CVE-2023-40648 in SC9863A
Summary
by MITRE • 10/25/2023
In Messaging, there is a possible 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 • 10/25/2023
The vulnerability identified as CVE-2023-40648 resides within the messaging component of a software system and represents a critical permission enforcement flaw that undermines the security model's integrity. This issue manifests as a missing permission check that allows unauthorized access to sensitive information, fundamentally compromising the principle of least privilege that governs secure system design. The vulnerability specifically affects the messaging subsystem where proper access controls should be enforced to prevent unauthorized entities from accessing confidential data.
The technical flaw in CVE-2023-40648 stems from inadequate validation of user permissions within the messaging framework, creating an exploitable gap in the authorization mechanism. When the system processes messaging operations, it fails to verify whether the requesting entity possesses the necessary privileges to access specific message content or metadata. This absence of permission verification creates a path for local attackers to bypass normal access controls and extract information that should remain restricted. The vulnerability is classified as a missing permission check, which aligns with CWE-284, which specifically addresses improper access control mechanisms in software systems.
The operational impact of this vulnerability extends beyond simple information disclosure, as it represents a fundamental breakdown in the system's security architecture that could enable more sophisticated attacks. Local information disclosure through this flaw allows adversaries with basic user privileges to access sensitive data that should be protected by proper access controls, potentially exposing communication content, user identifiers, or system metadata. This type of vulnerability is particularly dangerous because it requires no additional execution privileges beyond normal user access, making it accessible to any local user who can interact with the messaging component.
Security professionals should recognize this vulnerability as a potential entry point for lateral movement within systems, as the information disclosed could provide attackers with additional context for targeting other system components. The vulnerability's classification under ATT&CK technique T1074.001 for data staging highlights its role in information gathering activities that precede more advanced attacks. Organizations should implement immediate mitigations including thorough review and enforcement of access controls, implementation of proper permission checking mechanisms, and comprehensive auditing of messaging component access patterns to detect any unauthorized access attempts.
Mitigation strategies for CVE-2023-40648 should focus on strengthening the messaging component's authorization framework through comprehensive permission validation at all access points. System administrators must ensure that all messaging operations include proper authentication and authorization checks before any data access occurs, implementing a robust permission model that aligns with established security frameworks. Regular security assessments should be conducted to verify that access controls are properly enforced, and monitoring solutions should be deployed to detect anomalous access patterns that might indicate exploitation attempts. The vulnerability demonstrates the critical importance of maintaining strict access control boundaries within messaging systems, as even seemingly innocuous components can become significant security risks when proper authorization checks are absent.