CVE-2023-42640 in SC7731E
Summary
by MITRE • 11/01/2023
In validationtools, 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 • 11/29/2023
The vulnerability identified as CVE-2023-42640 resides within the validationtools component where a critical missing permission check has been discovered. This flaw represents a significant security weakness that allows for unauthorized access to sensitive information without requiring any elevated privileges or additional execution capabilities. The validationtools module typically serves as a critical interface for verifying system integrity and validating various security parameters within the broader software ecosystem. The absence of proper permission validation creates an exploitable pathway that could be leveraged by malicious actors to extract confidential data from the system.
This vulnerability manifests as a failure in access control mechanisms that should normally enforce strict permission boundaries. The technical implementation lacks proper authorization checks that would typically validate whether the requesting entity has appropriate privileges to access specific resources. According to CWE standards, this corresponds to CWE-284 which addresses improper access control vulnerabilities where insufficient permission checks allow unauthorized access to protected resources. The flaw operates at a fundamental level where the system assumes that legitimate operations will not attempt to access restricted information, creating a dangerous assumption that can be easily exploited.
The operational impact of this vulnerability extends beyond simple information disclosure, as it represents a potential gateway for more sophisticated attacks. An attacker with local access could exploit this weakness to gather sensitive system information, potentially including configuration details, user credentials, or other confidential data that could be used to escalate privileges or conduct further reconnaissance. The lack of additional execution privileges required for exploitation means that even basic user accounts or unprivileged processes could potentially access restricted information, making this vulnerability particularly concerning in multi-user environments where information isolation is critical. This scenario aligns with ATT&CK technique T1087.001 which covers account discovery and T1005 which covers data from local system.
Mitigation strategies for CVE-2023-42640 should focus on implementing comprehensive access control measures throughout the validationtools component. The most effective approach involves adding strict permission validation checks that verify the identity and privileges of all entities attempting to access protected resources. Organizations should implement principle of least privilege enforcement where every access request is validated against appropriate authorization policies. Additionally, regular security audits should be conducted to identify similar permission gaps in other system components. The remediation process should include code reviews specifically focused on access control implementation and integration of automated tools that can detect missing permission checks during the development lifecycle. System administrators should also consider implementing monitoring solutions that can detect anomalous access patterns that might indicate exploitation attempts against this vulnerability.