CVE-2022-20331 in Android
Summary
by MITRE • 08/12/2022
In the Framework, there is a possible way to enable a work profile without user consent due to a tapjacking/overlay attack. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-13Android ID: A-181785557
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Analysis
by VulDB Data Team • 09/11/2022
This vulnerability exists within the Android framework where a malicious application can potentially establish a work profile without user consent through a tapjacking or overlay attack vector. The flaw resides in the permission handling mechanism that governs work profile creation and management, allowing an attacker to exploit the user interface overlay capabilities to deceive users into granting unauthorized access to corporate work profiles. The vulnerability specifically affects Android 13 and is identified by the Android ID A-181785557, representing a significant security risk in enterprise mobile device management environments.
The technical implementation of this vulnerability leverages the Android system's trust model for user consent prompts and overlay permissions. When a user encounters a legitimate prompt requesting work profile setup, an attacker can overlay malicious content that intercepts touch events and manipulates the user's interaction with the consent interface. This tapjacking attack exploits the system's failure to properly validate the authenticity of overlay content during critical user interaction moments, particularly around work profile provisioning. The vulnerability operates at the system-level framework components where user consent is processed and validated, making it particularly dangerous as it bypasses normal security boundaries.
The operational impact of this vulnerability extends beyond simple privilege escalation to encompass complete corporate device compromise. An attacker who successfully exploits this vulnerability can gain local elevation of privilege without requiring additional execution privileges, effectively allowing them to operate with the elevated permissions of the work profile user. This creates a persistent threat vector that can be used for data exfiltration, credential theft, and further network reconnaissance within enterprise environments. The vulnerability particularly affects organizations that rely on Android Enterprise for device management, as it undermines the fundamental security model that separates personal and corporate data through work profiles. This attack scenario aligns with ATT&CK technique T1068 which covers local privilege escalation through system-level vulnerabilities, and CWE-668 which addresses the exposure of a resource through an access control mechanism.
Mitigation strategies for this vulnerability require both system-level and application-level interventions. Android system updates should prioritize patching the framework components that handle work profile consent prompts and overlay permissions. Organizations should implement strict application vetting processes to prevent malicious apps from gaining the necessary overlay permissions. Security researchers recommend enabling additional verification mechanisms for work profile creation, such as requiring explicit user confirmation through biometric authentication or secondary verification methods. Network administrators should monitor for suspicious overlay activity and implement mobile device management policies that restrict overlay permissions for applications with elevated privileges. The vulnerability demonstrates the critical importance of user interface security in mobile operating systems and highlights the need for robust input validation and authentication mechanisms at all interaction points where sensitive operations are performed.