CTS test for Android Security b/154915372

Bug: 154915372
Bug: 170661753
Test: Ran the new testcase on android-10.0.0_r38 with/without patch
Test: sts-tradefed run sts-engbuild-no-spl-lock -m CtsSecurityTestCases -t android.security.cts.CVE_2020_0294

Change-Id: I8b01f3bf273d8e2aee453b47b3f223fda49ea730
diff --git a/tests/tests/security/src/android/security/cts/CVE_2020_0294.java b/tests/tests/security/src/android/security/cts/CVE_2020_0294.java
new file mode 100644
index 0000000..7310606
--- /dev/null
+++ b/tests/tests/security/src/android/security/cts/CVE_2020_0294.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security.cts;
+
+import android.app.ActivityManager;
+import android.app.Instrumentation;
+import android.app.PendingIntent;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.platform.test.annotations.SecurityTest;
+import android.test.AndroidTestCase;
+
+import androidx.test.InstrumentationRegistry;
+
+@SecurityTest
+public class CVE_2020_0294 extends AndroidTestCase {
+    private static final String TAG = "CVE_2020_0294";
+
+    /**
+     * b/170661753
+     */
+    @SecurityTest(minPatchLevel = "2020-12")
+    public void testPocCVE_2020_0294() throws Exception {
+        Instrumentation instrumentation = InstrumentationRegistry.getInstrumentation();
+        ActivityManager activityManager = (ActivityManager) instrumentation.getContext()
+                .getSystemService(Context.ACTIVITY_SERVICE);
+        Context targetContext = instrumentation.getTargetContext();
+        ComponentName componentName =
+                ComponentName.unflattenFromString("com.android.systemui/.ImageWallpaper");
+        PendingIntent pi = activityManager.getRunningServiceControlPanel(componentName);
+
+        Intent spuriousIntent = new Intent();
+        spuriousIntent.setPackage(targetContext.getPackageName());
+        spuriousIntent.setDataAndType(
+                Uri.parse("content://com.android.settings.files/my_cache/NOTICE.html"), "txt/html");
+        spuriousIntent.setFlags(
+                Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
+        try {
+            pi.send(targetContext, 0, spuriousIntent, null, null);
+        } catch (PendingIntent.CanceledException e) {
+            //This means PendingIntent has failed as its mutable
+            fail("PendingIntent from WallpaperManagerService is mutable");
+        }
+    }
+}