CVE-2019-9431 Use after free in Android

Medium 4.9 Published 27 Sep 2019 Updated 4 Aug 2024

A use-after-free in Android Bluetooth allows remote attackers to disclose heap information via logs, requiring system privileges but no user interaction.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2019-9431?

CVE-2019-9431 is a medium-severity use after free vulnerability in Google Android, published on 27 Sep 2019. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

In Bluetooth, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with heap information written to the log with System execution privileges needed. User interaction is not needed for exploitation. Product: AndroidVersions: Android-10Android ID: A-109755179

Weakness: CWE-416, CWE-125

Which versions are affected by CVE-2019-9431?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2019-9431?

No fix has been published for CVE-2019-9431 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2019-9431 being exploited?

There is no known exploitation of CVE-2019-9431 in the wild and no public exploit code.

All Google Android vulnerabilities

Sources

Also known as GHSA-q672-82r7-3973.