CVE-2018-9364 in Android
Summary
by MITRE • 11/19/2024
In the LG LAF component, there is a special command that allowed modification of certain partitions. This could lead to bypass of secure boot. User interaction is not needed for exploitation.
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Analysis
by VulDB Data Team • 11/23/2024
The vulnerability identified as CVE-2018-9364 resides within the LG LAF (LG Android Framework) component, representing a critical security flaw that undermines the device's boot integrity mechanisms. This vulnerability specifically targets the secure boot process, which serves as the foundational security layer that ensures only authenticated and trusted code executes during the device startup sequence. The LG LAF component operates as a crucial interface between the hardware and the Android operating system, managing low-level boot processes and firmware interactions. When exploited, this vulnerability allows attackers to manipulate critical system partitions through a specially crafted command that bypasses the normal security controls implemented by the secure boot mechanism.
The technical implementation of this vulnerability stems from insufficient access controls and validation within the LG LAF component's command processing functionality. The flaw enables unauthorized modification of system partitions that should normally be protected from tampering, effectively creating a backdoor that allows malicious actors to inject custom code or modify existing boot components. This capability directly violates the principles of integrity and authenticity that secure boot protocols are designed to enforce. The vulnerability operates at a low system level, leveraging the privileged execution context of the LAF component to perform operations that should be restricted to authorized system processes or administrators. According to CWE classification, this represents a weakness in the command execution process where proper input validation and privilege separation are inadequate.
The operational impact of CVE-2018-9364 is severe and far-reaching, as it enables attackers to completely bypass the device's security framework without requiring any user interaction or physical access. This means that malicious actors can exploit the vulnerability remotely, potentially affecting large numbers of devices simultaneously. The ability to modify system partitions creates a persistent threat vector that could allow for the installation of rootkits, backdoors, or other malicious software that operates at the system level. The vulnerability essentially provides a pathway for attackers to undermine the entire device security architecture, potentially leading to complete device compromise and data theft. From an ATT&CK framework perspective, this vulnerability maps to techniques involving bootkit installation and persistence mechanisms, specifically targeting the boot process and system integrity validation.
Mitigation strategies for this vulnerability require immediate firmware updates from LG and device manufacturers, as the flaw exists at the core system level where user-level patches are ineffective. Security researchers recommend that device owners immediately update their systems to the latest firmware versions that address this specific vulnerability. Organizations should implement network monitoring to detect potential exploitation attempts and establish device integrity verification processes that can identify compromised systems. The vulnerability highlights the importance of secure boot implementations and proper privilege separation in embedded systems, particularly in mobile devices where the attack surface is extensive. Given the nature of the flaw, security teams should conduct comprehensive audits of their mobile device management policies and consider implementing additional verification mechanisms beyond the standard secure boot protocols. The vulnerability also underscores the need for more robust firmware security practices and regular security assessments of system-level components that handle privileged operations.