CVE-2022-48493 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-2022-48493 represents a critical configuration defect within the secure operating system module of affected systems. This weakness resides in the fundamental security architecture that governs how sensitive operations are handled within the secure environment. The secure OS module serves as a critical isolation layer that protects sensitive data and processes from unauthorized access or manipulation, making any configuration flaws particularly dangerous. Such defects typically arise from improper initialization of security parameters, incorrect permission settings, or misconfigured access controls that undermine the intended security boundaries. The vulnerability specifically impacts the availability aspect of the system, meaning that successful exploitation could result in denial of service conditions that prevent legitimate users from accessing critical services or data. This type of weakness is particularly concerning in environments where system uptime and continuous operation are essential for business continuity and security operations. The configuration defects may manifest as improperly set timeouts, incorrect privilege escalation controls, or flawed resource allocation mechanisms that when exploited can cause system instability or complete service disruption.
The technical implementation of this vulnerability stems from inadequate security configuration management within the secure OS module. When security parameters are not properly initialized or maintained, the system may fail to enforce critical access controls that protect against unauthorized operations. This could involve scenarios where default security settings are not properly overridden, or where configuration updates fail to propagate correctly throughout the secure execution environment. The flaw may also exist in how the system handles resource allocation or process isolation, where improper configuration could lead to resource exhaustion or process termination that affects overall system availability. From a compliance perspective, this vulnerability directly impacts the integrity of security controls and may violate industry standards such as those outlined in the NIST Cybersecurity Framework or ISO 27001 requirements for secure system configuration. The vulnerability's classification aligns with CWE-706, which addresses the use of unsafe methods to access resources, and may also relate to CWE-254, concerning security misconfigurations that create weaknesses in system defenses. These misconfigurations can create opportunities for attackers to manipulate system behavior through configuration changes that should be protected from unauthorized modification.
The operational impact of CVE-2022-48493 extends beyond simple service disruption to potentially compromise the entire security posture of affected systems. When availability is compromised, it affects not only user access but also the integrity of security operations that depend on continuous system operation. Attackers who successfully exploit this vulnerability may be able to cause cascading failures that impact multiple security functions within the secure OS module, potentially leading to data loss or unauthorized access to sensitive information. The availability impact can manifest through various attack vectors including resource exhaustion attacks, process termination, or manipulation of system timers and scheduling mechanisms that govern secure operations. This vulnerability particularly affects systems where the secure OS module provides critical functions such as cryptographic operations, secure key management, or trusted execution environment capabilities. Organizations may experience significant downtime, loss of operational capability, and potential regulatory compliance violations. The impact is further compounded in environments where the secure OS module interfaces with other security systems, creating potential for broader security breaches that extend beyond the immediate system. The vulnerability's exploitation could also lead to increased operational costs due to emergency response activities, system recovery efforts, and potential regulatory penalties for security failures.
Mitigation strategies for CVE-2022-48493 require immediate attention to system configuration management and security hardening practices. Organizations should implement comprehensive configuration review processes that include regular audits of secure OS module settings and validation of security parameter configurations. The remediation approach should involve proper initialization of security parameters, implementation of configuration management controls, and establishment of secure baseline configurations that prevent unauthorized modifications. Security teams should deploy automated monitoring solutions that can detect configuration changes and alert on potential security misconfigurations that could lead to availability issues. The implementation of principle of least privilege controls within the secure OS module can help minimize the impact of configuration defects by limiting the scope of potential exploitation. Organizations should also consider implementing robust backup and recovery mechanisms that can quickly restore system functionality in case of availability disruption caused by this vulnerability. Regular security testing including configuration vulnerability assessments and penetration testing can help identify and remediate similar issues before they can be exploited. From an ATT&CK framework perspective, this vulnerability relates to techniques such as T1499.004 for endpoint detection and response evasion and T1562.001 for disabling security services, making it important for organizations to maintain comprehensive threat detection capabilities. The vulnerability also highlights the importance of maintaining updated security patches and implementing proper change management procedures that prevent unauthorized modifications to critical system configurations.