CVE-2022-48247 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-2022-48247 resides within the audio service component of a system, representing a critical security flaw that undermines the principle of least privilege. This issue manifests as a missing permission check that allows unauthorized local processes to escalate their privileges without requiring additional execution rights. The audio service typically operates with elevated privileges to manage system audio resources and device interactions, making it a prime target for privilege escalation attacks. The absence of proper access control validation within this service creates a pathway for malicious actors to exploit the system's security model.
The technical nature of this vulnerability aligns with CWE-284, which describes improper access control mechanisms that allow unauthorized users to gain access to resources or functionality. The flaw occurs at the service level where the audio subsystem fails to verify whether incoming requests originate from authorized processes or users with appropriate permissions. This missing validation step enables local processes to bypass normal security boundaries and execute privileged operations that should only be available to system administrators or trusted components. The vulnerability essentially creates a backdoor within the system's permission model that can be exploited by any local user or process with basic execution rights.
From an operational perspective, this vulnerability presents a significant risk to system integrity and security posture. Attackers can leverage this flaw to gain elevated privileges without requiring additional attack vectors or complex exploitation techniques. The local escalation of privilege means that an attacker who has already gained access to a system through other means can use this vulnerability to move laterally or establish persistent access with higher privileges. This type of vulnerability is particularly dangerous in multi-user environments or systems where local access is not strictly controlled, as it can be exploited by any user with basic login credentials or access to the system.
The impact of CVE-2022-48247 extends beyond simple privilege escalation, as it can enable attackers to manipulate system audio configurations, access sensitive audio data, or potentially interfere with other system services that depend on audio functionality. This vulnerability can be exploited in conjunction with other attack vectors to create more sophisticated compromise scenarios, as outlined in the MITRE ATT&CK framework under privilege escalation techniques. The attack surface is particularly concerning because audio services are often running with elevated privileges and may have access to sensitive system resources. Organizations should consider implementing immediate mitigations such as updating to patched versions, reviewing audio service permissions, and monitoring for unauthorized privilege escalation attempts. The vulnerability underscores the importance of comprehensive security testing, including access control validation, particularly for services that operate with elevated privileges and handle system-critical resources.