CVE-2017-0475 : What You Need to Know

Android recovery verifier vulnerability allows malicious applications to execute arbitrary code on the device's kernel, potentially leading to a permanent compromise.

Understanding CVE-2017-0475

Android devices running versions 4.4.4 to 7.1.1 are affected by a critical elevation of privilege vulnerability in the recovery verifier.

What is CVE-2017-0475?

The recovery verifier in Android has a vulnerability that could be exploited by a malicious application to run any code on the device's kernel. This critical issue could result in a permanent compromise of the device, necessitating the reflash of the operating system for a fix.

The Impact of CVE-2017-0475

Allows a local malicious application to execute arbitrary code within the kernel context
Could lead to a permanent compromise of the device
Requires reflashing the operating system for repair

Technical Details of CVE-2017-0475

Android recovery verifier vulnerability details

Vulnerability Description

An elevation of privilege vulnerability in the recovery verifier could enable a local malicious application to execute arbitrary code within the context of the kernel.

Affected Systems and Versions

Android 4.4.4
Android 5.0.2
Android 5.1.1
Android 6.0
Android 6.0.1
Android 7.0
Android 7.1.1

Exploitation Mechanism

The vulnerability allows malicious applications to exploit the recovery verifier, gaining the ability to run unauthorized code on the device's kernel.

Mitigation and Prevention

Steps to address and prevent CVE-2017-0475

Immediate Steps to Take

Apply security patches provided by the device manufacturer
Avoid downloading apps from untrusted sources
Regularly update the device's operating system

Long-Term Security Practices

Implement app whitelisting and blacklisting policies
Use mobile device management solutions for enhanced security
Educate users about safe app installation practices

Patching and Updates

Google released security patches addressing this vulnerability
Ensure all affected devices are updated with the latest security fixes