CVE-2020-0229 in Android
Summary
by MITRE
There is a possible out of bounds write due to an incorrect bounds check.Product: AndroidVersions: Android SoCAndroid ID: A-156333725
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Analysis
by VulDB Data Team • 09/18/2020
The vulnerability identified as CVE-2020-0229 represents a critical out-of-bounds write flaw affecting Android-based systems, specifically targeting Android SoC implementations. This issue stems from an insufficient bounds checking mechanism within the system's memory management operations, creating a potential pathway for malicious code execution. The vulnerability manifests in the way the system validates memory boundaries during data processing operations, allowing for unauthorized memory access patterns that could lead to system instability or arbitrary code execution. The Android ID A-156333725 specifically identifies this issue within the Android security framework, indicating its integration with the broader Android security architecture and its potential impact across various Android SoC implementations.
The technical root cause of this vulnerability lies in improper validation of array indices or buffer limits during memory operations. When the system processes data structures, it fails to adequately verify that write operations remain within allocated memory boundaries, creating a condition where malicious input could trigger memory corruption. This flaw typically occurs in low-level system components responsible for handling data buffers, particularly in kernel-space operations or hardware abstraction layers. The incorrect bounds check allows for memory writes that extend beyond intended buffer limits, potentially overwriting adjacent memory locations or critical system data structures. This type of vulnerability falls under the CWE-787 category of "Out-of-bounds Write" and represents a common attack vector in mobile security exploitation, particularly when targeting system-level components that handle untrusted input data.
The operational impact of CVE-2020-0229 extends beyond simple memory corruption, as it provides potential attackers with pathways for privilege escalation and system compromise. An attacker exploiting this vulnerability could manipulate system memory to execute arbitrary code with elevated privileges, potentially gaining full control over the device. The vulnerability's presence in Android SoC implementations means it affects a broad range of devices, from smartphones to tablets and other mobile platforms that utilize these specific system components. This flaw creates opportunities for persistent threats, as successful exploitation could lead to the installation of malware or the establishment of backdoors that persist across device reboots. The vulnerability's potential for remote code execution makes it particularly dangerous in mobile environments where devices frequently interact with untrusted networks and applications.
Mitigation strategies for CVE-2020-0229 should focus on both immediate patch deployment and defensive system hardening measures. Android security updates addressing this vulnerability typically involve correcting the bounds checking logic in affected system components, often requiring kernel-level modifications to ensure proper memory boundary validation. Organizations should prioritize immediate deployment of security patches provided by device manufacturers and carriers, as the vulnerability's exploitation potential increases with device exposure to untrusted environments. Additional defensive measures include implementing runtime memory protection mechanisms, enabling address space layout randomization, and deploying application sandboxing techniques to limit the impact of potential exploitation attempts. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and execution of malicious code, requiring comprehensive security monitoring and incident response procedures to detect and respond to exploitation attempts effectively.