CVE-2021-0602 : Vulnerability Insights and Analysis

Android has identified a vulnerability (CVE-2021-0602) that allows guest users to view and modify Wi-Fi settings for all configured access points, leading to a local privilege escalation without requiring additional permissions. This issue affects Android versions 10 and 11.

Understanding CVE-2021-0602

This section provides insights into the nature of the CVE-2021-0602 vulnerability.

What is CVE-2021-0602?

CVE-2021-0602 involves a permissions bypass in the onCreateOptionsMenu of WifiNetworkDetailsFragment.java, enabling unauthorized guest users to access and change Wi-Fi settings across all access points.

The Impact of CVE-2021-0602

The vulnerability poses a risk of local privilege escalation for attackers, allowing them to modify crucial network settings without explicit user interaction, potentially leading to unauthorized access to sensitive information.

Technical Details of CVE-2021-0602

In this section, we delve into the specifics of CVE-2021-0602.

Vulnerability Description

The vulnerability stems from a lack of proper permission checks, specifically in the onCreateOptionsMenu of WifiNetworkDetailsFragment.java, enabling unauthorized users to manipulate Wi-Fi settings without the necessary permissions.

Affected Systems and Versions

CVE-2021-0602 impacts Android versions 10 and 11 where guest users can exploit the vulnerability to escalate their privileges locally and make unauthorized changes to Wi-Fi configurations.

Exploitation Mechanism

By utilizing this vulnerability, guest users can bypass permissions and access and alter Wi-Fi settings across all configured access points, facilitating unauthorized privilege escalation.

Mitigation and Prevention

Discover the measures to mitigate and prevent the exploitation of CVE-2021-0602.

Immediate Steps to Take

Android users are advised to apply relevant security patches promptly to address this vulnerability.
Restricting guest user access to critical network settings can help mitigate the risk of exploitation.

Long-Term Security Practices

Regularly update Android devices to the latest software versions to ensure the inclusion of security patches and enhancements.
Educate users about the risks associated with unauthorized Wi-Fi configuration changes.

Patching and Updates

Android has released security patches addressing CVE-2021-0602. Stay informed about the latest updates and security advisories from Android to safeguard your devices against potential threats.