0️Common Android 0day

Zero-day vulnerabilities are previously unknown security flaws in software or hardware that are exploited by attackers before a fix is available. Android zero-day vulnerabilities are particularly concerning because they can be used to compromise a large number of devices before a patch is issued. Here’s an overview of common Android zero-day vulnerabilities, including their typical characteristics, impacts, and examples.

Characteristics of Android Zero-Day Vulnerabilities

1. Unknown to the Vendor

   • The vulnerability is not known to the Android development team or security researchers, so no patches or fixes are available.

2. Exploited in the Wild

   • The vulnerability is actively being used by attackers to exploit devices, often in sophisticated attacks or targeted campaigns.

3. Critical Impact

   • Zero-day vulnerabilities often have significant security implications, such as allowing remote code execution, privilege escalation, or unauthorized access to sensitive data.

4. Difficulty in Detection

   • These vulnerabilities can be challenging to detect because they are not documented or widely known, making it hard for traditional security tools to identify them.

Examples of Android Zero-Day Vulnerabilities

1. Android 0-Day in 2019

   • Description: A zero-day vulnerability in the Android framework allowed attackers to gain elevated privileges and execute arbitrary code. It was exploited through maliciously crafted applications.

   • Impact: Potential for privilege escalation and arbitrary code execution, affecting the security of the device and user data.

2. CVE-2020-0040

   • Description: A vulnerability in the Android Media Framework that allowed attackers to exploit a flaw in media processing components to execute arbitrary code.

   • Impact: Remote code execution when a user opens a specially crafted media file, potentially leading to full device compromise.

3. CVE-2020-0318

   • Description: A vulnerability in Android’s media library that permitted a remote attacker to exploit the flaw through specially crafted media files.

   • Impact: Remote code execution with media files, affecting device integrity and user data.

4. CVE-2020-0069

   • Description: A vulnerability in Android’s Bluetooth subsystem allowed attackers to execute arbitrary code by sending specially crafted Bluetooth packets.

   • Impact: Potential for remote code execution and unauthorized access through Bluetooth communication.

5. CVE-2021-0930

   • Description: A zero-day vulnerability in the Android kernel that allowed privilege escalation due to improper handling of certain system calls.

   • Impact: Elevation of privileges, potentially leading to complete control over the device and its data.

Impact of Android Zero-Day Vulnerabilities

• Remote Code Execution: Attackers can execute arbitrary code on the device, leading to unauthorized access and control.

• Privilege Escalation: Gaining elevated permissions to bypass security restrictions and access sensitive data.

• Data Theft: Exposure of personal or confidential information, including contacts, messages, and financial details.

• Device Compromise: Full control over the device, potentially using it for malicious purposes or participating in broader attacks.