CVE-2022-47357 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-2022-47357 represents a critical security flaw within log service implementations where a missing permission check creates an avenue for unauthorized local denial of service attacks. This weakness specifically targets the authorization mechanisms that should govern access to logging services, potentially allowing malicious actors with local system access to disrupt normal logging operations and compromise system availability. The vulnerability stems from inadequate validation of user privileges before permitting access to critical logging functionalities, creating a scenario where unauthorized processes can manipulate log service operations and cause service disruption.
From a technical perspective, this vulnerability manifests as a failure in the access control framework that should enforce proper authorization checks before granting permissions to interact with logging components. The missing permission check typically occurs at the application level where the system fails to verify whether the requesting process or user possesses the necessary privileges to perform specific logging operations. This flaw aligns with CWE-284, which addresses improper access control issues, and represents a classic case of insufficient authorization validation that enables privilege escalation or unauthorized resource manipulation. The vulnerability is particularly concerning in environments where logging services are critical for system monitoring, security auditing, and compliance requirements.
The operational impact of CVE-2022-47357 extends beyond simple service disruption to encompass broader implications for system integrity and security monitoring capabilities. Local denial of service attacks leveraging this vulnerability can result in complete logging service unavailability, preventing system administrators from accessing critical diagnostic information and security event logs. This disruption directly affects incident response capabilities and can mask other security incidents that would normally be logged, creating a false sense of security while actual threats persist undetected. The vulnerability can be exploited through local system access, making it particularly dangerous in environments where unauthorized local access is possible, and can be leveraged as part of broader attack chains that include privilege escalation and persistent access.
Mitigation strategies for CVE-2022-47357 should focus on implementing robust access control mechanisms and comprehensive permission validation throughout the logging service architecture. Organizations should ensure that all logging operations enforce proper authentication and authorization checks before allowing any interaction with logging components, implementing principle of least privilege principles for log service processes. The fix typically involves adding explicit permission validation checks that verify user credentials and privileges before granting access to logging functions, aligning with ATT&CK technique T1562.001 for privilege escalation and access control bypass. Security teams should also implement monitoring for unusual logging service behavior and establish regular access control reviews to identify potential unauthorized access patterns. System administrators should prioritize patching affected log service implementations and conduct thorough security assessments to identify similar permission check gaps in other system components, ensuring comprehensive protection against similar vulnerabilities.