CVE-2023-42745 in SC7731E
Summary
by MITRE • 12/04/2023
In telecom service, there is a possible missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed
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Analysis
by VulDB Data Team • 12/23/2023
The vulnerability identified as CVE-2023-42745 represents a critical security flaw within telecom service implementations where a missing permission check creates an avenue for local privilege escalation. This issue resides in the core service architecture of telecommunications infrastructure, where proper access controls have been omitted or incorrectly implemented, allowing unauthorized local users to elevate their privileges without requiring additional execution privileges or elevated permissions. The vulnerability specifically targets the authorization mechanisms that should prevent unauthorized access to sensitive system functions and resources.
From a technical perspective, this missing permission check manifests as a failure in the service's access control validation process. When local users attempt to perform privileged operations, the system fails to properly verify their authorization credentials or roles, creating a gap in the security model. This flaw operates at the service level where user requests are processed, and the absence of proper permission validation allows malicious or compromised local accounts to execute commands that should be restricted to administrators or privileged processes. The vulnerability is classified as a direct violation of the principle of least privilege and represents a fundamental breakdown in the security architecture.
The operational impact of CVE-2023-42745 is severe and potentially catastrophic for telecom infrastructure security. Local privilege escalation allows attackers who have gained access to any local account to potentially gain administrative control over the telecommunications service. This could enable unauthorized modification of network configurations, interception of communications, manipulation of billing systems, or complete compromise of the service infrastructure. The lack of additional execution privileges required for exploitation makes this vulnerability particularly dangerous as it can be exploited by attackers with minimal initial access. The implications extend beyond simple privilege escalation to potential network disruption, data breaches, and service denial.
This vulnerability aligns with CWE-284, which describes improper access control, and represents a classic example of inadequate authorization checks within service implementations. The ATT&CK framework categorizes this under privilege escalation techniques, specifically local privilege escalation where adversaries leverage service misconfigurations to gain elevated system access. Organizations should implement immediate mitigations including comprehensive access control reviews, mandatory permission validation for all service operations, and regular security audits of telecom service implementations. The remediation process requires strict adherence to security best practices including proper role-based access control implementation, regular privilege access reviews, and comprehensive testing of authorization mechanisms. Additionally, organizations should consider implementing monitoring solutions that can detect anomalous privilege escalation attempts and establish incident response procedures specifically tailored to address local privilege escalation vulnerabilities in telecommunications environments.