CVE-2022-47464 in SC9863A
Summary
by MITRE • 04/11/2023
In telecom service, there is a missing permission check. This could lead to local denial of service in telecom service.
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Analysis
by VulDB Data Team • 04/28/2023
The vulnerability identified as CVE-2022-47464 represents a critical permission enforcement flaw within telecom service implementations that exposes systems to unauthorized local denial of service attacks. This weakness manifests as a missing permission check that allows malicious actors with local access to exploit the service in ways that can disrupt normal telecommunications operations. The vulnerability specifically affects telecom service components where proper access controls should be enforced but are instead absent or improperly implemented.
From a technical perspective, this missing permission check creates a path for unauthorized local execution of service functions that should be restricted to privileged users or system components. The flaw typically occurs when telecom service implementations fail to validate user credentials or access levels before permitting execution of critical operations. This type of vulnerability directly maps to CWE-284 which describes improper access control mechanisms, and aligns with ATT&CK technique T1489 which covers denial of service through resource exhaustion or service disruption. The vulnerability exists at the service layer where telecom applications handle calls, connections, or network management functions, making it particularly dangerous in production environments.
The operational impact of CVE-2022-47464 extends beyond simple service disruption to potentially compromise entire telecom infrastructure reliability. Local attackers with minimal privileges can leverage this weakness to cause service interruptions that affect call routing, network connectivity, or other critical telecom functions. In carrier-grade environments, this vulnerability could enable attackers to create widespread service degradation affecting thousands of users simultaneously. The local nature of the attack means that adversaries do not require network-level access or complex exploitation techniques, making the vulnerability particularly concerning for telecom providers who must maintain high availability and service level agreements.
Mitigation strategies for this vulnerability should focus on implementing comprehensive access control mechanisms that enforce proper permission checks at all service entry points. Organizations must conduct thorough security reviews of telecom service implementations to identify and remediate missing permission checks across all service components. The solution involves deploying proper authentication and authorization frameworks that validate user privileges before executing sensitive operations. Security patches should be applied immediately to address the missing permission validation, while access control policies should be reviewed and strengthened to prevent similar issues in future implementations. Network segmentation and monitoring solutions should also be enhanced to detect unauthorized local access attempts that may indicate exploitation of this vulnerability.