CVE-2022-20398 : Security Advisory and Response

A vulnerability has been identified in Android-13 that could allow a guest user to configure Wi-Fi, leading to a local privilege escalation without the need for user interaction.

Understanding CVE-2022-20398

This CVE affects the WifiServiceImpl.java file in Android-13, allowing unauthorized users to manipulate Wi-Fi settings, potentially leading to an elevation of privilege.

What is CVE-2022-20398?

The vulnerability in addOrUpdateNetwork of WifiServiceImpl.java enables guest users to configure Wi-Fi without proper permissions, resulting in a local privilege escalation scenario requiring User execution privileges.

The Impact of CVE-2022-20398

The impact of this CVE is significant as it allows attackers to exploit Wi-Fi settings without user interaction, potentially leading to unauthorized privilege escalation.

Technical Details of CVE-2022-20398

Vulnerability Description

The vulnerability arises due to a permissions bypass in the addOrUpdateNetwork function of WifiServiceImpl.java, which allows guest users to configure Wi-Fi.

Affected Systems and Versions

The issue affects Android-13 versions specifically, where the vulnerability exists in the mentioned code snippet.

Exploitation Mechanism

Attackers can exploit this vulnerability to escalate their privileges locally without the user's knowledge or interaction.

Mitigation and Prevention

Immediate Steps to Take

Users are advised to apply the latest security patches provided by Android to mitigate the risk associated with CVE-2022-20398.

Long-Term Security Practices

It is crucial to follow security best practices, such as limiting guest user permissions and monitoring Wi-Fi configurations to prevent similar exploits.

Patching and Updates

Regularly check for security updates from Android and apply patches promptly to safeguard against potential privilege escalation vulnerabilities.