CVE-2024-31313 in Android
Summary
by MITRE • 07/10/2024
In availableToWriteBytes of MessageQueueBase.h, there is a possible out of bounds write due to an incorrect 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 • 12/17/2024
The vulnerability identified as CVE-2024-31313 resides within the MessageQueueBase.h header file, specifically in the availableToWriteBytes function implementation. This flaw represents a critical security weakness that stems from an inadequate bounds checking mechanism during memory operations. The improper validation allows for potential buffer overflow conditions that can be exploited to execute arbitrary code with elevated privileges. The vulnerability's severity is compounded by the fact that it requires no user interaction for exploitation, making it particularly dangerous in automated attack scenarios.
The technical root cause of this vulnerability can be categorized under CWE-129, which addresses insufficient bounds checking, and more specifically aligns with CWE-787, representing out-of-bounds write conditions. The flaw manifests when the availableToWriteBytes function performs memory operations without properly validating the boundaries of the target buffer, creating an opportunity for attackers to write data beyond the allocated memory space. This type of vulnerability falls under the ATT&CK technique T1068, which describes exploits for privilege escalation, specifically targeting local privilege escalation through memory corruption vulnerabilities. The implementation error likely occurs during the calculation or validation of buffer sizes, where the bounds checking logic fails to account for all possible edge cases or overflow conditions.
The operational impact of CVE-2024-31313 extends beyond simple memory corruption, as it enables local privilege escalation without requiring any additional execution privileges or user interaction. This means that any local user with minimal system access can potentially leverage this vulnerability to gain administrative or root-level privileges. The exploitability of this condition is particularly concerning because it operates entirely within the system's memory management mechanisms, making it difficult to detect through traditional network-based monitoring. Attackers can utilize this vulnerability to establish persistent access, escalate their privileges, and potentially move laterally within a compromised system, as the vulnerability provides a direct path to elevated system privileges.
Mitigation strategies for CVE-2024-31313 should focus on immediate code-level fixes that address the bounds checking implementation within the availableToWriteBytes function. The most effective approach involves implementing robust input validation that thoroughly checks all buffer boundaries before any write operations occur, ensuring that the calculated buffer sizes cannot exceed the allocated memory space. Security patches should include comprehensive boundary validation that accounts for all potential integer overflow conditions and edge cases in the memory allocation calculations. Organizations should also implement runtime protections such as address space layout randomization, stack canaries, and data execution prevention mechanisms to reduce the effectiveness of potential exploitation attempts. Additionally, system administrators should monitor for unusual privilege escalation activities and implement strict access controls to limit the potential damage that could result from successful exploitation of this vulnerability.