CVE-2022-20218 : Security Advisory and Response
Discover how CVE-2022-20218 impacts Android-12 and Android-12L devices, allowing unauthorized permission retention and local privilege escalation. Learn mitigation steps and the importance of patching.
Android devices running Android-12 and Android-12L are impacted by a vulnerability that allows a user to gain and retain permissions without user consent, leading to local privilege escalation without additional execution privileges. User interaction is required for exploitation.
Understanding CVE-2022-20218
This CVE identifies a logic error in the PermissionController of Android-12 and Android-12L, enabling unauthorized permission retention by users.
What is CVE-2022-20218?
CVE-2022-20218 highlights a security flaw in Android's PermissionController that permits users to acquire and hold permissions without explicit consent, potentially escalating their privileges locally.
The Impact of CVE-2022-20218
The vulnerability poses a risk of local privilege escalation, allowing users to gain permissions and escalate their privileges on affected Android devices without requiring additional execution privileges.
Technical Details of CVE-2022-20218
Vulnerability Description
The flaw in PermissionController allows users to obtain and maintain permissions without proper consent, creating a loophole for unauthorized privilege escalation.
Affected Systems and Versions
Android-12 and Android-12L are confirmed to be impacted by this vulnerability, leaving devices running these versions susceptible to the exploit.
Exploitation Mechanism
Exploiting CVE-2022-20218 involves leveraging the logic error in PermissionController to gain and retain permissions without the user's explicit authorization, resulting in local privilege escalation.
Mitigation and Prevention
Immediate Steps to Take
Users are advised to exercise caution when granting permissions and be mindful of any unexpected permission requests to mitigate the risk of exploitation.
Long-Term Security Practices
To enhance device security in the long term, users should follow best practices such as regularly updating their Android devices and being vigilant about permission management.
Patching and Updates
It is essential for users to apply security patches and updates provided by Android to address CVE-2022-20218 and other potential vulnerabilities.