CVE-2020-27051 Explained : Impact and Mitigation

Android-11 is affected by a vulnerability that could allow local escalation of privilege due to an out of bounds write. User interaction is required for exploitation.

Understanding CVE-2020-27051

In NFA_RwI93WriteMultipleBlocks of nfa_rw_api.cc, an integer overflow may lead to an out of bounds write, potentially enabling local privilege escalation without additional execution privileges.

What is CVE-2020-27051?

The vulnerability in Android-11 could be exploited locally to escalate privileges without requiring additional execution permissions.

The Impact of CVE-2020-27051

The vulnerability poses a risk of local escalation of privilege on devices running Android-11, with the potential for exploitation through user interaction.

Technical Details of CVE-2020-27051

The technical aspects of the CVE-2020-27051 vulnerability are as follows:

Vulnerability Description

The issue arises in NFA_RwI93WriteMultipleBlocks of nfa_rw_api.cc, where an integer overflow can trigger an out of bounds write, creating a pathway for local privilege escalation.

Affected Systems and Versions

Product: Android
Versions Affected: Android-11

Exploitation Mechanism

The vulnerability requires user interaction to exploit, leveraging the integer overflow in NFA_RwI93WriteMultipleBlocks to achieve local privilege escalation.

Mitigation and Prevention

To address CVE-2020-27051, consider the following steps:

Immediate Steps to Take

Apply security patches promptly to mitigate the risk of exploitation.
Monitor official Android security bulletins for updates and advisories.

Long-Term Security Practices

Implement robust security measures to prevent unauthorized access to sensitive system areas.
Educate users on safe practices to minimize the likelihood of successful privilege escalation attacks.

Patching and Updates

Regularly update Android devices to the latest firmware versions containing security patches to address known vulnerabilities.