CVE-2022-48243 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-2022-48243 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 potentially escalate their privileges to system level access. The vulnerability specifically affects the audio service's authorization mechanisms, where proper access controls fail to validate whether incoming requests originate from legitimate processes with appropriate privileges. The flaw exists in the service's permission validation logic, creating a pathway for malicious local actors to exploit the system's audio subsystem for privilege escalation. This represents a fundamental breakdown in the system's security architecture where the audio service fails to properly authenticate and authorize requests, potentially allowing any local user to execute arbitrary code with elevated privileges.
The technical implementation of this vulnerability stems from inadequate input validation and access control enforcement within the audio service's request handling mechanism. When legitimate audio service requests are processed, the system fails to perform proper permission verification checks that should validate the requesting process's privileges against the requested operation. This missing validation allows local processes to bypass normal authorization boundaries and execute privileged operations through the audio service interface. The vulnerability's impact is particularly concerning as it operates entirely within the local execution environment, meaning that any user with access to the system can potentially exploit this flaw without requiring network connectivity or additional attack vectors. The flaw essentially creates a backdoor within the audio service that malicious processes can leverage to gain root or administrative privileges, making it a prime target for local privilege escalation attacks.
The operational impact of CVE-2022-48243 extends beyond simple privilege escalation, as it fundamentally compromises the system's security model and trust boundaries. Once an attacker successfully exploits this vulnerability, they can execute arbitrary code with the highest system privileges, potentially leading to complete system compromise. The local nature of the attack means that the exploit can be executed from any user session, making it particularly dangerous in multi-user environments where different users may have varying privilege levels. This vulnerability directly violates the principle of privilege separation that is fundamental to secure system design, as it allows processes to bypass normal access controls and execute operations that should be restricted to privileged users. The exploitation of this vulnerability could enable attackers to install persistent backdoors, modify system files, access sensitive data, or disable security mechanisms. The attack surface is further expanded by the fact that audio services are typically long-running processes that maintain elevated privileges, providing attackers with extended opportunities to maintain access and execute malicious activities.
Mitigation strategies for CVE-2022-48243 should focus on strengthening the audio service's permission checking mechanisms and implementing comprehensive access control measures. System administrators should immediately apply vendor-provided security patches and updates that address the missing permission validation logic. The implementation of proper input validation and authorization checks within the audio service is essential, ensuring that all incoming requests are properly authenticated and authorized before processing. Additionally, the principle of least privilege should be enforced by limiting the audio service's capabilities to only those operations necessary for its intended function. Security monitoring should be enhanced to detect unauthorized access attempts to the audio service, and regular security audits should verify that proper access controls are in place. The vulnerability aligns with CWE-284, which describes inadequate access control, and represents a clear violation of the ATT&CK technique T1068 for locally executed commands and payloads. Organizations should also consider implementing process monitoring and privilege separation mechanisms to reduce the potential impact of such vulnerabilities in their environments.