The vulnerability is that the Messaging ("com.android.mms") app patched by LG forwards attacker-controlled intents back to the attacker in the exported "com.android.mms.ui.QClipIntentReceiverActivity" activity. The attacker can abuse this functionality by launching this activity and then sending a broadcast with the "com.lge.message.action.QCLIP" action. The attacker can send, e.g., their own data/clipdata and set Intent.FLAG_GRANT_* flags. After the attacker received that intent in the "onActivityResult()" method, they would have access to arbitrary content providers that have the `android:grantUriPermissions="true"` flag set.
The Android application exports a component for use by other applications, but does not properly restrict which applications can launch the component or access the data it contains.
| Link | Tags |
|---|---|
| https://lgsecurity.lge.com/bulletins/mobile#updateDetails | vendor advisory |