CVE-2021-42767 : Vulnerability Insights and Analysis

A directory traversal vulnerability in the apoc plugins in Neo4J Graph database before 4.4.0.1 allows attackers to read local files and sometimes create local files. This CVE was published on 2022-03-01 and affects versions 3.5.17, 4.2.10, 4.3.0.4, and 4.4.0.1.

Understanding CVE-2021-42767

This CVE describes a directory traversal vulnerability in Neo4J Graph database that impacts file read and creation capabilities.

What is CVE-2021-42767?

This CVE refers to a security flaw in Neo4J Graph database's apoc plugins, enabling malicious actors to access and manipulate local files.

The Impact of CVE-2021-42767

The vulnerability allows unauthorized users to view sensitive files and potentially create harmful files on the system.

Technical Details of CVE-2021-42767

This section covers the technical specifics of the CVE.

Vulnerability Description

The CVE involves a directory traversal vulnerability in the apoc plugins of Neo4J Graph database, permitting unauthorized file access and creation.

Affected Systems and Versions

Versions before 4.4.0.1 are vulnerable to this issue.
Specifically, versions 3.5.17, 4.2.10, 4.3.0.4, and 4.4.0.1 are impacted.

Exploitation Mechanism

Attackers exploit this vulnerability by manipulating directory traversal sequences to access and write files on the system.

Mitigation and Prevention

Protect your system against CVE-2021-42767 to enhance security.

Immediate Steps to Take

Update Neo4J Graph database to versions 3.5.17, 4.2.10, 4.3.0.4, or 4.4.0.1, which contain the necessary security patches.
Monitor file access and modifications for any suspicious activities.

Long-Term Security Practices

Implement access control mechanisms to restrict unauthorized file system access.
Regularly audit and update software and plugins to address emerging security threats.

Patching and Updates

Ensure timely installation of security patches and updates provided by Neo4J to prevent exploitation of this vulnerability.