CVE-2024-43769 in Android
Summary
by MITRE • 01/03/2025
In isPackageDeviceAdmin of PackageManagerService.java, there is a possible edge case which could prevent the uninstallation of CloudDpc due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
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Analysis
by VulDB Data Team • 01/04/2025
The vulnerability identified as CVE-2024-43769 resides within the Android system's PackageManagerService component, specifically in the isPackageDeviceAdmin method implementation. This flaw represents a critical logic error that affects the device administration package handling mechanism, creating an edge case scenario where legitimate uninstallation processes become blocked. The vulnerability is classified under CWE-284 which pertains to improper access control, specifically in the context of device administration permissions. The issue manifests when the system attempts to verify whether a package is registered as a device administrator, and the flawed logic prevents proper cleanup of CloudDpc package references during uninstallation procedures.
The technical implementation flaw occurs within the PackageManagerService.java file where the isPackageDeviceAdmin method fails to properly account for all possible states of device administration registration. This edge case creates a condition where the system maintains references to CloudDpc package metadata even after the uninstallation process has begun, effectively blocking complete removal of the application. The vulnerability operates at the system level without requiring any user interaction or additional privileges, making it particularly dangerous as it can be exploited by any local process with basic system access. The attack vector leverages the Android security model's trust in system-level components, where the flawed logic creates a persistent state that prevents proper package management operations.
The operational impact of this vulnerability extends beyond simple package management failures, creating potential for local privilege escalation attacks that could allow malicious applications to maintain persistent access to device administration capabilities. When CloudDpc remains partially installed or in a corrupted state, it can provide attackers with continued access to sensitive device functions that should be completely removed upon uninstallation. This vulnerability directly relates to the ATT&CK technique T1068 which covers 'Local Privilege Escalation' and specifically targets the 'Exploitation for Privilege Escalation' sub-technique. The persistent nature of the flaw means that once exploited, it can provide attackers with continued access to device management functions that should be fully revoked during normal uninstallation procedures.
Mitigation strategies for CVE-2024-43769 should focus on patching the specific logic error within the PackageManagerService implementation, ensuring that all device administration references are properly cleared during package uninstallation. System administrators should implement monitoring for unusual package management activities and ensure that device administration policies are regularly reviewed and validated. The fix requires careful attention to the edge case handling within the isPackageDeviceAdmin method, ensuring that all possible states of device administration registration are properly accounted for during uninstallation processes. Organizations should also consider implementing additional security controls such as regular device audits and monitoring for unauthorized device administration package installations. The vulnerability demonstrates the importance of thorough edge case testing in security-critical system components and highlights the need for comprehensive validation of package management operations to prevent persistent access control issues.