CVE-2019-2146

Vulnerability

An out-of-bounds read vulnerability exists in libxaac on Android 10 (security patch level 2019-09-01 or later) due to a missing bounds check. This affects all Android 10 devices with a patch level of 2019-09-01. The vulnerability is identified by Android ID A-112859714 [1].

Exploitation

An attacker must convince a user to interact with a specially crafted media file or other input processed by libxaac. No additional execution privileges are required beyond the user interaction. The attacker does not need prior system access, but the user must perform some action (e.g., opening a malicious file or link) to trigger the out-of-bounds read.

Impact

Successful exploitation leads to information disclosure, potentially exposing sensitive data from the device's memory. The attacker does not gain elevated privileges or the ability to modify data; the impact is limited to reading out-of-bounds memory content [1].

Mitigation

The vulnerability is fixed in Android 10, which ships with a default security patch level of 2019-09-01. Users should ensure their device receives the Android 10 update containing the fix. No workarounds are documented; applying the platform update is the recommended mitigation [1].