CVE-2022-20073 : Security Advisory and Response

This CVE-2022-20073 impacts various MediaTek devices running Android 10.0, 11.0, and 12.0. The vulnerability lies in the preloader (usb) component, potentially leading to local privilege escalation.

Understanding CVE-2022-20073

This vulnerability affects a wide range of MediaTek devices and requires physical access for exploitation.

What is CVE-2022-20073?

The CVE-2022-20073 vulnerability involves an out-of-bounds write due to an integer underflow in the preloader (usb) component. An attacker with physical device access could exploit this to escalate privileges locally without additional execution permissions.

The Impact of CVE-2022-20073

The impact of this CVE is the potential escalation of privilege, allowing an attacker to gain elevated access to the device via user interaction, posing a security risk to affected devices.

Technical Details of CVE-2022-20073

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability stems from an integer underflow in the preloader (usb) component, enabling an attacker with physical access to the device to perform out-of-bounds write operations.

Affected Systems and Versions

Devices built with MediaTek processors including MT2601, MT6580, MT6735, and more running Android 10.0, 11.0, and 12.0 are susceptible to this vulnerability.

Exploitation Mechanism

Exploiting this vulnerability requires an attacker to have physical access to the device, with no additional execution privileges needed and user interaction being a key factor.

Mitigation and Prevention

To secure the affected devices, immediate and long-term preventive measures need to be implemented.

Immediate Steps to Take

Users and administrators must apply the latest patches and updates provided by MediaTek to address CVE-2022-20073 and prevent exploitation.

Long-Term Security Practices

Implementing robust security practices, restricting physical access to devices, and educating users about potential security risks can help mitigate similar vulnerabilities in the future.

Patching and Updates

Regularly checking for and applying security patches and updates from MediaTek is crucial for maintaining the security of the devices and safeguarding them against potential threats.