CVE-2023-33879 in SC9863A
Summary
by MITRE • 07/12/2023
In music 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 • 08/02/2023
The vulnerability identified as CVE-2023-33879 resides within a music service application where a critical missing permission check has been discovered. This flaw represents a significant security weakness that allows unauthorized access to sensitive local information without requiring any additional execution privileges or elevated permissions. The vulnerability falls under the category of insufficient permission checks, which is classified as CWE-284 according to the Common Weakness Enumeration framework. The absence of proper access controls means that any local user or process can potentially retrieve confidential data that should be restricted to authorized entities only.
The technical implementation of this vulnerability stems from inadequate validation of user permissions before granting access to sensitive information within the music service. When applications fail to properly verify whether a requesting entity has appropriate authorization levels, they create pathways for information disclosure attacks. In this specific case, the music service does not enforce proper permission boundaries when accessing local data, allowing any process running with basic user privileges to obtain information that should be protected. The flaw operates at the application level where access control mechanisms have been either omitted or improperly implemented, creating a direct avenue for unauthorized data retrieval.
The operational impact of this vulnerability extends beyond simple information disclosure, as it represents a fundamental breakdown in the application's security architecture. Local information disclosure can expose sensitive user data including but not limited to music library contents, playback history, user preferences, and potentially personal identifiers. Attackers could leverage this vulnerability to gain insights into user behavior patterns, music preferences, and other personally identifiable information that could be used for social engineering or further exploitation. The lack of additional execution privileges required means that even basic local users can exploit this weakness, making the attack surface significantly broader than typical permission-related vulnerabilities.
Security professionals should consider this vulnerability in the context of the ATT&CK framework, specifically under the information gathering and credential access tactics. The missing permission check creates an environment where adversaries can perform reconnaissance activities without requiring elevated privileges, potentially leading to more sophisticated attacks. Organizations should implement comprehensive access control measures including proper input validation, privilege separation, and regular security audits to identify and remediate such issues. The vulnerability also highlights the importance of following secure coding practices and conducting thorough security testing during the development lifecycle to prevent unauthorized access to local resources.
Mitigation strategies should focus on implementing robust permission checking mechanisms throughout the music service application. This includes enforcing proper access control lists, implementing role-based access controls, and ensuring that all data access operations include appropriate authorization verification. Additionally, organizations should conduct regular security assessments, implement proper logging and monitoring for unauthorized access attempts, and maintain up-to-date security patches. The remediation process should involve code reviews to identify similar permission checks throughout the application, as well as implementing automated security testing to prevent similar issues from being introduced in future updates. Proper configuration management and principle of least privilege enforcement should also be implemented to minimize the potential impact of such vulnerabilities in the event of exploitation.