CVE-2022-48241 in SC9863A
Summary
by MITRE • 05/09/2023
In telephony service, there is a possible missing permission check. This could lead to local denial of service with no additional execution privileges.
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Analysis
by VulDB Data Team • 01/28/2025
The vulnerability identified as CVE-2022-48241 resides within telephony service implementations where a critical missing permission check has been discovered. This flaw represents a significant security weakness that could be exploited to disrupt telephony functionality on affected systems. The vulnerability specifically impacts the authorization mechanisms that govern access to telephony service components, creating a potential pathway for unauthorized disruption of communication services.
The technical flaw manifests as an insufficient validation of permissions within the telephony service architecture. When the system processes telephony-related operations, it fails to properly verify whether the requesting entity possesses adequate privileges to perform the requested action. This missing authorization check creates a scenario where malicious actors or compromised processes could manipulate telephony service functions without proper authentication. The vulnerability operates at the service level where permission validation should occur but does not, effectively bypassing security controls that would normally prevent unauthorized access to telephony resources.
From an operational perspective, this vulnerability presents a local denial of service threat that can be executed without requiring additional privileges beyond what is already available to the attacker. The impact extends to telephony service availability, potentially disrupting voice communication, call handling, and other telephony functions that depend on the affected service. While the attack vector is limited to local execution, the consequences can be severe for systems where telephony services are critical for business operations or emergency response capabilities. The vulnerability can be exploited by processes running with standard user privileges or even by compromised applications that have access to the local system.
The weakness aligns with CWE-284 which addresses improper access control mechanisms, specifically highlighting insufficient permission checks that allow unauthorized access to system resources. This vulnerability also maps to ATT&CK technique T1499 which covers network denial of service attacks, though in this case the attack is local rather than network-based. The missing permission check represents a fundamental breakdown in the principle of least privilege, where the system fails to enforce proper access controls that should prevent unauthorized manipulation of telephony services.
Mitigation strategies should focus on implementing comprehensive permission validation mechanisms within the telephony service components. System administrators should ensure that all telephony service operations include proper authorization checks before executing any privileged actions. The implementation should include robust access control lists that verify user credentials and privileges before allowing telephony service modifications. Additionally, regular security audits should validate that all service components properly enforce authorization controls and that no unauthorized access paths exist within the telephony service architecture. Updates and patches should be applied promptly to address the underlying permission checking deficiencies, and system monitoring should be enhanced to detect unusual telephony service access patterns that might indicate exploitation attempts.