CVE-2021-0988 : Security Advisory and Response
Learn about CVE-2021-0988, a vulnerability in Android-12 that allows unauthorized app status detection, leading to local information disclosure without user interaction. Find mitigation steps here.
A vulnerability has been identified in Android-12 that allows an attacker to determine whether an app is installed without the necessary permissions, potentially leading to local information disclosure. This CVE poses a risk of exposing sensitive data without requiring user interaction.
Understanding CVE-2021-0988
This section provides insights into the nature and impact of CVE-2021-0988.
What is CVE-2021-0988?
The CVE-2021-0988 vulnerability exists in the ActivityClientController.java file, specifically in the functions getLaunchedFromUid and getLaunchedFromPackage. It enables unauthorized access to app installation status, bypassing permission restrictions.
The Impact of CVE-2021-0988
Exploitation of CVE-2021-0988 could result in local information disclosure without the need for additional execution privileges. Attackers can retrieve sensitive data without user consent, posing a significant threat to data privacy.
Technical Details of CVE-2021-0988
In this section, we delve into the technical aspects of CVE-2021-0988 to understand its implications further.
Vulnerability Description
The vulnerability arises from a side-channel information disclosure in ActivityClientController.java, allowing unauthorized app status detection without proper permissions, facilitating data exposure.
Affected Systems and Versions
The impacted system is Android-12, specifically vulnerable in the getLaunchedFromUid and getLaunchedFromPackage functions of ActivityClientController.java.
Exploitation Mechanism
CVE-2021-0988 can be exploited by malicious actors to ascertain app installation status via unauthorized means, leveraging a side-channel data leakage method.
Mitigation and Prevention
To safeguard systems from the risks associated with CVE-2021-0988, proactive measures and security practices are imperative.
Immediate Steps to Take
- Update Android devices running Android-12 to the latest security patches to mitigate the vulnerability effectively.
Long-Term Security Practices
- Regularly monitor security bulletins and updates from Google for Android security patches.
- Implement strict app permission controls to limit unauthorized access to sensitive data.
Patching and Updates
- Stay informed about the official Android security bulletins and apply recommended patches promptly to address known vulnerabilities.