CVE-2022-47356 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-2022-47356 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 issue stems from inadequate access control mechanisms that fail to validate user privileges before executing sensitive operations within the logging infrastructure. The absence of proper authorization checks allows malicious actors with local system access to exploit the service and potentially disrupt its normal operational functions. Such vulnerabilities are particularly concerning in enterprise environments where logging services form the backbone of security monitoring and incident response capabilities. The flaw manifests as a failure in the service's ability to enforce mandatory access controls, creating a condition where unauthorized operations can be performed without proper authentication or authorization validation. This represents a fundamental breakdown in the security architecture of the logging service, where the principle of least privilege is not properly enforced. The vulnerability aligns with CWE-284 which specifically addresses improper access control issues, and falls under the broader category of privilege escalation flaws that can lead to system compromise. From an operational perspective, this weakness creates a significant risk for organizations relying on comprehensive logging for security operations, as it could enable attackers to disrupt critical logging functions and potentially hide their malicious activities within the system. The local nature of the vulnerability means that exploitation requires only local system access, making it particularly dangerous in environments where insider threats or compromised local accounts are possible.
The technical implementation of this vulnerability demonstrates a failure in the service's permission validation logic where certain operations that should require elevated privileges are executed without proper authorization checks. This missing validation creates a scenario where any local user can potentially trigger denial of service conditions through crafted requests or operations that target the logging service. The impact extends beyond simple service disruption as it can compromise the integrity of the logging infrastructure itself, potentially leading to data loss or corruption of log files. Attackers could exploit this weakness to flood the logging service with malformed requests, exhaust system resources, or manipulate log entries to obscure their activities. The vulnerability's exploitation pathway typically involves leveraging local system access to perform operations that should be restricted to authorized administrators or system processes. This misconfiguration creates an attack surface that can be leveraged for both disruptive and stealthy operations, depending on the attacker's objectives. The lack of proper input validation and access control enforcement represents a common pattern in software development where security controls are either omitted or incorrectly implemented, leading to serious operational consequences.
Organizations affected by CVE-2022-47356 face significant operational risks including potential service interruptions that can impact security monitoring capabilities and incident response procedures. The vulnerability's local exploitation requirement means that organizations must focus on preventing local system compromise and ensuring proper access controls at the operating system level. This includes implementing robust user account management, restricting local administrative privileges, and maintaining strict access control policies for system resources. The operational impact extends to the broader security posture as compromised logging services can undermine the effectiveness of security information and event management systems, potentially allowing attackers to remain undetected for extended periods. Security teams must prioritize immediate remediation efforts to address this vulnerability, including applying relevant patches or implementing compensating controls to prevent unauthorized access to the logging service. The vulnerability also highlights the importance of regular security assessments and penetration testing to identify similar permission-related flaws within system components. From a compliance perspective, organizations must ensure that their logging infrastructure meets regulatory requirements for data integrity and availability, as this vulnerability could potentially violate standards such as iso 27001 or soc 2 controls related to access management.
Recommended mitigations for CVE-2022-47356 include immediate implementation of proper access control checks within the log service to ensure that all operations are validated against appropriate user privileges. Organizations should implement comprehensive logging of access attempts and system operations to detect potential exploitation attempts. Network segmentation and privilege separation measures should be strengthened to limit local system access and reduce the attack surface. Regular security audits and code reviews should be conducted to identify similar permission-related vulnerabilities across the system infrastructure. System administrators should monitor for unusual logging service behavior and implement automated alerting mechanisms for potential denial of service conditions. The implementation of principle of least privilege should be enforced throughout the logging infrastructure, ensuring that only authorized personnel have access to critical logging operations. Additionally, organizations should consider implementing intrusion detection systems that can identify patterns consistent with exploitation attempts targeting the logging service. Regular security training for system administrators should emphasize the importance of proper access control implementation and the potential consequences of missing permission checks. The vulnerability also underscores the necessity of maintaining up-to-date security patches and implementing robust change management processes to prevent similar issues from arising in the future.