CVE-2022-47347 in SC9863A
Summary
by MITRE • 02/12/2023
In engineermode services, there is a missing permission check. This could lead to local denial of service in engineermode services.
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Analysis
by VulDB Data Team • 03/10/2023
The vulnerability identified as CVE-2022-47347 represents a critical security flaw within the engineermode services component where a fundamental permission validation mechanism has been omitted. This missing permission check creates an exploitable condition that allows unauthorized local entities to disrupt the normal operation of engineering mode services, potentially leading to complete service denial. The vulnerability resides in the core access control framework of the system, where proper authorization checks should be enforced before granting access to sensitive engineering functions. Engineering mode services typically provide advanced diagnostic and configuration capabilities that are intended to be restricted to authorized personnel only, making this oversight particularly concerning from a security perspective.
The technical implementation of this flaw demonstrates a failure in the principle of least privilege enforcement, which is a fundamental security concept that requires systems to operate with the minimum level of access necessary to perform their functions. When permission checks are absent, any local user or process can potentially invoke engineering mode services without proper authentication or authorization, creating a pathway for malicious activity or accidental system disruption. This vulnerability falls under the category of improper access control as defined by CWE-284, which specifically addresses insufficient access control mechanisms that allow unauthorized access to resources or functionality. The absence of proper permission validation creates a direct attack surface where local users can manipulate system behavior in ways that were never intended by the system designers.
From an operational impact standpoint, this vulnerability can result in significant disruption to system availability and functionality, particularly in environments where engineering mode services are critical for system maintenance, diagnostics, or configuration management. Local denial of service conditions can prevent legitimate administrative users from accessing necessary engineering tools, effectively locking them out of system management functions. The impact extends beyond simple service interruption as it can potentially cause cascading failures in dependent systems that rely on these engineering mode services for proper operation. Attackers could leverage this vulnerability to repeatedly invoke engineering mode services in ways that consume system resources, cause crashes, or corrupt system states, leading to extended downtime and potential data loss.
The mitigation strategies for CVE-2022-47347 should focus on implementing robust access control mechanisms that enforce proper authorization checks before allowing access to engineering mode services. System administrators should immediately apply available patches or updates from the software vendor to address this missing permission validation. Additionally, implementing mandatory access controls and privilege separation can help contain the impact of such vulnerabilities. Organizations should conduct thorough security assessments to identify other similar permission check gaps within their engineering mode services and related system components. The remediation process should also include monitoring and logging mechanisms to detect unauthorized access attempts to engineering mode services, providing visibility into potential exploitation attempts. From an ATT&CK framework perspective, this vulnerability aligns with techniques such as privilege escalation and denial of service, where adversaries can exploit weak access controls to gain unauthorized access or disrupt system functionality, making it essential for security teams to address this issue promptly through both technical fixes and operational security improvements.