CVE-2024-40658 in Android
Summary
by MITRE • 09/11/2024
In getConfig of SoftVideoDecoderOMXComponent.cpp, there is a possible out of bounds write due to a heap buffer overflow. 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 • 12/18/2024
The vulnerability identified as CVE-2024-40658 resides within the SoftVideoDecoderOMXComponent.cpp file, specifically in the getConfig function implementation. This issue represents a critical heap buffer overflow condition that occurs when the system attempts to write data beyond the allocated memory boundaries of a heap buffer. The flaw manifests during the configuration retrieval process where the application fails to properly validate input parameters or enforce proper bounds checking before performing memory operations. Such buffer overflow conditions are particularly dangerous because they can corrupt adjacent memory locations and potentially allow malicious code execution or system instability.
The technical nature of this vulnerability aligns with CWE-121, which describes heap-based buffer overflow conditions where insufficient bounds checking allows writing beyond allocated buffer limits. This specific implementation flaw occurs in the multimedia framework component responsible for video decoding operations, suggesting that the vulnerability impacts the underlying OMX (OpenMAX) component architecture used for multimedia processing in Android systems. The vulnerability's exploitation does not require user interaction, making it particularly concerning as it can be triggered automatically during normal system operation or media processing activities. The absence of user interaction requirements places this vulnerability in the category of fully automated exploits that can be leveraged for privilege escalation without any additional attack surface.
The operational impact of CVE-2024-40658 extends to potential local privilege escalation scenarios where an attacker with minimal privileges could elevate their access level within the system. This occurs because the buffer overflow allows for memory corruption that can be manipulated to overwrite critical system structures or function pointers, potentially enabling code execution with elevated privileges. The vulnerability affects the Android multimedia framework and could be exploited through various media processing pathways including video playback, streaming, or any application that utilizes the OMX component for video decoding operations. The exploitation chain typically involves triggering the vulnerable getConfig function with maliciously crafted parameters that cause the heap buffer overflow to occur in a controlled manner.
Security mitigations for this vulnerability should focus on implementing comprehensive bounds checking mechanisms within the getConfig function and related buffer management operations. The recommended approach includes enforcing strict input validation for all parameters passed to the configuration retrieval functions, implementing proper memory allocation size calculations, and utilizing safe memory manipulation functions that prevent buffer overflows. Additionally, the system should employ modern exploit mitigation techniques such as stack canaries, address space layout randomization, and control flow integrity mechanisms to prevent successful exploitation attempts. The vulnerability's classification under the ATT&CK framework would place it in the privilege escalation category under technique T1068, where adversaries leverage system vulnerabilities to gain higher privileges. Organizations should prioritize patching affected systems and implementing monitoring for anomalous memory access patterns that could indicate exploitation attempts. The vulnerability demonstrates the critical importance of secure coding practices in system-level components and highlights the need for comprehensive code reviews and static analysis of multimedia frameworks to prevent similar issues from arising in future implementations.