CVE-2020-0130 in Android
Summary
by MITRE
In screencap, there is a possible command injection due to improper input validation. This could lead to local escalation of privilege in a system process with User execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-123230379
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 09/18/2020
The vulnerability identified as CVE-2020-0130 resides within the screencap component of Android operating systems, specifically affecting Android 11 builds. This issue represents a command injection flaw that emerges from inadequate input validation mechanisms within the system's screen capture functionality. The vulnerability operates at a fundamental level where user-supplied data fails to undergo proper sanitization before being processed by system commands, creating an exploitable condition that can be leveraged by malicious actors.
The technical implementation of this vulnerability stems from the screencap utility's handling of command-line arguments and input parameters. When the system processes screen capture requests, it fails to properly validate or sanitize user-provided input before incorporating it into system commands. This improper input validation creates a path where maliciously crafted input can be interpreted as additional commands, allowing an attacker to execute arbitrary code with elevated privileges. The vulnerability specifically targets the system process that handles screen capture operations, which typically runs with elevated permissions, making it particularly dangerous for privilege escalation attacks.
The operational impact of CVE-2020-0130 extends beyond simple command injection to enable local privilege escalation, a critical security concern that allows attackers with basic user execution privileges to gain system-level access. This vulnerability does not require user interaction for exploitation, meaning it can be triggered automatically without direct user involvement, making it particularly stealthy and dangerous. The attack vector typically involves crafting malicious input parameters that manipulate the screencap utility's command processing, potentially allowing an attacker to execute commands with system-level privileges and potentially gain full control over the affected device.
Security researchers have classified this vulnerability under CWE-78, which specifically addresses "Improper Neutralization of Special Elements used in OS Command" within the Common Weakness Enumeration framework. The ATT&CK framework categorizes this issue under privilege escalation techniques, specifically within the T1068 category for "Exploitation for Privilege Escalation." The vulnerability's nature aligns with command injection patterns commonly exploited in mobile environments where system utilities are improperly sanitized, creating opportunities for attackers to escalate their privileges through legitimate system interfaces.
Mitigation strategies for CVE-2020-0130 should focus on implementing robust input validation mechanisms within the screencap utility and related system components. Android security patches typically address this by introducing proper sanitization of user inputs before command execution, ensuring that special characters and command delimiters are properly escaped or removed. Organizations should prioritize applying the latest Android security updates and patches, as Google has released fixes for this vulnerability in subsequent Android releases. Additional defensive measures include implementing application sandboxing, restricting system utility access, and monitoring for unusual command execution patterns that might indicate exploitation attempts. Network administrators should also consider implementing mobile device management policies that enforce security configurations and regularly audit system components for similar input validation issues that could present analogous security risks.