CVE-2022-48368 in SC9863A
Summary
by MITRE • 05/09/2023
In audio service, there is a possible missing permission check. This could lead to local escalation of privilege with no additional execution privileges.
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Analysis
by VulDB Data Team • 01/28/2025
The vulnerability identified as CVE-2022-48368 resides within the audio service component of a mobile operating system, specifically representing a critical authorization flaw that enables local privilege escalation. This issue manifests as a missing permission check within the audio service subsystem, creating a pathway for malicious actors to elevate their privileges from standard user level to system level without requiring additional execution privileges. The vulnerability's classification as a local privilege escalation indicates that exploitation occurs from within the device itself, typically requiring physical access or prior compromise of a lower-privileged account. The audio service in question likely handles multimedia processing, audio driver interactions, and system-level audio configuration functions that traditionally require elevated permissions to modify.
From a technical perspective, the missing permission check represents a fundamental flaw in the service's access control mechanism. The audio service likely performs operations that should be restricted to system-level processes or administrators, but due to the absence of proper permission validation, these operations can be invoked by any local user or application. This flaw directly violates the principle of least privilege and demonstrates inadequate input validation within the service's security architecture. The vulnerability may be exploited through manipulation of audio-related system calls, configuration changes, or by leveraging the service's interaction with other system components. Attackers could potentially modify audio driver configurations, access protected audio processing resources, or manipulate system audio settings that require elevated privileges to alter.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it provides attackers with elevated system access that could enable further exploitation. Once elevated to system privileges, attackers can access sensitive system resources, modify critical system files, install malicious software, or exfiltrate confidential data. The absence of additional execution privileges required for exploitation makes this vulnerability particularly dangerous as it can be triggered through standard user-level operations. This type of vulnerability is especially concerning in mobile environments where users frequently interact with multimedia applications, as it could be exploited through seemingly benign audio processing activities or malicious applications that attempt to leverage the audio service for unauthorized access.
Mitigation strategies for CVE-2022-48368 should focus on implementing proper access control measures within the audio service component. System administrators should ensure that all audio service operations include comprehensive permission checks that validate the requesting entity's privileges before executing sensitive operations. The fix should involve adding mandatory access control checks that verify system-level privileges before allowing audio service modifications or privileged operations. Organizations should also implement regular security audits of service components to identify similar missing permission checks and ensure compliance with security standards such as those outlined in the CWE database under category 284 for improper access control. Additionally, the vulnerability aligns with ATT&CK techniques related to privilege escalation and may be categorized under T1068 for exploit for privilege escalation. Regular system updates and patches should be applied immediately upon availability to address this vulnerability, and security monitoring should be enhanced to detect unusual audio service access patterns that might indicate exploitation attempts.