CVE-2024-25992 in Android
Summary
by MITRE • 03/11/2024
In tmu_tz_control of tmu.c, there is a possible out of bounds read due to a missing bounds 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 • 08/28/2024
The vulnerability identified as CVE-2024-25992 resides within the tmu_tz_control function in the tmu.c source file, representing a critical security flaw that undermines system integrity. This issue manifests as a potential out of bounds read condition that occurs when a crucial bounds check is absent from the code implementation. The flaw exists within a kernel-level component that handles trusted zone control operations, making it particularly dangerous as it operates at a privileged system level where security boundaries are most critical.
The technical nature of this vulnerability stems from improper input validation within the tmu_tz_control function where the code fails to verify array indices or buffer boundaries before accessing memory locations. This missing bounds check creates a scenario where an attacker can manipulate input parameters to cause the system to read memory beyond its intended boundaries. The vulnerability operates without requiring any user interaction or additional execution privileges, making it particularly concerning as it can be exploited automatically by any local process with minimal prerequisites. According to CWE classification, this represents a CWE-129: Improper Validation of Array Index vulnerability, where the system fails to validate that array indices are within acceptable range limits.
The operational impact of CVE-2024-25992 extends beyond simple memory access violations as it enables local privilege escalation, allowing a low-privileged user or process to gain elevated system permissions. This privilege escalation capability transforms what might initially appear as a memory corruption issue into a significant security threat that could compromise entire system operations. The vulnerability's exploitation does not require user interaction, which means it can be automatically triggered by malicious code running in the same system environment, potentially leading to complete system compromise. The absence of additional execution privileges requirements makes this vulnerability particularly attractive to attackers seeking to establish persistent access or escalate their privileges within a compromised system.
Mitigation strategies for CVE-2024-25992 should focus on implementing proper bounds checking within the tmu_tz_control function and surrounding code sections. System administrators should prioritize applying vendor-provided patches or updates that address the specific bounds validation issue in the tmu.c file. The fix should include comprehensive input validation that verifies all array indices and buffer access parameters before any memory operations occur. Organizations should also implement runtime monitoring to detect anomalous memory access patterns that might indicate exploitation attempts. From an ATT&CK framework perspective, this vulnerability relates to T1068: Local Privilege Escalation and T1547.001: Registry Run Keys / Startup Folder, as successful exploitation could enable attackers to establish persistence mechanisms. Additionally, implementing principle of least privilege configurations and regular security auditing of kernel modules can help reduce the attack surface and mitigate potential exploitation scenarios.