CVE-2022-48248 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-2022-48248 resides within the audio service component of a mobile operating system, specifically representing a critical permission bypass flaw that enables local privilege escalation. This issue manifests as a missing permission check within the audio service subsystem, which operates with elevated privileges to manage audio hardware and software resources. The absence of proper authorization validation allows malicious applications or processes running with standard user privileges to exploit this weakness and gain root-level access to the system. The vulnerability falls under the category of privilege escalation flaws that are particularly dangerous because they require no additional execution privileges beyond what is normally available to a regular user application.
The technical implementation of this flaw involves the audio service failing to validate whether incoming requests originate from authorized processes or users with appropriate permissions. When applications attempt to interact with audio hardware or modify system audio configurations, the service should verify that the requesting entity possesses the necessary permissions to perform such operations. However, due to the missing permission check, the audio service processes all requests without proper authorization validation, creating an attack surface where unauthorized code can manipulate audio subsystems with elevated privileges. This design flaw typically occurs when developers overlook the importance of access control checks in services that handle sensitive system resources, particularly those with direct hardware interaction capabilities.
The operational impact of CVE-2022-48248 extends beyond simple privilege escalation, as it provides attackers with complete control over the device's audio capabilities and potentially broader system access. Once an attacker achieves root privileges through this vulnerability, they can modify system files, install malicious applications, access sensitive data, and disable security features. The audio service's privileged position makes it an attractive target for attackers seeking to establish persistent access or escalate their privileges further within the system. This vulnerability represents a significant risk to device security and aligns with attack patterns documented in the attack technique matrix under privilege escalation tactics, specifically targeting the exploitation of service misconfigurations and insufficient access controls.
Security professionals should recognize this vulnerability as a classic example of a missing permission check issue that corresponds to CWE-284, which describes improper access control in software systems. The flaw demonstrates how services operating with elevated privileges must implement robust authorization mechanisms to prevent unauthorized access to system resources. Mitigation strategies include implementing comprehensive permission validation checks within the audio service, ensuring that all incoming requests are properly authenticated and authorized before processing. Additionally, system administrators should apply security patches promptly, implement application sandboxing, and monitor for unusual audio service activity that might indicate exploitation attempts. The vulnerability also highlights the importance of privilege separation and defense-in-depth strategies, where multiple layers of security controls work together to prevent successful exploitation of individual weaknesses. Organizations should conduct regular security assessments of system services to identify and remediate similar permission bypass vulnerabilities that could provide similar escalation paths.