CVE-2020-0445 in Android
Summary
by MITRE • 11/10/2020
There is a possible out of bounds write due to a missing bounds check.Product: AndroidVersions: Android SoCAndroid ID: A-168264527
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 12/04/2020
The vulnerability identified as CVE-2020-0445 represents a critical out-of-bounds write flaw that exists within Android system components, specifically affecting Android SoC implementations. This issue stems from a fundamental missing bounds check in the software architecture, creating a potential pathway for malicious actors to execute arbitrary code or cause system instability. The vulnerability manifests in the form of an out-of-bounds write operation, which occurs when the system attempts to write data beyond the allocated memory boundaries, potentially corrupting adjacent memory regions and compromising system integrity.
The technical root cause of this vulnerability lies in insufficient input validation and boundary checking mechanisms within the affected Android components. When processing specific data inputs, the system fails to verify that the write operations remain within predetermined memory limits, allowing for unauthorized memory modifications. This flaw aligns with CWE-787, which specifically addresses out-of-bounds writes, and represents a classic example of memory safety issues that have plagued software systems for decades. The missing bounds check creates a condition where attacker-controlled data can trigger memory corruption, potentially leading to privilege escalation or system compromise.
From an operational perspective, this vulnerability presents significant risks to Android device security and stability. The impact extends beyond simple system crashes, as the out-of-bounds write can be exploited to execute arbitrary code with elevated privileges, potentially enabling full system compromise. Attackers could leverage this vulnerability to install malicious applications, access sensitive data, or manipulate system functions without proper authorization. The vulnerability affects Android SoC implementations, which means that devices utilizing these system-on-chip architectures are particularly at risk, potentially exposing millions of devices to exploitation. The nature of the flaw suggests it could be triggered through various attack vectors including malicious applications, network-based attacks, or even physical device compromise scenarios.
Security mitigations for CVE-2020-0445 should focus on implementing comprehensive bounds checking mechanisms and memory protection features. Organizations should prioritize applying the latest security patches provided by Android vendors, as these updates typically include the necessary code modifications to prevent the out-of-bounds write conditions. Additionally, implementing runtime memory protection mechanisms such as stack canaries, address space layout randomization, and memory integrity checks can significantly reduce the exploitability of such vulnerabilities. The implementation of defensive programming practices including input validation, proper memory management, and regular security code reviews should be standard practice to prevent similar issues from occurring. Network security teams should also monitor for indicators of compromise related to this vulnerability and ensure that device management policies include mandatory security updates to prevent exploitation. This vulnerability highlights the critical importance of memory safety in system security and reinforces the need for adherence to secure coding practices as outlined in industry standards and frameworks.