CVE-2024-25990 in Android
Summary
by MITRE • 03/11/2024
In pktproc_perftest_gen_rx_packet_sktbuf_mode of link_rx_pktproc.c, there is a possible out of bounds write due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
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Analysis
by VulDB Data Team • 03/11/2024
The vulnerability identified as CVE-2024-25990 resides within the pktproc_perftest_gen_rx_packet_sktbuf_mode function in the link_rx_pktproc.c source file, representing a critical out-of-bounds write flaw that stems from a race condition inherent in the network packet processing subsystem. This particular implementation flaw manifests when the system handles packet reception in socket buffer mode, creating a scenario where concurrent access to shared memory resources can result in memory corruption beyond the intended buffer boundaries. The race condition occurs during the processing of incoming network packets, where multiple threads or processes may simultaneously attempt to modify the same memory locations without proper synchronization mechanisms, leading to unpredictable memory corruption patterns that can be exploited by malicious actors.
The technical exploitation of this vulnerability requires local system execution privileges, indicating that an attacker must already have access to the target system to leverage this flaw. However, the absence of user interaction requirements makes this particularly dangerous as it can be automated and triggered without any direct user involvement or deception. The out-of-bounds write vulnerability specifically affects the packet processing pipeline, where the system's network stack fails to properly validate array indices or buffer limits when handling received packets in socket buffer mode. This flaw falls under the CWE-119 category of "Improper Access to Memory Locations" and more specifically aligns with CWE-367, "Time-of-Check to Time-of-Use (TOCTOU) Race Condition," as the race condition occurs during the processing of packet data. The vulnerability's exploitation can potentially lead to privilege escalation, allowing an attacker to gain elevated system privileges and execute arbitrary code with the highest level of system permissions.
The operational impact of CVE-2024-25990 extends beyond simple memory corruption, as it represents a significant threat to system integrity and stability. When exploited successfully, this vulnerability can enable attackers to execute malicious code with system-level privileges, potentially allowing them to install backdoors, modify critical system files, or establish persistent access to the compromised system. The network packet processing functionality affected by this vulnerability is fundamental to system operation, making the exploitation consequences severe and far-reaching. Attackers can leverage this flaw to manipulate the packet processing pipeline, potentially causing denial of service conditions or creating opportunities for further exploitation within the network infrastructure. The vulnerability's presence in the core packet processing components means that any system relying on this functionality for network communications becomes a potential target for privilege escalation attacks.
Mitigation strategies for CVE-2024-25990 must focus on addressing the underlying race condition and implementing proper memory bounds checking within the packet processing subsystem. System administrators should prioritize applying vendor-provided patches and updates that address the specific race condition in the pktproc_perftest_gen_rx_packet_sktbuf_mode function. The implementation of proper synchronization mechanisms such as mutex locks or atomic operations can prevent concurrent access violations that lead to the out-of-bounds write condition. Additionally, input validation and bounds checking should be strengthened throughout the packet processing pipeline to ensure that array indices and buffer limits are properly validated before memory operations occur. Network administrators should also consider implementing monitoring solutions that can detect anomalous packet processing behavior or memory corruption patterns that might indicate exploitation attempts. From an ATT&CK framework perspective, this vulnerability maps to T1068, "Exploitation for Privilege Escalation," and T1566, "Phishing," as the initial compromise may occur through other attack vectors, but the vulnerability itself enables privilege escalation. The remediation process should include comprehensive code review of the affected packet processing modules, implementation of static and dynamic analysis tools to identify similar race conditions, and establishment of secure coding practices that prevent such vulnerabilities from being introduced in future development cycles.