CVE-2021-0989 : Exploit Details and Defense Strategies

A vulnerability has been identified in Android-12 that could allow an attacker to determine whether an app is installed without the necessary permissions. This could result in local information disclosure without requiring additional execution privileges. User interaction is not required for exploitation.

Understanding CVE-2021-0989

This section delves into the details of CVE-2021-0989, highlighting its impact, technical aspects, and mitigation strategies.

What is CVE-2021-0989?

The vulnerability, located in hasManageOngoingCallsPermission of TelecomServiceImpl.java, enables malicious actors to discern app installations without query permissions. As a consequence, it facilitates local information disclosure.

The Impact of CVE-2021-0989

The exploit potentially leads to local information exposure with no need for user interaction or extra execution privileges, posing a significant risk to Android-12 users.

Technical Details of CVE-2021-0989

This section provides a deeper dive into the technical aspects of CVE-2021-0989, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability allows adversaries to determine app installation status without the requisite query permissions, leading to a potential information disclosure risk.

Affected Systems and Versions

Android-12 is the affected product version, making devices running this OS version vulnerable to the disclosed issue.

Exploitation Mechanism

By exploiting the weakness in hasManageOngoingCallsPermission of TelecomServiceImpl.java, threat actors can discern app installations without the necessary query permissions, paving the way for local information disclosure.

Mitigation and Prevention

In response to CVE-2021-0989, it is crucial for users and organizations to take immediate steps to safeguard their systems and data, in addition to adopting long-term security practices and staying updated on patches and fixes.

Immediate Steps to Take

Users are advised to apply relevant security patches promptly, monitor for official updates from Android, and exercise caution when installing new apps or granting permissions.

Long-Term Security Practices

Implement robust cybersecurity measures such as regular system updates, security audits, and user awareness programs to mitigate the risk of information disclosure and other potential threats.

Patching and Updates

Stay informed about security bulletins and patches released by Google for Android-12 to address CVE-2021-0989 and other vulnerabilities effectively.