CVE-2020-0359 in Android
Summary
by MITRE
In GLESRenderEngine, there is a possible out of bounds read due to a buffer overflow. 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-150303018
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Analysis
by VulDB Data Team • 09/18/2020
The vulnerability identified as CVE-2020-0359 resides within the GLESRenderEngine component of Android operating systems, specifically affecting Android 11 builds. This issue represents a critical buffer overflow condition that manifests as an out-of-bounds read error, fundamentally compromising the integrity of memory operations within the graphics rendering pipeline. The vulnerability stems from inadequate bounds checking mechanisms that fail to validate buffer access limits during graphics processing operations, creating a potential attack surface for malicious actors seeking to extract sensitive information from system memory.
The technical flaw manifests when the GLESRenderEngine processes graphics commands that exceed allocated buffer boundaries, allowing unauthorized memory access patterns that can reveal confidential data stored in adjacent memory regions. This type of vulnerability falls under CWE-125, which specifically addresses out-of-bounds read conditions, and operates at the intersection of graphics processing and memory management within the Android framework. The vulnerability does not require any special privileges or user interaction to exploit, making it particularly dangerous as it can be leveraged by any local process with access to the graphics rendering subsystem. Attackers can potentially extract sensitive information such as cryptographic keys, user credentials, or system configuration data that resides in memory adjacent to the vulnerable buffer.
The operational impact of this vulnerability extends beyond simple information disclosure, as it represents a fundamental weakness in Android's graphics security model that could enable more sophisticated attacks. An attacker exploiting this vulnerability could potentially gather sufficient information to bypass security mechanisms, conduct further reconnaissance, or use the extracted data to facilitate additional attacks within the system. The lack of required user interaction makes this vulnerability particularly concerning for mobile environments where applications and services operate with varying privilege levels. This issue affects the core rendering engine that handles graphics operations for both system UI elements and third-party applications, amplifying the potential attack surface and making it a critical concern for Android device security.
Mitigation strategies for CVE-2020-0359 should focus on implementing robust buffer validation mechanisms within the GLESRenderEngine and related graphics components. System administrators and device manufacturers should prioritize applying security patches released by Google as part of the Android Security Bulletins, which typically include memory bounds checking improvements and enhanced validation routines. The implementation of address space layout randomization and stack canaries can provide additional defense-in-depth measures against exploitation attempts. Organizations should also consider monitoring for unusual graphics processing patterns that might indicate exploitation attempts, as well as implementing application sandboxing to limit the potential damage from any successful attacks. Regular security assessments of graphics processing components and adherence to secure coding practices that prevent buffer overflow conditions should be maintained as part of comprehensive mobile security programs. The vulnerability also highlights the importance of continuous security testing of core system components and the need for improved static and dynamic analysis tools that can detect such memory safety issues in graphics rendering engines.