CVE-2021-0686 Explained : Impact and Mitigation
Discover the impact of CVE-2021-0686, an Android vulnerability that allows unauthorized access to default SMS app information on affected versions. Learn mitigation strategies here.
A vulnerability has been identified in Android that could allow a malicious actor to access information about the default SMS app of a different device user without the necessary permission check. This could result in local information disclosure with no additional privileges required for exploitation.
Understanding CVE-2021-0686
This section provides insights into the nature and impact of the CVE-2021-0686 vulnerability.
What is CVE-2021-0686?
The vulnerability exists in the getDefaultSmsPackage function of RoleManagerService.java in Android. It allows unauthorized access to details of the default SMS app on another user's device.
The Impact of CVE-2021-0686
The vulnerability could lead to local information disclosure without any user interaction, potentially exposing sensitive data to threat actors.
Technical Details of CVE-2021-0686
Explore the specific technical aspects of the CVE-2021-0686 vulnerability.
Vulnerability Description
The flaw arises from a missing permission check in the getDefaultSmsPackage function, enabling unauthorized retrieval of default SMS app information.
Affected Systems and Versions
Android versions 10 and 11 are impacted by this vulnerability, allowing attackers to exploit the flaw on a wide range of devices.
Exploitation Mechanism
By leveraging the vulnerability in RoleManagerService.java, threat actors can access sensitive information about the default SMS app without requiring additional execution privileges.
Mitigation and Prevention
Learn about the strategies to mitigate the risks associated with CVE-2021-0686.
Immediate Steps to Take
Users are advised to apply security patches promptly to address the vulnerability and prevent potential information disclosure.
Long-Term Security Practices
Implement robust security measures such as regular security audits, user permission checks, and secure coding practices to enhance overall system security.
Patching and Updates
Stay informed about security bulletins and updates from Android to deploy patches that address CVE-2021-0686 and other known vulnerabilities.