = intent.validate()
super.onNewIntent(newIntent)
mainViewModel.trySendAction(MainAction.ReceiveNewIntent(intent = newIntent))
}
private fun sanitizeIntent() {
if (intent.isSuspicious) {
intent = Intent(
/* packageContext = */ this,
/* cls = */ MainActivity::class.java,
)
}
override fun onNewIntent(intent: Intent, caller: ComponentCaller) {
val newIntent = intent.validate()
super.onNewIntent(newIntent, caller)
mainViewModel.trySendAction(MainAction.ReceiveNewIntent(intent = newIntent))
}
private fun observeViewModelEvents(navController: NavHostController) {

19
authenticator/src/main/kotlin/com/bitwarden/authenticator/data/platform/util/IntentExtensions.kt
View File

@ -1,19 +0,0 @@
package com.bitwarden.authenticator.data.platform.util
import android.content.Intent
/**
* Returns true if this intent contains unexpected or suspicious data.
*/
val Intent.isSuspicious: Boolean
get() {
return try {
val containsSuspiciousExtras = extras?.isEmpty() == false
val containsSuspiciousData = data != null
containsSuspiciousData || containsSuspiciousExtras
} catch (_: Exception) {
// `unparcel()` throws an exception on Android 12 and below if the bundle contains
// suspicious data, so we catch the exception and return true.
true
}
}

64
authenticator/src/test/kotlin/com/bitwarden/authenticator/data/platform/util/IntentExtensionsTest.kt
View File

@ -1,64 +0,0 @@
package com.bitwarden.authenticator.data.platform.util
import android.content.Intent
import io.mockk.every
import io.mockk.mockk
import org.junit.jupiter.api.Assertions.assertFalse
import org.junit.jupiter.api.Assertions.assertTrue
import org.junit.jupiter.api.Test
class IntentExtensionsTest {
@Test
fun `isSuspicious should return true when extras are not empty`() {
val intent = mockk<Intent> {
every { data } returns mockk()
every { extras } returns mockk {
every { isEmpty } returns false
}
}
assertTrue(intent.isSuspicious)
}
@Test
fun `isSuspicious should return true when extras are null`() {
val intent = mockk<Intent> {
every { data } returns mockk()
every { extras } returns null
}
assertTrue(intent.isSuspicious)
}
@Test
fun `isSuspicious should return true when data is not null`() {
val intent = mockk<Intent> {
every { data } returns mockk()
every { extras } returns null
}
assertTrue(intent.isSuspicious)
}
@Test
fun `isSuspicious should return false when data and extras are null`() {
val intent = mockk<Intent> {
every { data } returns null
every { extras } returns null
}
assertFalse(intent.isSuspicious)
}
@Test
fun `isSuspicious should return false when data is null and extras are empty`() {
val intent = mockk<Intent> {
every { data } returns null
every { extras } returns mockk {
every { isEmpty } returns true
}
}
assertFalse(intent.isSuspicious)
}
}

21
app/src/main/kotlin/com/x8bit/bitwarden/data/platform/util/IntentExtensions.kt → ui/src/main/kotlin/com/bitwarden/ui/platform/util/IntentExtensions.kt
View File

@ -1,8 +1,9 @@
@file:OmitFromCoverage
package com.x8bit.bitwarden.data.platform.util
package com.bitwarden.ui.platform.util
import android.content.Intent
import android.os.BadParcelableException
import android.os.Bundle
import android.os.Parcelable
import androidx.core.content.IntentCompat
@ -24,3 +25,21 @@ inline fun <reified T> Intent.getSafeParcelableExtra(
inline fun <reified T> Bundle.getSafeParcelableExtra(
name: String,
): T? = BundleCompat.getParcelable(this, name, T::class.java)
/**
* Validate if there's anything suspicious with the intent received and returns a new valid intent.
*/
fun Intent.validate(): Intent =
try {
// This will force Android to attempt to fetch each item and verify it is valid
this.extras?.let { bundle ->
bundle.keySet().forEach { @Suppress("DEPRECATION") bundle.get(it) }
}
this
} catch (_: BadParcelableException) {
this.replaceExtras(null as Bundle?)
} catch (_: ClassNotFoundException) {
this.replaceExtras(null as Bundle?)
} catch (@Suppress("TooGenericExceptionCaught") _: RuntimeException) {
this.replaceExtras(null as Bundle?)
}

68
ui/src/test/kotlin/com/bitwarden/ui/platform/util/IntentExtensionsTest.kt Normal file
View File

@ -0,0 +1,68 @@
package com.bitwarden.ui.platform.util
import android.content.Intent
import android.os.BadParcelableException
import android.os.Bundle
import io.mockk.every
import io.mockk.mockk
import io.mockk.mockkStatic
import io.mockk.unmockkStatic
import io.mockk.verify
import org.junit.jupiter.api.AfterEach
import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Test
class IntentExtensionsTest {
@BeforeEach
fun setUp() {
mockkStatic(Intent::class)
}
@AfterEach
fun tearDown() {
unmockkStatic(Intent::class)
}
@Test
fun `validate should not modify the current intent`() {
val intent = mockk<Intent>(relaxed = true) {
every { getStringExtra("token") } returns "myToken"
}
intent.validate()
assertEquals("myToken", intent.getStringExtra("token"))
}
@Test
fun `validate should remove extras if BadParcelableException is thrown`() {
val mockIntent = mockk<Intent>(relaxed = true)
every { mockIntent.extras } throws BadParcelableException("Bad parcel")
mockIntent.validate()
verify { mockIntent.replaceExtras(null as Bundle?) }
}
@Test
fun `validate should remove extras if ClassNotFoundException is thrown`() {
val mockIntent = mockk<Intent>(relaxed = true)
every { mockIntent.extras } throws ClassNotFoundException("Bad parcel")
mockIntent.validate()
verify { mockIntent.replaceExtras(null as Bundle?) }
}
@Test
fun `validate should remove extras if RuntimeException is thrown`() {
val mockIntent = mockk<Intent>(relaxed = true)
every { mockIntent.extras } throws RuntimeException("Bad parcel")
mockIntent.validate()
verify { mockIntent.replaceExtras(null as Bundle?) }
}
}