CVE-2021-0978 : Security Advisory and Response

A detailed article outlining the CVE-2021-0978 vulnerability in Android relating to information disclosure.

Understanding CVE-2021-0978

This section delves into the nature of the CVE-2021-0978 vulnerability in Android.

What is CVE-2021-0978?

CVE-2021-0978 is identified as a vulnerability in the DeviceIdentifiersPolicyService.java file in Android. It allows an unauthorized way to ascertain if an app is installed, leading to information disclosure without query permissions.

The Impact of CVE-2021-0978

The vulnerability could result in local information disclosure without requiring any additional execution privileges. No user interaction is necessary for exploitation.

Technical Details of CVE-2021-0978

This section explores the technical aspects of CVE-2021-0978.

Vulnerability Description

The vulnerability exists in the getSerialForPackage function of DeviceIdentifiersPolicyService.java, facilitating unauthorized access to app installation status.

Affected Systems and Versions

The affected product is Android, specifically version Android-12.

Exploitation Mechanism

Exploitation of this vulnerability does not mandate user interaction and can lead to local information disclosure.

Mitigation and Prevention

Insights into mitigating and preventing the CVE-2021-0978 vulnerability.

Immediate Steps to Take

Users are advised to apply relevant security patches and updates promptly to mitigate the risk of information disclosure.

Long-Term Security Practices

Implementing robust permission controls and regularly updating systems can enhance long-term security against such vulnerabilities.

Patching and Updates

Stay informed about security advisories from Android providers and apply all relevant patches and updates to secure the system.