CVE-2023-42717 in SC7731E
Summary
by MITRE • 12/04/2023
In telephony service, there is a possible missing permission check. This could lead to remote information disclosure no additional execution privileges needed
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Analysis
by VulDB Data Team • 12/22/2023
The vulnerability identified as CVE-2023-42717 resides within telephony service implementations where a critical missing permission check has been discovered. This flaw represents a significant security weakness that allows unauthorized access to sensitive telephony data without requiring any additional execution privileges or elevated user rights. The vulnerability specifically impacts systems that handle telephony services and communications, potentially affecting a wide range of devices and platforms that rely on telephony functionality for their operations.
The technical root cause of this vulnerability stems from insufficient authorization controls within the telephony service framework. When a system processes telephony-related requests or operations, it fails to properly validate whether the requesting entity has adequate permissions to access specific telephony data or perform certain actions. This missing permission check creates an attack surface where malicious actors can exploit the absence of proper access controls to extract information from telephony systems. The vulnerability is classified as a missing permission check issue, which aligns with CWE-284 access control weaknesses and represents a failure in the principle of least privilege enforcement.
From an operational impact perspective, this vulnerability enables remote information disclosure attacks that can compromise telephony data confidentiality. Attackers can potentially access call logs, contact information, messaging data, and other sensitive telephony-related information simply by exploiting the missing permission validation. The remote nature of this vulnerability means that attackers do not need physical access to devices or local network privileges to exploit the flaw, making it particularly dangerous in environments where telephony services are exposed to external networks. This could result in significant privacy violations, data breaches, and potential compromise of communication channels that rely on telephony infrastructure.
The implications of CVE-2023-42717 extend beyond simple information disclosure as it represents a fundamental breakdown in security controls that could enable more sophisticated attacks. Organizations relying on affected telephony services may experience unauthorized data access that could lead to targeted attacks, social engineering opportunities, or further exploitation of compromised systems. The vulnerability's classification under ATT&CK technique T1071.004 for application layer protocol communication and T1005 for data from local system aligns with the operational security implications. Security professionals should consider this vulnerability as part of broader telephony security assessments and implement comprehensive monitoring for unauthorized access attempts.
Mitigation strategies for CVE-2023-42717 should focus on implementing proper permission validation mechanisms within telephony service implementations. Organizations should ensure that all telephony-related operations perform adequate authorization checks before granting access to sensitive data or functionality. This includes implementing role-based access controls, enforcing proper authentication mechanisms, and establishing robust audit trails for telephony service operations. System administrators should also consider network segmentation to limit access to telephony services and implement intrusion detection systems to monitor for suspicious telephony data access patterns. The remediation efforts should align with industry best practices for secure telephony service design and follow guidelines from organizations such as NIST SP 800-53 for access control requirements. Regular security assessments and vulnerability scanning should be conducted to identify similar permission check gaps in telephony implementations and other service components.