CVE-2020-0486 Explained : Impact and Mitigation

Android contains a vulnerability in ContactsProvider2.java allowing potential privilege escalation to modify contact data without extra privileges, affecting Android-11.

Understanding CVE-2020-0486

This CVE discloses details of a possible permission bypass leading to a local escalation of privilege on Android devices.

What is CVE-2020-0486?

CVE-2020-0486 highlights an insecure default value in openAssetFileListener of ContactsProvider2.java, opening a window for a local attacker to elevate privileges and manipulate contact data without additional permissions.

The Impact of CVE-2020-0486

The CVE allows threat actors to exploit a security weakness in Android-11, potentially leading to unauthorized modification of contact information on affected devices.

Technical Details of CVE-2020-0486

The technical specifics regarding the vulnerability in Android-11 are as follows:

Vulnerability Description

The vulnerability exists in the openAssetFileListener of ContactsProvider2.java, where an insecure default value could be exploited for privilege escalation without needing additional execution privileges.

Affected Systems and Versions

Product: Android
Versions Affected: Android-11

Exploitation Mechanism

The vulnerability allows local attackers to bypass permissions, enabling them to escalate privileges and change contact data without requiring extra execution privileges or user interaction.

Mitigation and Prevention

To address CVE-2020-0486 and enhance device security, the following steps are recommended:

Immediate Steps to Take

Update Android devices to the latest available patches and security updates
Monitor for any suspicious activity or unauthorized changes in contact data

Long-Term Security Practices

Implement strict permission policies for applications accessing contact information
Periodically review and update security configurations to prevent privilege escalation vulnerabilities

Patching and Updates

Regularly applying system updates is crucial to mitigate CVE-2020-0486 and other potential vulnerabilities in Android-11 devices.