CVE-2018-7988 in Huawei
Summary
by MITRE
There is a Factory Reset Protection (FRP) bypass vulnerability on several smartphones. The system does not sufficiently verify the permission, an attacker uses a data cable to connect the smartphone to another smartphone and then perform a series of specific operations. Successful exploit could allow the attacker bypass the FRP protection.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 06/12/2023
The Factory Reset Protection vulnerability identified as CVE-2018-7988 represents a critical security flaw in smartphone implementations that undermines fundamental device protection mechanisms. This vulnerability specifically targets the Factory Reset Protection feature which is designed to prevent unauthorized access to devices following a factory reset operation. The flaw exists in the permission verification process that governs how devices handle data connections and reset operations, creating an exploitable gap in the security architecture that was intended to protect user data and device integrity.
The technical implementation of this vulnerability stems from insufficient validation of connection permissions when smartphones are connected via data cables to other devices. When a smartphone is connected to another device through a USB cable, the system should enforce strict permission controls to prevent unauthorized operations. However, the flaw allows attackers to manipulate the connection sequence and execute specific operations that circumvent these permission checks. This bypass mechanism operates at the system level where the device fails to properly authenticate the source and intent of the connection, enabling malicious actors to perform operations that should be restricted to authorized users or system processes.
The operational impact of this vulnerability extends beyond simple data theft to encompass complete device compromise and potential privacy violations. An attacker who successfully exploits this vulnerability can bypass the Factory Reset Protection mechanism, which typically requires authentication credentials before allowing a device to be reset or reconfigured. This creates a pathway for unauthorized individuals to gain access to locked devices, potentially enabling them to extract sensitive information, install malicious applications, or perform other harmful operations. The vulnerability is particularly concerning because it can be exploited using simple hardware connections without requiring advanced technical skills or specialized tools, making it accessible to a wide range of threat actors.
The security implications of CVE-2018-7988 align with CWE-284 (Improper Access Control) and represent a significant deviation from established security practices. This vulnerability demonstrates weaknesses in the principle of least privilege implementation where the system should have enforced strict access controls during data transfer operations. From an adversarial perspective, this flaw maps to ATT&CK technique T1490 (Inhibit System Recovery) and T1566 (Phishing) as attackers could exploit it to bypass device protections and gain unauthorized access to systems. The vulnerability also reflects poor implementation of secure boot processes and connection management protocols that should prevent unauthorized data manipulation during device interactions. Organizations and individuals should implement additional security measures beyond the default device protections, including regular firmware updates, network monitoring, and device tracking solutions to mitigate the risks associated with this vulnerability.
Mitigation strategies should focus on both immediate remediation and long-term security improvements. Device manufacturers should implement robust permission verification mechanisms that enforce strict authentication requirements during data connections, particularly when devices are in locked states. Users should be educated about the risks of connecting their devices to unknown or untrusted systems and should implement additional authentication layers beyond the default FRP protection. Network administrators should monitor for unusual connection patterns and implement device management policies that restrict data transfer operations. The vulnerability also highlights the importance of secure device lifecycle management practices, including proper secure erase procedures and verification mechanisms that prevent unauthorized access during reset operations. Security frameworks should incorporate regular testing of permission controls and connection management protocols to identify similar vulnerabilities before they can be exploited by malicious actors.