CVE-2024-27211 in Android
Summary
by MITRE • 03/11/2024
In AtiHandleAPOMsgType of ati_Main.c, there is a possible OOB write 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 • 08/06/2024
The vulnerability identified as CVE-2024-27211 resides within the AtiHandleAPOMsgType function in the ati_Main.c source file, representing a critical out-of-bounds write condition that fundamentally compromises system security. This flaw manifests due to the absence of a null termination check during message processing, creating a scenario where malicious data can overwrite adjacent memory regions without proper boundary validation. The vulnerability operates at the kernel level within graphics driver components, specifically targeting the Advanced Power Optimization Messaging system that manages power states and performance configurations for ATI graphics hardware.
The technical implementation of this vulnerability stems from improper input validation within the message handling pipeline where the system fails to verify that incoming data terminates properly with a null character before proceeding with memory operations. This missing null check creates a predictable memory corruption pattern that allows attackers to manipulate adjacent memory locations through carefully crafted input sequences. The flaw specifically affects the power management subsystem of ATI graphics drivers, making it particularly dangerous as it operates with elevated privileges required for hardware configuration changes. According to CWE classification, this represents a CWE-787 Out-of-bounds Write vulnerability, which directly enables privilege escalation through memory corruption techniques.
The operational impact of CVE-2024-27211 extends beyond simple memory corruption to enable local privilege escalation without requiring any additional execution privileges or user interaction for exploitation. This means that any local user with access to the system can leverage this vulnerability to gain elevated privileges, potentially allowing them to execute arbitrary code with kernel-level permissions. The attack vector is particularly concerning because it requires no user interaction and can be triggered automatically during normal system operation when graphics power management messages are processed. This vulnerability directly maps to ATT&CK technique T1068, which covers the exploitation of local privilege escalation vulnerabilities, and T1547.001, covering registry run keys and startup folder modifications that could result from successful exploitation.
Mitigation strategies for CVE-2024-27211 should prioritize immediate patch deployment from the vendor, as this vulnerability represents a critical security risk that can be exploited without user interaction. System administrators should implement additional monitoring for abnormal power management message processing and memory access patterns that could indicate exploitation attempts. The fix typically involves implementing proper null termination checks within the AtiHandleAPOMsgType function, ensuring that all input data is validated before memory operations are performed. Additionally, system hardening measures such as kernel address space layout randomization and stack canaries should be enabled to provide additional protection layers. Organizations should also consider implementing runtime application control measures and monitoring for unauthorized privilege escalation attempts, as the vulnerability could potentially be chained with other exploits to achieve more sophisticated attack objectives.