CVE-2019-2011 Explained : Impact and Mitigation

Android versions 8.0, 8.1, and 9 are affected by a vulnerability in the Parcel.cpp file that could lead to local privilege escalation.

Understanding CVE-2019-2011

This CVE involves a potential vulnerability in Android versions 8.0, 8.1, and 9 that could allow an attacker to escalate privileges locally without requiring additional execution privileges.

What is CVE-2019-2011?

The function readNullableNativeHandleNoDup in the Parcel.cpp file has a vulnerability that may result in writing outside the memory buffer's bounds without proper checks. This flaw could lead to local privilege escalation without needing extra execution privileges.

The Impact of CVE-2019-2011

The vulnerability could be exploited without user interaction, potentially allowing an attacker to gain elevated privileges on the affected Android devices.

Technical Details of CVE-2019-2011

Vulnerability Description

The vulnerability lies in the readNullableNativeHandleNoDup function in Parcel.cpp, enabling an out-of-bounds write due to a missing bounds check.

Affected Systems and Versions

Product: Android
Versions: Android-8.0, Android-8.1, Android-9

Exploitation Mechanism

Attackers can exploit this vulnerability to achieve local privilege escalation without requiring additional execution privileges.

Mitigation and Prevention

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Monitor vendor security bulletins for updates and advisories.

Long-Term Security Practices

Regularly update and patch all software and firmware on devices.
Implement least privilege access controls to limit the impact of potential vulnerabilities.
Conduct regular security assessments and penetration testing.

Patching and Updates

Ensure all affected Android devices are updated with the latest security patches to mitigate the risk of exploitation.