CVE-2021-0990 : What You Need to Know

This CVE-2021-0990 vulnerability affects Android devices running version Android-12. The vulnerability allows an attacker to determine whether an app is installed without requiring specific permissions, leading to local information disclosure. No user interaction is necessary for exploitation.

Understanding CVE-2021-0990

CVE-2021-0990 is classified as an information disclosure vulnerability affecting Android devices on version Android-12.

What is CVE-2021-0990?

The vulnerability resides in the getDeviceId function of PhoneSubInfoController.java, enabling unauthorized access to app installation status without the need for query permissions.

The Impact of CVE-2021-0990

This vulnerability could potentially expose sensitive information locally without the requirement of additional execution privileges.

Technical Details of CVE-2021-0990

This section dives deeper into the technical aspects of the CVE, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The getDeviceId function in PhoneSubInfoController.java provides a side channel for determining app installation status, leading to potential information disclosure.

Affected Systems and Versions

Android devices running version Android-12 are impacted by this vulnerability.

Exploitation Mechanism

The vulnerability allows threat actors to discern app installation status without the need for explicit permissions, facilitating local information disclosure.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-0990, immediate actions and long-term security practices are crucial.

Immediate Steps to Take

Users are advised to stay informed about security bulletins and updates provided by Android to address this vulnerability.

Long-Term Security Practices

Implementing robust security measures, such as keeping devices up to date and following secure coding practices, can help prevent similar vulnerabilities in the future.

Patching and Updates

It is essential for Android users to install security patches and updates promptly to safeguard their devices against potential exploitation of CVE-2021-0990.