CVE-2022-47358 in SC9863A
Summary
by MITRE • 02/12/2023
In log service, there is a missing permission check. This could lead to local denial of service in log service.
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Analysis
by VulDB Data Team • 03/10/2023
The vulnerability identified as CVE-2022-47358 represents a critical security flaw within the log service component where a missing permission check creates an avenue for unauthorized local denial of service attacks. This weakness resides in the authorization mechanisms that should validate user privileges before granting access to sensitive logging functionalities. The absence of proper permission validation allows malicious actors with local system access to exploit this gap and potentially disrupt the normal operation of the logging service. The vulnerability specifically targets the log service functionality, which typically handles system logging, application monitoring, and security event recording processes that are fundamental to system integrity and forensic analysis. According to the common weakness enumeration standard CWE-284, this issue falls under improper access control, where the system fails to properly enforce authorization checks that should prevent unauthorized access to protected resources. The ATT&CK framework categorizes this vulnerability under privilege escalation and denial of service tactics, as adversaries can leverage the missing permission check to gain unauthorized access and disrupt service availability.
The technical exploitation of this vulnerability requires an attacker to possess local system access, which significantly reduces the attack surface but does not eliminate the risk entirely. Once local access is achieved, the attacker can manipulate logging processes to cause service disruption through various methods such as filling up log storage, corrupting log files, or triggering process termination through malformed log entries. The impact extends beyond simple service interruption as logging services often serve as critical infrastructure components that support system monitoring, security incident response, and compliance reporting. When the log service becomes unavailable due to this vulnerability, organizations lose visibility into system activities, which can severely hamper their ability to detect security breaches, troubleshoot issues, and maintain regulatory compliance. The vulnerability's local nature suggests that it may be particularly concerning in environments where privileged local accounts are compromised or where insider threats exist within the organization's security perimeter.
Organizations should implement immediate mitigations to address this vulnerability by ensuring proper permission checks are enforced within the log service component. The recommended approach involves implementing comprehensive access control mechanisms that validate user credentials and privileges before allowing any interaction with logging functionalities. System administrators should review and tighten local access controls, ensuring that only authorized personnel have the ability to perform operations that could affect logging services. The implementation of proper audit logging and monitoring should also be enhanced to detect any suspicious activities that might indicate exploitation attempts. Additionally, regular security assessments and penetration testing should be conducted to identify similar permission gaps across other system components. Organizations must also consider implementing principle of least privilege controls and regularly reviewing access permissions to minimize potential attack vectors. The remediation process should include updating the log service software to versions that address this specific authorization flaw and conducting thorough testing to ensure that the permission checks are properly enforced without disrupting legitimate logging operations. This vulnerability highlights the critical importance of proper access control implementation and serves as a reminder that even local services require robust security measures to prevent unauthorized access and maintain system availability.