CVE-2016-5232 in Mate8
Summary
by MITRE
Buffer overflow in Huawei Mate8 NXT-AL before NXT-AL10C00B182, NXT-CL before NXT-CL00C92B182, NXT-DL before NXT-DL00C17B182, and NXT-TL before NXT-TL00C01B182 allows attackers to cause a denial of service (system crash) via a crafted app.
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Analysis
by VulDB Data Team • 08/26/2022
The vulnerability identified as CVE-2016-5232 represents a critical buffer overflow flaw affecting Huawei Mate8 devices running specific firmware versions including NXT-AL10C00B182 and related variants. This issue resides within the device's operating system kernel or system-level components that process application data, creating a pathway for malicious actors to exploit memory management weaknesses. The vulnerability manifests when a specially crafted application attempts to write data beyond the allocated buffer boundaries, potentially leading to system instability and complete service disruption.
Buffer overflow conditions in mobile operating systems typically occur when developers fail to properly validate input data lengths or implement adequate bounds checking mechanisms. The affected Huawei Mate8 models utilize a proprietary Android-based operating system with custom Huawei enhancements that introduce additional complexity to the memory management architecture. This specific flaw falls under the CWE-121 category of stack-based buffer overflow, where insufficient bounds checking allows attackers to overwrite adjacent memory locations. The vulnerability affects the device's core system services that handle application execution and resource allocation, making it particularly dangerous as it can be triggered through legitimate application installation and execution processes.
The operational impact of this vulnerability extends beyond simple denial of service conditions, as system crashes can result in complete device lockdown scenarios that prevent normal operation. Attackers can leverage this weakness to repeatedly crash the device's core services, potentially rendering the smartphone unusable until manual reboot or firmware recovery is performed. The exploitation requires only a crafted malicious application that can be distributed through various channels including third-party app stores or phishing campaigns. The affected firmware versions represent a significant portion of Huawei Mate8 deployments, particularly in enterprise and consumer environments where device reliability is paramount for business continuity. This vulnerability demonstrates the critical importance of proper input validation and memory management in mobile operating systems, as it can be exploited to create persistent service disruption scenarios.
Mitigation strategies for CVE-2016-5232 require immediate firmware updates from Huawei to address the underlying buffer overflow conditions in the system libraries and kernel components. Organizations should implement application whitelisting policies to prevent installation of untrusted applications that could trigger the vulnerability, while also monitoring for suspicious application behavior that might indicate exploitation attempts. Network-based detection measures can identify potentially malicious applications through signature-based approaches targeting known exploit patterns, though these methods may prove insufficient against zero-day exploitation attempts. Device administrators should consider implementing mobile device management solutions that can remotely enforce security policies and restrict application permissions to minimize the attack surface. The vulnerability also highlights the need for comprehensive security testing of mobile operating system components, particularly in custom Android implementations that introduce additional attack vectors beyond standard android security models. This issue aligns with ATT&CK technique T1499.001 for network denial of service and represents a significant concern for organizations relying on Huawei devices for critical business operations.