CVE-2022-47367 in SC9863A
Summary
by MITRE • 02/12/2023
In bluetooth driver, there is a missing permission check. This could lead to local information disclosure with no additional execution privileges needed.
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Analysis
by VulDB Data Team • 03/10/2023
The vulnerability identified as CVE-2022-47367 resides within a bluetooth driver component where a critical missing permission check has been discovered. This flaw exists at the kernel level within the bluetooth subsystem, representing a fundamental security oversight that undermines the principle of least privilege. The vulnerability is classified as a permission bypass issue that allows unauthorized access to sensitive system information without requiring any elevated execution privileges or malicious code injection.
From a technical perspective, the missing permission check manifests as an insufficient access control mechanism within the bluetooth driver's kernel interface. This flaw enables local attackers to exploit the driver's functionality to extract confidential information from the system. The vulnerability operates at the driver level where proper authentication and authorization checks should be enforced but are absent. The flaw specifically affects the bluetooth driver's ability to validate whether a requesting process has appropriate permissions to access certain system resources or data structures.
The operational impact of this vulnerability is significant for local system security. An attacker with basic user privileges can leverage this weakness to gain unauthorized access to bluetooth-related system information, potentially including device pairing data, connection logs, or other sensitive metadata. This information disclosure could serve as a stepping stone for further attacks or provide valuable intelligence for more sophisticated exploitation attempts. The vulnerability's local nature means that it does not require network access or remote exploitation capabilities, making it particularly concerning for environments where local privilege escalation is not properly mitigated.
The security implications extend beyond simple information disclosure, as this vulnerability aligns with several ATT&CK framework techniques including privilege escalation and credential access. The missing permission check represents a failure in the driver's security model and could potentially enable attackers to gather information about the system's bluetooth configuration, device pairing history, or connection patterns that might reveal sensitive operational details. This type of vulnerability is particularly dangerous in enterprise environments where bluetooth connectivity is widely used for device management and access control systems.
Mitigation strategies for CVE-2022-47367 should focus on implementing proper access control mechanisms within the bluetooth driver component. System administrators should ensure that all bluetooth driver components are updated with the latest security patches from the vendor, as this vulnerability typically requires a driver-level fix. The implementation of mandatory access controls and proper permission validation should be enforced at the kernel level to prevent unauthorized access to sensitive bluetooth system resources. Additionally, monitoring and logging of bluetooth driver access patterns should be implemented to detect potential exploitation attempts. This vulnerability falls under CWE-284 which specifically addresses improper access control issues, and it represents a clear violation of security best practices in kernel driver development where all system interfaces must properly validate access permissions before granting access to protected resources.