CVE-2024-27220 in Android
Summary
by MITRE • 03/11/2024
In lpm_req_handler of TBD, there is a possible out of bounds memory access 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 • 08/26/2024
The vulnerability identified as CVE-2024-27220 represents a critical out-of-bounds memory access flaw within the lpm_req_handler component of an unspecified system. This issue stems from the absence of proper bounds checking mechanisms that should validate memory access operations. The flaw exists in the logical power management request handler which processes system power state transitions and related operational commands. Such a component typically operates with elevated privileges to manage system resources and power states, making the potential impact of this vulnerability particularly severe.
The technical nature of this vulnerability places it squarely within the domain of CWE-129, which addresses insufficient bounds checking in memory operations. The missing bounds check allows an attacker to potentially access memory locations beyond the intended buffer boundaries, creating opportunities for arbitrary code execution or privilege escalation. The vulnerability specifically affects the lpm_req_handler function which likely manages power management requests from various system components or user processes. This function appears to process incoming requests without validating the parameters against expected ranges or buffer limits, enabling attackers to craft malicious inputs that trigger the out-of-bounds access condition.
The operational impact of CVE-2024-27220 extends beyond simple memory corruption as it enables local privilege escalation without requiring additional execution privileges or user interaction. This means that any local user or process with access to the system can exploit this vulnerability to gain elevated privileges, potentially allowing full system compromise. The lack of user interaction requirement significantly increases the exploitability of this vulnerability, as it can be triggered automatically without the need for social engineering or user deception. The vulnerability affects system security through the compromise of the power management subsystem, which typically operates with high privileges and has direct access to critical system resources and hardware components.
Mitigation strategies for this vulnerability should focus on implementing proper bounds checking mechanisms within the lpm_req_handler function and surrounding code. The most effective approach involves adding comprehensive input validation and boundary checks before any memory access operations occur. Security patches should enforce strict parameter validation and implement defensive programming practices to prevent unauthorized memory access. Organizations should prioritize immediate deployment of vendor-provided patches and consider implementing runtime protections such as address space layout randomization and stack canaries. Additionally, system administrators should monitor for anomalous power management requests and implement logging mechanisms to detect potential exploitation attempts. The ATT&CK framework categorizes this vulnerability under privilege escalation techniques, specifically targeting the use of software vulnerabilities to gain elevated system privileges without requiring additional attack vectors or user interaction.