CVE-2023-30918 in SC9863A
Summary
by MITRE • 07/12/2023
In telephony service, there is a missing permission check. This could lead to local information disclosure with no additional execution privileges needed.
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Analysis
by VulDB Data Team • 07/30/2023
The vulnerability identified as CVE-2023-30918 resides within telephony service implementations where a critical missing permission check has been discovered. This flaw exists in the authorization mechanisms that govern access to telephony-related functionalities and data. The absence of proper permission validation creates a pathway for unauthorized information disclosure that does not require elevated execution privileges or administrative rights to exploit. The vulnerability manifests in systems where telephony services operate with insufficient access controls, potentially exposing sensitive communication data to malicious actors who can leverage this weakness without needing to escalate their privileges.
The technical root cause of this vulnerability aligns with CWE-284, which describes improper access control mechanisms within software systems. This weakness occurs when applications fail to properly verify whether an entity attempting to access a resource has the necessary permissions to do so. In the context of telephony services, this translates to inadequate checks on who can access call logs, contact information, message data, or other sensitive telephony-related information. The flaw represents a failure in the principle of least privilege, where systems should only grant access to resources based on verified authorization credentials rather than allowing unrestricted access to telephony data.
From an operational impact perspective, this vulnerability creates significant risks for organizations relying on telephony services for business communications. Local information disclosure can expose sensitive data including personal phone numbers, call histories, voice messages, and potentially confidential business communications. The lack of additional execution privileges required for exploitation means that even unprivileged users or attackers with minimal system access can potentially retrieve this sensitive information. This creates a substantial risk for data breaches, privacy violations, and potential regulatory compliance issues under data protection frameworks such as gdpr and hipaa. The vulnerability is particularly concerning in enterprise environments where telephony systems may contain sensitive corporate communications and personal employee data.
Security mitigation strategies should focus on implementing comprehensive permission checking mechanisms throughout the telephony service architecture. Organizations must ensure that all telephony-related data access points include proper authentication and authorization checks before granting access to sensitive information. This includes implementing role-based access controls, regular permission audits, and ensuring that all telephony service components properly validate user credentials and privileges. The remediation process should involve reviewing all telephony service interfaces and data access points to verify that appropriate access controls are in place. Additionally, system administrators should implement monitoring solutions to detect unauthorized access attempts to telephony data and establish incident response procedures for potential exploitation of this vulnerability. The implementation of these controls aligns with attack techniques documented in the attack tree framework where adversaries may attempt to leverage missing permission checks as part of their information gathering phases.