CVE-2023-40642 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-2023-40642 resides within the messaging component of a software system and represents a critical permission validation flaw that could enable unauthorized information disclosure. This issue falls under the category of insufficient authorization checks, which is commonly classified as CWE-284 - "Improper Access Control" within the Common Weakness Enumeration framework. The vulnerability manifests when the messaging system fails to properly verify whether a requesting entity possesses the necessary permissions to access specific message content or metadata, creating a potential pathway for information leakage.
The technical nature of this flaw involves a missing permission check mechanism that should validate user credentials and access rights before granting access to messaging resources. Attackers can exploit this weakness by leveraging existing system access without requiring additional privileges or elevated execution rights, making the vulnerability particularly dangerous as it can be exploited from within the system boundaries. The vulnerability's impact extends beyond simple data exposure, as it can potentially allow attackers to access sensitive communication data, message queues, or metadata that should be restricted to authorized users only. This type of vulnerability aligns with ATT&CK technique T1074.001 - "Data Staged" and T1005 - "Data from Local System" as it enables unauthorized data collection from within the system.
The operational impact of CVE-2023-40642 could be severe for organizations relying on secure messaging systems, as it may result in unauthorized access to confidential communications, personal data, or business-sensitive information. The vulnerability's exploitation requires no additional execution privileges, meaning that any user with basic access to the messaging system could potentially access restricted information. This creates a significant risk for environments where multiple users share the same system or where privilege escalation is not properly enforced. The vulnerability could affect various messaging protocols and implementations, including email systems, instant messaging platforms, or enterprise communication tools that rely on proper access control mechanisms. Organizations may experience compliance violations and data breach incidents if this vulnerability is exploited, particularly in regulated environments where information access control is mandated by standards such as GDPR, HIPAA, or SOX.
Mitigation strategies for this vulnerability should focus on implementing comprehensive access control mechanisms that enforce proper permission checks at all messaging system entry points. System administrators should ensure that all messaging components perform rigorous authentication and authorization validation before granting access to message content or metadata. The implementation should include mandatory permission verification for all messaging operations, proper role-based access controls, and regular security audits of access control mechanisms. Additionally, organizations should consider implementing logging and monitoring solutions to detect unauthorized access attempts and establish clear audit trails for messaging system activities. The remediation process should involve code review and testing of permission validation logic, ensuring that all message access points properly validate user credentials and access rights before granting information access. Security patches should be applied promptly, and system configurations should be reviewed to ensure that default access levels are appropriately restrictive and that unnecessary permissions are not granted to users or processes.