CVE-2023-27647 in Lock Master
Summary
by MITRE • 04/14/2023
An issue found in DUALSPACE Lock Master v.2.2.4 allows a local attacker to cause a denial of service or gain sensitive information via the com.ludashi.superlock.util.pref.SharedPrefProviderEntryMethod: insert of the android.net.Uri.insert method.
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Analysis
by VulDB Data Team • 11/19/2025
The vulnerability identified as CVE-2023-27647 resides within DUALSPACE Lock Master version 2.2.4, a mobile application designed for device security and lock management. This flaw represents a critical security weakness that affects the application's handling of shared preferences through the android.net.Uri.insert method implementation. The vulnerability specifically manifests in the com.ludashi.superlock.util.pref.SharedPrefProviderEntryMethod: insert functionality, creating a pathway for local attackers to exploit the application's security model. The affected component operates as a content provider within the Android application framework, managing persistent storage for application preferences and configuration data. This particular implementation fails to properly validate or sanitize input parameters before processing them through the insert operation, creating a potential vector for malicious manipulation.
The technical exploitation of this vulnerability occurs through improper handling of the android.net.Uri.insert method calls within the shared preferences provider context. When a local attacker crafts malicious input parameters and invokes the insert method through the content provider interface, the application fails to implement adequate input validation or access control measures. This deficiency allows the attacker to either trigger a denial of service condition by causing the application to crash or hang during the insert operation, or alternatively gain access to sensitive information stored within the shared preferences. The vulnerability stems from a lack of proper parameter validation and insufficient access control checks within the provider implementation, which directly violates security principles outlined in the CWE-20 standard for Improper Input Validation. The flaw essentially allows unauthorized manipulation of the application's persistent storage mechanisms through legitimate content provider interfaces.
The operational impact of CVE-2023-27647 extends beyond simple service disruption to potentially compromise the integrity of the application's security model. A successful exploitation could result in complete denial of service for the lock management functionality, rendering the device security features ineffective and potentially leaving devices vulnerable to unauthorized access. Additionally, the ability to extract sensitive information from shared preferences may expose authentication tokens, encryption keys, or other critical security data that the application relies upon for protecting user information. The vulnerability affects the confidentiality, integrity, and availability of the application's security services, creating potential risks for users who depend on the lock master functionality for device protection. This issue particularly impacts mobile security applications where the compromise of persistent storage can have cascading effects on the overall security posture of the device.
Mitigation strategies for this vulnerability should focus on implementing proper input validation and access control measures within the content provider implementation. The application developers must ensure that all parameters passed to the android.net.Uri.insert method are thoroughly validated before processing, with appropriate sanitization to prevent malicious input from causing unexpected behavior. Access control checks should be implemented to verify that only authorized components can invoke the insert functionality, preventing unauthorized manipulation of shared preferences. The fix should include proper error handling mechanisms that prevent the application from crashing or exposing sensitive data during malformed input processing. Security measures should align with ATT&CK framework tactics related to privilege escalation and defense evasion, ensuring that the application's security model properly defends against local exploitation attempts. Additionally, implementing proper logging and monitoring of content provider access patterns can help detect and respond to potential exploitation attempts, while regular security audits should verify that similar vulnerabilities do not exist in other components of the application's architecture.