CVE-2024-2364 in Musicshelf
Summary
by MITRE • 03/11/2024
A vulnerability classified as problematic has been found in Musicshelf 1.0/1.1 on Android. Affected is an unknown function of the file androidmanifest.xml of the component Backup Handler. The manipulation leads to exposure of backup file to an unauthorized control sphere. It is possible to launch the attack on the physical device. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-256320.
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Analysis
by VulDB Data Team • 04/08/2024
This vulnerability resides within the Musicshelf 1.0/1.1 Android application where an improper configuration in the androidmanifest.xml file affects the Backup Handler component. The flaw allows for unauthorized access to backup files that should remain protected, creating a significant security risk for users who store sensitive data within the application. The vulnerability is particularly concerning because it operates at the system level through the Android backup mechanism, which is designed to provide automatic data recovery but becomes a security liability when misconfigured.
The technical implementation flaw stems from the lack of proper backup configuration within the Android manifest file, specifically in the Backup Handler component. When Android applications are configured to allow backup operations, they typically include the android:allowBackup="true" attribute in their manifest. However, this setting can expose application data to unauthorized parties if proper security measures are not implemented. The vulnerability manifests when the backup handler component fails to properly restrict access to backup files, allowing malicious actors to extract sensitive information from the application's backup data. This issue falls under CWE-200, which addresses improper exposure of sensitive information, and represents a direct violation of the principle of least privilege in system design.
The operational impact of this vulnerability extends beyond simple data exposure, as it enables attackers to gain unauthorized access to potentially sensitive user information stored within the Musicshelf application. The attack can be launched directly on the physical device, eliminating the need for network-based exploitation and making it particularly dangerous in environments where devices may be lost or stolen. Attackers can leverage the exposed backup files to extract user data, including music library information, user preferences, and potentially authentication tokens or other sensitive metadata that could be used for further exploitation. This vulnerability aligns with ATT&CK technique T1213.002, which covers data from local system backups, and represents a significant risk to user privacy and data integrity.
The public disclosure of this vulnerability through VDB-256320 indicates that malicious actors may already be exploiting this weakness in the wild. The fact that the exploit is publicly available means that attackers can easily reproduce the vulnerability without requiring advanced technical skills or specialized tools. Organizations and users should immediately implement mitigation strategies including disabling backup functionality for vulnerable applications, ensuring proper manifest configurations, and implementing additional security controls such as encryption of sensitive data. The vulnerability also highlights the importance of proper Android security configurations and the need for developers to follow secure coding practices when implementing backup mechanisms. Users should regularly update their applications and monitor for security patches, while security teams should implement monitoring solutions to detect unauthorized access attempts to backup files.