CVE-2021-1019 : Exploit Details and Defense Strategies
Learn about CVE-2021-1019, a critical vulnerability in Android-12 that could lead to an elevation of privilege due to a user consent dialog issue. Find out the impact, affected systems, and mitigation steps.
A vulnerability identified as CVE-2021-1019 in Android-12 can lead to an elevation of privilege due to a misleading user consent dialog in the snoozeNotification of NotificationListenerService.java. This CVE was published on December 15, 2021 under the assigner organization Google Android.
Understanding CVE-2021-1019
This section will discuss what CVE-2021-1019 is, its impact, technical details, and mitigation strategies.
What is CVE-2021-1019?
CVE-2021-1019 is a vulnerability in Android-12 that could potentially result in a local escalation of privilege, requiring user interaction for exploitation.
The Impact of CVE-2021-1019
The vulnerability allows for a permission confusion issue, which, coupled with the misleading user consent dialog, can enable attackers to execute privileged actions requiring user permissions.
Technical Details of CVE-2021-1019
Let's delve deeper into the technical aspects of this CVE.
Vulnerability Description
The vulnerability arises from the snoozeNotification function in NotificationListenerService.java, creating potential permission confusion and escalating user privileges.
Affected Systems and Versions
The issue affects devices running Android-12, potentially exposing them to exploitation through user consent dialog manipulation.
Exploitation Mechanism
Attackers can leverage the misleading user consent dialog to deceive users into granting permissions inadvertently, leading to privilege escalation.
Mitigation and Prevention
Protecting systems from CVE-2021-1019 requires immediate action and long-term security measures.
Immediate Steps to Take
Users are advised to be cautious while interacting with permission dialogs, avoiding granting unnecessary privileges.
Long-Term Security Practices
Developers should implement secure dialog practices and user permission flows to prevent similar exploits in the future.
Patching and Updates
Regularly update systems and apply security patches provided by Google for mitigating CVE-2021-1019.