CVE-2020-0480 : What You Need to Know

This CVE-2020-0480 article provides an overview of a permissions bypass vulnerability in Android-11 that could lead to local escalation of privilege.

Understanding CVE-2020-0480

This CVE identifies a potential elevation of privilege issue in Android-11 due to a missing permission check in DocumentsProvider.java.

What is CVE-2020-0480?

In callUnchecked of DocumentsProvider.java, a permissions bypass vulnerability exists, allowing a caller to copy, move, or delete files accessible to DocumentsProvider on Android-11 with user interaction.

The Impact of CVE-2020-0480

The vulnerability may result in a local escalation of privilege, enabling an attacker to perform restricted file operations without additional execution privileges.

Technical Details of CVE-2020-0480

This section delves into the specifics of the vulnerability in Android-11.

Vulnerability Description

The vulnerability stems from a missing permission check in DocumentsProvider.java, facilitating unauthorized access to files managed by DocumentsProvider.

Affected Systems and Versions

Affected Product: Android
Affected Version: Android-11

Exploitation Mechanism

The flaw enables an attacker to bypass permissions and manipulate files accessible to DocumentsProvider without requiring extra execution privileges, contingent on user interaction.

Mitigation and Prevention

Learn how to address and prevent security issues related to CVE-2020-0480.

Immediate Steps to Take

Apply patches or updates provided by the vendor promptly.
Educate users on safe browsing practices to reduce the likelihood of exploitation.

Long-Term Security Practices

Implement least privilege access controls to restrict file operations.
Regularly monitor and audit file access permissions to detect anomalies.

Patching and Updates

To mitigate the vulnerability effectively, ensure timely installation of security patches and updates from the vendor.