CVE-2022-20028 : Security Advisory and Response

Bluetooth in certain MediaTek devices is affected by a vulnerability that could allow an attacker to perform an out-of-bounds write, leading to local privilege escalation without additional privileges. No user interaction is required for exploitation.

Understanding CVE-2022-20028

This CVE-2022-20028 vulnerability affects MediaTek devices and poses a risk of privilege escalation without the need for user interaction.

What is CVE-2022-20028?

CVE-2022-20028 is a security vulnerability found in the Bluetooth functionality of MediaTek devices. It arises from a missing bounds check, allowing an attacker to trigger an out-of-bounds write.

The Impact of CVE-2022-20028

The impact of CVE-2022-20028 is significant as it enables an attacker to locally escalate privileges on affected devices without any additional execution privileges, thereby posing a serious security risk.

Technical Details of CVE-2022-20028

This section delves into the specific technical aspects of the CVE-2022-20028 vulnerability.

Vulnerability Description

The vulnerability stems from a missing bounds check in the Bluetooth module of MediaTek devices, facilitating an out-of-bounds write that can be exploited for local privilege escalation.

Affected Systems and Versions

Devices running MediaTek processors including MT8167, MT8175, MT8183, MT8362A, MT8365, and MT8385, with Android versions 8.1 to 12.0, are affected by CVE-2022-20028.

Exploitation Mechanism

Exploiting this vulnerability does not require any user interaction, making it more dangerous. An attacker can potentially exploit the flaw to gain elevated privileges on the targeted system.

Mitigation and Prevention

To address CVE-2022-20028, immediate actions and long-term security practices are essential.

Immediate Steps to Take

Users are advised to apply security patches provided by MediaTek to fix the vulnerability. Regularly updating the device's software is crucial to prevent exploitation.

Long-Term Security Practices

In addition to patching, implementing strong security measures such as keeping software up to date, using reputable security solutions, and following best security practices can help enhance the overall security posture.

Patching and Updates

Ensuring that the affected devices receive timely security patches from MediaTek is crucial to mitigate the risks posed by CVE-2022-20028.