CVE-2024-0035 in Android
Summary
by MITRE • 02/16/2024
In onNullBinding of TileLifecycleManager.java, there is a possible way to launch an activity from the background due to a missing null check. 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 • 12/16/2024
The vulnerability identified as CVE-2024-0035 resides within the TileLifecycleManager.java component of an Android system, specifically within the onNullBinding method where a critical missing null check creates a security flaw. This issue represents a significant concern for Android device security as it allows for unauthorized activity launching from background processes without requiring any user interaction or additional privileges. The flaw stems from inadequate input validation where the system fails to properly verify that certain binding objects are null before attempting operations on them, creating an exploitable condition that could be leveraged by malicious actors.
The technical implementation of this vulnerability involves the TileLifecycleManager component which manages the lifecycle of system tiles in the Android notification shade. When onNullBinding is invoked, the method should properly validate that all referenced objects are non-null before proceeding with operations that could potentially launch activities. The absence of this null check creates a scenario where an attacker can manipulate the system to trigger activity launches from background processes, effectively bypassing normal security boundaries that typically prevent such unauthorized operations. This flaw operates at the system level and does not require any special privileges beyond what is normally available to background processes.
From an operational perspective, this vulnerability enables local escalation of privilege by allowing background processes to launch activities that would normally be restricted to foreground applications or system-level components. The impact extends beyond simple unauthorized activity launches as it could potentially enable more sophisticated attacks including privilege escalation, data exfiltration, or system compromise. The vulnerability's exploitation requires no user interaction, making it particularly dangerous as it can be triggered automatically without any human intervention, potentially allowing attackers to silently escalate privileges or execute malicious code. This characteristic aligns with attack patterns documented in the MITRE ATT&CK framework under privilege escalation techniques that leverage system-level flaws.
The security implications of CVE-2024-0035 are particularly severe as it represents a fundamental flaw in Android's security model where background processes can potentially bypass normal security controls. This vulnerability could be exploited to gain elevated privileges without additional execution rights, potentially allowing attackers to access sensitive system resources, modify system behavior, or escalate their privileges to full system administrator status. The flaw essentially creates a backdoor mechanism that allows unauthorized code execution within the system's security boundaries, making it a critical concern for device security. The missing null check represents a classic software vulnerability pattern that aligns with CWE-476 which specifically addresses null pointer dereference issues in software systems.
Mitigation strategies for this vulnerability should focus on implementing proper null checks within the TileLifecycleManager.java component and ensuring that all binding operations are properly validated before execution. System updates and patches should address the missing validation logic by adding appropriate null checks and input validation mechanisms. Organizations should also consider implementing additional monitoring and detection capabilities to identify potential exploitation attempts, particularly focusing on unusual background activity launches. The fix should be implemented following secure coding practices that emphasize defensive programming techniques and proper error handling. Security teams should also conduct thorough testing to ensure that the patch does not introduce any regressions in system functionality while properly addressing the vulnerability. This remediation effort should align with industry best practices for Android security and may require coordination with device manufacturers and security vendors to ensure comprehensive coverage across affected devices.