CVE-2024-27231 in Android
Summary
by MITRE • 04/05/2024
In tmu_get_tr_stats of tmu.c, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
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Analysis
by VulDB Data Team • 06/18/2025
The vulnerability identified as CVE-2024-27231 represents a critical out-of-bounds read flaw within the tmu_get_tr_stats function of the tmu.c source file. This issue manifests as a missing bounds check that allows attackers to access memory locations beyond the intended array boundaries. The flaw exists within kernel-level code responsible for retrieving traffic statistics from a traffic management unit, making it particularly concerning for system security and stability. The absence of proper input validation and boundary checking creates an exploitable condition that can be leveraged by local attackers to extract sensitive information from kernel memory regions. The vulnerability does not require any special privileges or user interaction for exploitation, which significantly increases its attack surface and potential impact. This type of flaw falls under the CWE-129 category of Improper Validation of Array Index, which is classified as a common weakness in software development practices. The ATT&CK framework would categorize this vulnerability under T1068 - Exploitation for Privilege Escalation, as it enables local information disclosure that could potentially lead to further exploitation opportunities.
The technical implementation of this vulnerability stems from insufficient validation of input parameters within the tmu_get_tr_stats function. When processing traffic statistics requests, the function fails to verify that array indices remain within acceptable bounds before accessing memory locations. This oversight allows for arbitrary memory reads that can expose kernel data structures, configuration information, and potentially sensitive system details. The lack of bounds checking means that malicious input can cause the program to read beyond allocated memory regions, potentially exposing kernel memory contents to unauthorized access. The vulnerability's exploitation requires no additional privileges beyond normal user access, as it operates within the context of existing kernel functionality. This characteristic makes it particularly dangerous because it can be exploited by any local user without requiring elevated permissions or specialized tools. The flaw demonstrates a classic buffer over-read condition that can result in information disclosure, making it a significant concern for system administrators and security professionals responsible for maintaining kernel security.
The operational impact of CVE-2024-27231 extends beyond simple information disclosure, as it can potentially expose sensitive kernel data that may reveal system configuration details, memory layouts, or other confidential information. Local attackers can leverage this vulnerability to gather intelligence about the system's internal state, which could aid in planning more sophisticated attacks. The vulnerability's presence in kernel code means that successful exploitation could lead to further privilege escalation attempts or provide attackers with knowledge necessary to exploit additional vulnerabilities. The lack of user interaction requirements makes this vulnerability particularly concerning for environments where local access is common or difficult to control. System administrators should be particularly vigilant in environments where multiple users have local access to systems, as this vulnerability can be exploited without any special privileges or user engagement. The flaw represents a significant weakness in the kernel's memory management and validation processes, highlighting the importance of proper bounds checking in system-level code. The vulnerability's classification under CWE-129 emphasizes the need for robust input validation and boundary checking mechanisms in all software components, particularly those operating at privileged system levels.
Mitigation strategies for CVE-2024-27231 should focus on implementing proper bounds checking within the tmu_get_tr_stats function and ensuring all array accesses are validated against legitimate boundaries. System administrators should prioritize applying vendor-provided patches or updates that address this specific vulnerability, as these fixes typically include proper input validation and boundary checks. The remediation process should involve thorough code review of similar functions within the same codebase to identify and address potential similar vulnerabilities. Organizations should implement monitoring solutions to detect unusual memory access patterns or information disclosure attempts that might indicate exploitation of this vulnerability. Regular security assessments and vulnerability scanning should include checks for similar out-of-bounds read conditions in kernel modules and system components. The fix should be validated through comprehensive testing to ensure that legitimate functionality remains intact while preventing the exploitable condition. Additionally, implementing kernel hardening measures such as stack canaries, address space layout randomization, and other exploit mitigation techniques can provide additional protection against potential exploitation attempts. The vulnerability serves as a reminder of the critical importance of input validation and bounds checking in kernel-level code, as these protections are fundamental to maintaining system security and preventing information disclosure attacks.