CVE-2022-20244 : Exploit Details and Defense Strategies

This article provides detailed information about CVE-2022-20244, a security vulnerability affecting Android-13 that could result in local escalation of privilege through Bluetooth without the need for user interaction.

Understanding CVE-2022-20244

CVE-2022-20244 is a vulnerability found in Android-13 that involves a possible out-of-bounds write issue in Bluetooth. This flaw could be exploited to achieve local privilege escalation without the requirement for user interaction.

What is CVE-2022-20244?

The vulnerability in CVE-2022-20244 allows an attacker to perform a local escalation of privilege by exploiting a missing bounds check in Bluetooth. Specifically, this can occur when more than 100 Bluetooth devices are connected without the need for additional execution privileges.

The Impact of CVE-2022-20244

The impact of CVE-2022-20244 is the potential for an attacker to exploit the Bluetooth vulnerability to elevate their privileges locally on an affected Android-13 device, leading to unauthorized access and potential further compromise.

Technical Details of CVE-2022-20244

Below are the technical details related to CVE-2022-20244:

Vulnerability Description

The vulnerability involves an out-of-bounds write issue in Bluetooth in Android-13 due to a missing bounds check, which could be leveraged for privilege escalation.

Affected Systems and Versions

The affected product is Android, specifically version Android-13, making devices running this particular version vulnerable to the exploit.

Exploitation Mechanism

Exploiting CVE-2022-20244 requires an attacker to connect more than 100 Bluetooth devices to the target Android-13 device without the need for additional execution privileges.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-20244, follow these guidelines:

Immediate Steps to Take

Update affected devices to a patched version that addresses the Bluetooth vulnerability.
Limit the number of Bluetooth devices connected to each Android-13 device.

Long-Term Security Practices

Regularly update Android devices to the latest software versions to patch known vulnerabilities.
Implement network segmentation and access controls to reduce the attack surface.

Patching and Updates

Check for security bulletins and updates from official sources like Android's security bulletin to stay informed about patches and fixes for CVE-2022-20244.