CVE-2019-2125 : What You Need to Know

Android operating system vulnerability allowing privilege escalation through overlay attack.

Understanding CVE-2019-2125

What is CVE-2019-2125?

The ChangeDefaultDialerDialog.java file in Android OS has a vulnerability that could enable attackers to gain higher privileges through an overlay attack, granting additional privileges to local applications without user consent.

The Impact of CVE-2019-2125

Exploiting this vulnerability requires user interaction and affects Android versions 7.0 to 9, potentially leading to unauthorized privilege escalation.

Technical Details of CVE-2019-2125

Vulnerability Description

The vulnerability in ChangeDefaultDialerDialog.java allows for local privilege escalation through overlay attacks, potentially granting unauthorized privileges to local apps.

Affected Systems and Versions

Product: Android
Versions Affected: Android-7.0, Android-7.1.1, Android-7.1.2, Android-8.0, Android-8.1, Android-9

Exploitation Mechanism

Attackers can exploit this vulnerability through an overlay attack, manipulating the ChangeDefaultDialerDialog.java file to gain elevated privileges.

Mitigation and Prevention

Immediate Steps to Take

Update Android devices to the latest available security patches to mitigate the vulnerability.
Exercise caution while granting permissions to applications that request access to sensitive features.

Long-Term Security Practices

Regularly update the Android OS and applications to ensure protection against known vulnerabilities.
Implement security best practices such as avoiding granting unnecessary permissions to apps.

Patching and Updates

Stay informed about security bulletins and updates released by Android to address vulnerabilities like CVE-2019-2125.