CVE-2017-2703 in Mate 9
Summary
by MITRE
Phone Finder in versions earlier before MHA-AL00BC00B156,Versions earlier before MHA-CL00BC00B156,Versions earlier before MHA-DL00BC00B156,Versions earlier before MHA-TL00BC00B156,Versions earlier before EVA-AL10C00B373,Versions earlier before EVA-CL10C00B373,Versions earlier before EVA-DL10C00B373,Versions earlier before EVA-TL10C00B373 can be bypass. An attacker can bypass the Phone Finder by special steps and enter the System Setting.
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Analysis
by VulDB Data Team • 01/11/2023
The vulnerability identified as CVE-2017-2703 represents a critical security flaw in Huawei mobile devices that affects multiple device models including various MHA and EVA series smartphones. This vulnerability specifically targets the Phone Finder feature, which is designed to help users locate lost or stolen devices through remote access capabilities. The flaw allows unauthorized attackers to bypass the security mechanisms protecting this feature, potentially gaining access to sensitive system settings and device functionality. The affected versions span across multiple Huawei device lines, indicating a widespread issue that impacts a significant portion of the company's smartphone portfolio during that time period. This vulnerability is particularly concerning as it undermines the fundamental security assumptions of device recovery features that users rely on for protection.
The technical implementation of this vulnerability stems from insufficient authentication and authorization checks within the Phone Finder service. The flaw occurs when the system fails to properly validate user credentials or device state before granting access to system settings through the Phone Finder interface. Attackers can exploit this weakness by executing specific sequences of actions that manipulate the device's authentication flow, effectively circumventing the intended security controls. This bypass mechanism likely involves manipulating the device's state transitions or exploiting race conditions in the authentication process. The vulnerability aligns with CWE-287, which addresses improper authentication issues, and represents a classic case of weak access control implementation. The attack vector typically requires physical access to the device or the ability to perform specific pre-authentication actions that can be executed through the device's interface or remote management capabilities.
The operational impact of CVE-2017-2703 extends beyond simple privacy concerns to encompass potential device compromise and data exposure risks. When an attacker successfully bypasses the Phone Finder protection, they gain access to system settings that could enable further exploitation, including the ability to modify device configurations, install malicious applications, or access sensitive personal data stored on the device. This vulnerability creates a backdoor that could be leveraged for persistent access to the device, potentially allowing attackers to maintain control over the compromised system. The implications are particularly severe given that Phone Finder is designed as a security feature meant to help users recover lost devices, making this vulnerability a significant threat to device integrity and user privacy. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and persistence mechanisms, as attackers could use the bypass to establish long-term access to compromised devices.
Mitigation strategies for CVE-2017-2703 require immediate firmware updates from Huawei to address the authentication bypass flaw in affected device models. Users should ensure their devices are running the latest security patches available from Huawei, particularly those released after the vulnerability disclosure. Device administrators and IT security teams should implement monitoring for suspicious authentication patterns and unauthorized access attempts to Phone Finder services. The vulnerability highlights the importance of robust access control mechanisms and proper authentication validation in mobile operating systems. Organizations should consider implementing additional security measures such as device encryption, secure boot processes, and regular security assessments to reduce the attack surface. Security professionals should also be aware that this vulnerability could be exploited as part of broader attack campaigns targeting mobile devices, particularly in scenarios involving device recovery or remote management services. The incident underscores the critical need for continuous security testing of mobile device features and proper validation of authentication mechanisms before deployment.