CVE-2020-0352 in Android
Summary
by MITRE
In MediaProvider, there is a possible permissions bypass due to SQL injection. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-132074310
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Analysis
by VulDB Data Team • 09/18/2020
The vulnerability identified as CVE-2020-0352 resides within the MediaProvider component of Android operating systems, specifically affecting Android 11 and earlier versions. This flaw represents a critical security weakness that stems from improper input validation within the database query processing mechanisms. The vulnerability manifests as a SQL injection vulnerability that allows unauthorized access to protected media data stored within the system's media provider database.
The technical exploitation of this vulnerability occurs through malicious SQL injection payloads that manipulate the MediaProvider's database queries. When the system processes user input through media-related operations, the lack of proper sanitization enables attackers to inject malicious SQL commands that bypass normal access controls. This vulnerability is classified as a permissions bypass because it allows unauthorized access to media files that should be restricted to specific applications or users. The flaw does not require any additional execution privileges beyond what is normally available to applications, making it particularly dangerous as it can be exploited by any application with basic media access permissions.
From an operational impact perspective, this vulnerability creates a significant risk for user privacy and data confidentiality. The local information disclosure that results from this vulnerability means that attackers can access media files such as photos, videos, and audio recordings stored on the device without proper authorization. This affects not only personal media content but potentially sensitive business data or confidential information stored in the media provider database. The vulnerability operates silently without requiring user interaction, making it particularly stealthy and difficult to detect. According to CWE classification, this represents a CWE-89 SQL Injection vulnerability, which is a well-documented weakness in database query processing that has been exploited in numerous security incidents across various platforms.
The exploitation of this vulnerability aligns with several ATT&CK techniques including T1074 Data Staged and T1046 Network Service Scanning, as attackers can leverage the media provider access to gather information about the device's media content. The lack of user interaction requirement makes this vulnerability particularly concerning as it can be exploited automatically by malicious applications or through compromised applications that have legitimate access to media provider APIs. The vulnerability affects the core Android framework's media handling capabilities, which are fundamental to device functionality, making it a high-impact issue that requires immediate attention.
Mitigation strategies for this vulnerability primarily focus on system updates and patch management. Android users should ensure they are running the latest security patches that address this specific SQL injection weakness in MediaProvider. The patch implementation typically involves strengthening input validation mechanisms within the database query processing code and implementing proper parameterized queries to prevent malicious SQL injection attempts. Organizations should also consider implementing additional monitoring for unauthorized media access patterns and application behavior that might indicate exploitation attempts. Security teams should conduct thorough vulnerability assessments of their Android device management policies and ensure that only necessary applications have access to media provider APIs. The vulnerability's classification as a permissions bypass also emphasizes the importance of principle of least privilege implementations and regular security audits of Android application permissions and access controls.