CVE-2023-30922 in SC9863A
Summary
by MITRE • 07/12/2023
In messaging 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-2023-30922 represents a critical authorization flaw within a messaging service component that fundamentally undermines the security posture of the affected system. This issue stems from a missing permission check that allows unauthorized local access to sensitive information. The vulnerability specifically affects systems where messaging services operate with insufficient access controls, creating a pathway for information disclosure that does not require elevated privileges or additional malicious execution. The absence of proper permission validation creates a direct attack surface that can be exploited by any local user with basic system access, making this particularly concerning in multi-user environments or shared computing resources where privilege separation is essential for maintaining data confidentiality.
The technical implementation of this vulnerability manifests as a failure in the messaging service's access control mechanisms, where the system does not properly verify whether a requesting process or user has adequate authorization to access specific message data or metadata. This missing validation typically occurs at the application layer where the service fails to perform necessary permission checks before granting access to message queues, communication channels, or related data structures. The flaw operates at a fundamental level where the system assumes that any local process can access messaging resources without proper authorization verification, creating a dangerous assumption that violates core security principles of least privilege and access control. According to CWE classification, this vulnerability maps to CWE-284: Improper Access Control, which specifically addresses insufficient access control mechanisms that allow unauthorized access to resources. The attack vector is particularly dangerous because it requires no additional execution privileges beyond basic local access, making it accessible to any user with standard system permissions.
The operational impact of CVE-2023-30922 extends beyond simple information disclosure to potentially compromise the integrity and confidentiality of messaging communications within the affected system. Local information disclosure can expose sensitive communication data including user messages, metadata about communication patterns, system configuration details, or even authentication tokens that may be stored within the messaging service. This exposure could enable attackers to gather intelligence about system users, communication relationships, or potentially identify other vulnerabilities within the broader system architecture. The lack of additional execution privileges required for exploitation means that even low-privilege local accounts can leverage this vulnerability, significantly broadening the potential attack surface. From an ATT&CK framework perspective, this vulnerability aligns with techniques such as T1083: File and Directory Discovery and T1005: Data from Local System, where attackers can gather information about the local system without requiring elevated privileges. The impact is particularly severe in enterprise environments where messaging services often contain sensitive business communications, personal data, or operational information that could be exploited for further attacks or business disruption.
Mitigation strategies for CVE-2023-30922 must focus on implementing proper authorization controls and access validation within the messaging service architecture. Organizations should immediately implement permission checks that validate user credentials and access rights before allowing access to messaging resources, ensuring that all access attempts are properly authenticated and authorized. System administrators should review and enforce strict access controls for messaging services, implementing role-based access controls that limit which users or processes can access specific message queues or communication channels. The fix should include comprehensive logging of access attempts to detect unauthorized access patterns and provide audit trails for security monitoring. Additionally, organizations should conduct thorough security assessments of their messaging services to identify other potential missing permission checks or access control vulnerabilities. Regular security updates and patch management processes should be strengthened to ensure timely deployment of security fixes for such authorization flaws. Network segmentation and principle of least privilege should be enforced to limit the potential impact of any successful exploitation attempts, while monitoring systems should be enhanced to detect unusual access patterns that may indicate exploitation of this vulnerability. The implementation of these controls aligns with security standards such as NIST SP 800-53 and ISO 27001, which emphasize the importance of proper access control mechanisms and authorization validation in protecting sensitive information systems.