CVE-2020-0246 Explained : Impact and Mitigation

Android's getCarrierPrivilegeStatus function in UiccAccessRule.java lacks a permission check, potentially leading to local EID data disclosure. No extra execution privileges are required for exploitation.

Understanding CVE-2020-0246

What is CVE-2020-0246?

CVE-2020-0246 is an information disclosure vulnerability found in Android's getCarrierPrivilegeStatus function.

The Impact of CVE-2020-0246

The vulnerability could result in local information disclosure of EID data with no need for additional execution privileges, posing a risk of exposing sensitive information.

Technical Details of CVE-2020-0246

Vulnerability Description

The missing permission check in getCarrierPrivilegeStatus of UiccAccessRule.java allows unauthorized access to EID data.

Affected Systems and Versions

Product: Android
Versions: Android-10, Android-11

Exploitation Mechanism

No user interaction is required for exploitation.

Mitigation and Prevention

Immediate Steps to Take

Apply patches provided by the vendor promptly to mitigate the vulnerability.
Regularly monitor security bulletins and updates from the Android platform.

Long-Term Security Practices

Implement strict permission controls and access restrictions within the codebase.
Conduct regular security audits and code reviews to identify and address potential vulnerabilities.

Patching and Updates

Stay informed about security advisories and updates released by Android to address the CVE-2020-0246 vulnerability.