CVE-2023-30924 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-2023-30924 represents a critical permission bypass flaw within a messaging service implementation that exposes sensitive data through inadequate access controls. This issue stems from a missing permission check mechanism that fails to validate user authorization before granting access to confidential information. The vulnerability exists at the application level where the messaging service does not properly enforce mandatory access controls, allowing unauthorized local entities to retrieve information that should be restricted. According to CWE-284, this manifests as an improper access control condition where the system lacks proper authorization checks, creating a pathway for information disclosure attacks. The absence of permission validation creates a fundamental security weakness that undermines the principle of least privilege and could enable attackers to access data they should not be permitted to view.
The technical exploitation of this vulnerability requires minimal privileges since it operates at the local level without necessitating additional execution capabilities. An attacker with local access can leverage this missing permission check to extract sensitive information from the messaging service, potentially including user communications, system metadata, or other confidential data. The flaw operates through a straightforward bypass mechanism where the system fails to verify whether the requesting entity has appropriate authorization rights before returning requested information. This type of vulnerability aligns with ATT&CK technique T1074.001, which describes data staging through local data collection, where adversaries gather sensitive information from local system resources. The vulnerability's impact is particularly concerning because it does not require escalated privileges or complex exploitation techniques, making it accessible to attackers with basic local system access.
The operational impact of CVE-2023-30924 extends beyond simple information disclosure, potentially compromising system integrity and user privacy across the affected messaging service. Local information disclosure can lead to cascading security issues where attackers gain insights into system configurations, user behaviors, or communication patterns that could facilitate further attacks. The vulnerability's presence in a messaging service environment creates particular risk since such systems often handle sensitive communications, personal data, and potentially confidential business information. Organizations may experience regulatory compliance violations if this vulnerability results in unauthorized data access, especially in environments governed by standards such as gdpr, hipaa, or pci dss. The lack of additional execution privileges required for exploitation means that even low-privilege local accounts can potentially access sensitive information, increasing the attack surface and making the vulnerability more dangerous in real-world scenarios.
Mitigation strategies for CVE-2023-30924 should focus on implementing robust permission validation mechanisms within the messaging service architecture. Security patches should enforce mandatory access controls that validate user authorization before any information is returned, ensuring that all access requests undergo proper authentication and authorization checks. Organizations should implement defense in depth approaches that include regular access control audits, privilege reviews, and monitoring for unauthorized access attempts. The fix should incorporate proper input validation and access control enforcement points that align with security best practices outlined in iso/iec 27001 and nist cybersecurity framework. Additionally, system administrators should conduct comprehensive security assessments to identify similar permission bypass vulnerabilities within the messaging service and related components. Continuous monitoring and logging of access attempts, combined with automated alerting for unauthorized access patterns, can help detect exploitation attempts and provide early warning of potential security incidents. Regular security training for development teams on secure coding practices and access control implementation can prevent similar vulnerabilities from being introduced in future versions of the messaging service.