CVE-2021-37071 in Huawei
Summary
by MITRE • 12/07/2021
There is a Business Logic Errors vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may lead to persistent dos.
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Analysis
by VulDB Data Team • 12/10/2021
The vulnerability identified as CVE-2021-37071 represents a business logic error within Huawei smartphone devices that can result in persistent denial of service conditions. This classification aligns with CWE-840 which specifically addresses business logic flaws that can be exploited to cause system instability or service disruption. The issue manifests in the smartphone's operational framework where legitimate user activities or system processes can be manipulated to trigger cascading failures that prevent normal device functionality.
This business logic error stems from inadequate validation of system states or process flows within the smartphone's operating environment. The vulnerability allows an attacker to exploit the device's normal operational pathways in ways that were not anticipated by the original design, creating conditions where the device becomes unresponsive or enters a state where it cannot properly execute its core functions. The persistent nature of the denial of service indicates that once exploited, the device may remain in a compromised state until manual intervention or device reboot occurs.
The operational impact of this vulnerability extends beyond simple service interruption as it affects the fundamental usability of the smartphone. Users may experience complete loss of device functionality where basic operations such as making calls, sending messages, or accessing applications become impossible. The business logic error creates a scenario where the device's internal state management fails to properly handle certain sequences of operations, leading to an infinite loop or deadlock condition that prevents the system from recovering without external intervention. This type of vulnerability particularly concerns mobile device security as it can render smartphones completely unusable for extended periods.
From a security framework perspective, this vulnerability demonstrates characteristics consistent with ATT&CK technique T1499 which involves disruption of services through various means including business logic manipulation. The attack surface for this vulnerability likely involves legitimate system interfaces that are not properly secured against malicious input or state manipulation. Mitigation strategies should focus on implementing robust input validation mechanisms, proper state management protocols, and comprehensive testing of business logic flows to identify potential exploitation vectors. Additionally, regular security assessments and firmware updates are essential to address such vulnerabilities before they can be effectively exploited by malicious actors. The vulnerability underscores the critical importance of considering business logic flaws in security design reviews and emphasizes the need for comprehensive testing methodologies that examine not just individual components but their interactions within the complete system architecture.