CVE-2020-0098 : Security Advisory and Response

Android could be vulnerable to a permission bypass in navigateUpToLocked, potentially leading to local privilege escalation. No user interaction is required for exploitation.

Understanding CVE-2020-0098

CVE-2020-0098 is an elevation of privilege vulnerability impacting Android versions 8.0, 8.1, 9, and 10.

What is CVE-2020-0098?

In the ActivityStack.java file's navigateUpToLocked function, a confused deputy scenario exists, allowing a potential permission bypass and subsequent local privilege escalation without requiring additional execution privileges.

The Impact of CVE-2020-0098

Successful exploitation could result in an attacker escalating their privileges locally on the affected Android devices.

Technical Details of CVE-2020-0098

CVE-2020-0098 involves the following technical aspects:

Vulnerability Description

The vulnerability in navigateUpToLocked of ActivityStack.java allows a confused deputy scenario, leading to a permission bypass and local privilege escalation without the need for user interaction.

Affected Systems and Versions

Android versions 8.0, 8.1, 9, and 10 are affected by this vulnerability.

Exploitation Mechanism

The vulnerability can be exploited without requiring any additional execution privileges, enabling an attacker to elevate their privileges locally.

Mitigation and Prevention

To mitigate the risks associated with CVE-2020-0098, the following steps can be taken:

Immediate Steps to Take

Apply security patches provided by the Android platform promptly.
Monitor official Android security bulletins for updates and advisories.

Long-Term Security Practices

Regularly update Android devices with the latest security patches.
Implement proper permission configurations and access controls on Android devices.
Employ security best practices to prevent and detect privilege escalation attempts.

Patching and Updates

Ensure that Android devices are updated to the latest available versions with security patches.