CVE-2022-48487 in EMUI
Summary
by MITRE • 06/19/2023
Configuration defects in the secure OS module.Successful exploitation of this vulnerability will affect availability.
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Analysis
by VulDB Data Team • 07/15/2023
The vulnerability identified as CVE-2022-48487 represents a critical configuration defect within the secure operating system module of affected devices. This weakness resides in the fundamental security architecture that governs how sensitive operations are handled within the system's trusted execution environment. The flaw manifests as improper configuration settings that compromise the integrity of the secure OS module, potentially allowing unauthorized access to protected system resources and operations.
The technical implementation of this vulnerability stems from inadequate initialization or runtime configuration of security parameters within the secure OS component. This misconfiguration can occur during system boot processes, firmware updates, or through improper administrative settings that fail to establish proper security boundaries. The secure OS module typically operates in a separate memory space with restricted access controls, but the configuration defect undermines these protective mechanisms by allowing privilege escalation or bypass of security checks that should normally prevent unauthorized operations.
From an operational perspective, the impact of this vulnerability directly affects system availability through multiple attack vectors. An attacker who successfully exploits this configuration defect can potentially cause system crashes, prevent legitimate users from accessing critical services, or render the secure OS module non-functional entirely. The availability compromise occurs because the vulnerable configuration may allow denial of service attacks that target the secure OS environment, preventing legitimate security operations from executing properly. This can result in cascading failures where the system becomes unable to perform essential security functions such as cryptographic operations, secure boot processes, or protected memory management.
The vulnerability aligns with CWE-706 Use of Incorrectly-Resolved Name or Reference, as it involves improper configuration that leads to the incorrect resolution of security parameters within the secure OS module. This weakness can be leveraged through techniques described in the ATT&CK framework under T1566 Initial Access and T1499 Endpoint Denial of Service, where attackers exploit misconfigurations to gain access to system resources and subsequently disrupt availability. The secure OS module's configuration defects create opportunities for attackers to manipulate system behavior through indirect means that ultimately compromise the availability of critical security services.
Mitigation strategies should focus on implementing robust configuration management practices that ensure proper initialization of secure OS parameters during system boot and update processes. Regular security audits should validate that the secure OS module operates with appropriate access controls and that all configuration settings align with security best practices. System administrators must implement automated configuration validation tools that can detect and alert on improper secure OS module settings. Additionally, firmware update mechanisms should include integrity checks to prevent unauthorized modifications to secure OS configurations, while implementing proper access controls that limit who can modify these critical security parameters to reduce the attack surface and prevent exploitation of this vulnerability.