CVE-2022-20058 : Security Advisory and Response

This article discusses CVE-2022-20058, a security vulnerability found in MediaTek devices that could lead to local escalation of privilege.

Understanding CVE-2022-20058

CVE-2022-20058 is a vulnerability discovered in MediaTek devices that have the potential for local privilege escalation.

What is CVE-2022-20058?

In the preloader (usb) of MediaTek devices, a missing bounds check could result in an out-of-bounds write vulnerability. This flaw may enable an attacker with physical access to the device to escalate privileges locally without requiring additional execution privileges. Exploitation of this vulnerability necessitates user interaction, making it crucial for security awareness.

The Impact of CVE-2022-20058

The impact of CVE-2022-20058 lies in the potential local escalation of privilege it affords to attackers with physical access to affected MediaTek devices. By exploiting this vulnerability, threat actors could gain elevated privileges without additional execution rights, highlighting the importance of prompt mitigation.

Technical Details of CVE-2022-20058

CVE-2022-20058 affects a range of MediaTek products across various versions of the Android operating system.

Vulnerability Description

The vulnerability stems from a missing bounds check in the preloader (usb) component, allowing an out-of-bounds write capability.

Affected Systems and Versions

MediaTek devices running Android 10.0, 11.0, and 12.0 versions are susceptible to CVE-2022-20058.

Exploitation Mechanism

Exploitation of this vulnerability requires physical access to the device and user interaction, with no additional execution privileges needed.

Mitigation and Prevention

To safeguard against CVE-2022-20058 and prevent potential privilege escalation, immediate actions and long-term security practices are recommended.

Immediate Steps to Take

Implement security updates and patches promptly, follow best practices in device access control, and maintain physical security protocols to mitigate the risk of exploitation.

Long-Term Security Practices

Establish comprehensive security protocols, educate users on safe device practices, conduct regular security assessments, and stay informed of security advisories and updates from MediaTek.

Patching and Updates

MediaTek has released Patch ID ALPS06160806 to address the vulnerability. Device owners are advised to apply the patch promptly to secure their devices against potential exploitation.