CVE-2021-20867 : Vulnerability Insights and Analysis

A missing authorization vulnerability in Advanced Custom Fields versions prior to 5.11 and Advanced Custom Fields Pro versions prior to 5.11 could allow unauthorized movement of field groups through unspecified vectors.

Understanding CVE-2021-20867

This CVE identifies a security flaw in Advanced Custom Fields and Advanced Custom Fields Pro versions prior to 5.11 that may enable an attacker to manipulate field groups without proper authorization.

What is CVE-2021-20867?

CVE-2021-20867 highlights a missing authorization vulnerability in the affected versions of Advanced Custom Fields and Advanced Custom Fields Pro, potentially leading to unauthorized movement of field groups.

The Impact of CVE-2021-20867

The vulnerability could be exploited by attackers to move unauthorized field groups, posing a risk to the integrity and security of the systems using the affected versions.

Technical Details of CVE-2021-20867

The following technical details outline the specifics of CVE-2021-20867.

Vulnerability Description

The vulnerability involves a missing authorization check that allows a user to move unauthorized field groups, possibly leading to unauthorized manipulation of data.

Affected Systems and Versions

Advanced Custom Fields versions prior to 5.11 and Advanced Custom Fields Pro versions prior to 5.11 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by leveraging unspecified vectors to move field groups without proper authorization.

Mitigation and Prevention

To address CVE-2021-20867, consider the following mitigation strategies and security best practices.

Immediate Steps to Take

Update Advanced Custom Fields and Advanced Custom Fields Pro to version 5.11 or newer.
Monitor system activity for any unauthorized field group movements.

Long-Term Security Practices

Regularly review and update access controls to prevent unauthorized actions.
Conduct security assessments to identify and address vulnerabilities in plugins and software.

Patching and Updates

Stay informed about security updates released by Delicious Brains and apply patches promptly to secure your systems.