CVE-2019-5266 in P30
Summary
by MITRE
Huawei Share function in P30 9.1.0.193(C00E190R2P1) smartphone has an insufficient input validation vulnerability. Attackers can exploit this vulnerability by sending crafted packets to the affected device. Successful exploit may cause the function will be disabled.
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Analysis
by VulDB Data Team • 03/16/2024
The vulnerability identified as CVE-2019-5266 resides within Huawei's Share function implementation on P30 smartphones running firmware version 9.1.0.193(C00E190R2P1). This represents a critical security flaw that stems from inadequate input validation mechanisms within the wireless sharing protocol. The affected device's Huawei Share functionality, which enables seamless file transfer and device connectivity, contains a weakness that allows malicious actors to manipulate the system through carefully constructed network packets. This vulnerability specifically targets the input sanitization processes that should normally validate and filter all incoming data streams to prevent unauthorized system modifications or disruptions.
The technical nature of this flaw aligns with CWE-20, which describes inadequate input validation as a fundamental weakness in software design. Attackers can exploit this vulnerability by crafting and transmitting malicious packets that bypass normal validation checks within the Huawei Share service. The attack vector specifically targets the wireless communication protocols that govern device-to-device sharing, potentially allowing unauthorized modification of the sharing service's operational parameters. When successfully exploited, the malicious input causes the Huawei Share function to become disabled, effectively rendering the device's wireless sharing capabilities inoperable. This disruption represents a denial-of-service condition that prevents legitimate users from utilizing a core smartphone feature.
From an operational standpoint, this vulnerability presents significant risk to users who rely on Huawei Share for daily device connectivity and file transfer operations. The impact extends beyond simple service disruption as it affects the overall user experience and device functionality. Mobile devices running this firmware version become vulnerable to attacks that can be executed remotely without requiring physical access or complex exploitation techniques. The vulnerability's accessibility makes it particularly dangerous in environments where mobile devices are used for business or personal communication. The disablement of the sharing function creates a cascading effect that may impact other connected services or applications that depend on the wireless sharing infrastructure, potentially leading to broader system instability.
Security mitigations for this vulnerability should prioritize immediate firmware updates from Huawei to address the input validation deficiencies. Network administrators and security professionals should implement monitoring solutions to detect anomalous packet patterns that may indicate exploitation attempts. The implementation of network segmentation and access controls can help limit the potential impact of such attacks. Additionally, users should be educated about the risks associated with connecting to untrusted networks or accepting unknown device connections. Organizations should consider implementing endpoint protection measures that can detect and prevent the transmission of malicious packets designed to exploit this specific vulnerability. This vulnerability also highlights the importance of secure coding practices and thorough input validation testing in mobile operating systems, particularly for wireless sharing and device connectivity features. The ATT&CK framework categorizes this as a denial-of-service attack vector that leverages protocol implementation weaknesses to compromise system availability and user access to core device functions.