CVE-2020-35932 : Vulnerability Insights and Analysis

Insecure Deserialization in the Newsletter plugin before 6.8.2 for WordPress allows authenticated remote attackers with minimal privileges to inject arbitrary PHP objects.

Understanding CVE-2020-35932

This CVE involves a vulnerability in the Newsletter plugin for WordPress that enables attackers to manipulate PHP objects.

What is CVE-2020-35932?

Insecure Deserialization in the Newsletter plugin allows attackers with limited privileges to inject malicious PHP objects using a specific AJAX action.

The Impact of CVE-2020-35932

CVSS Base Score: 7.5 (High)
Attack Vector: Network
Confidentiality, Integrity, and Availability Impact: High
Privileges Required: Low
Scope: Unchanged
User Interaction: None

Technical Details of CVE-2020-35932

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows authenticated attackers to inject arbitrary PHP objects through a specific parameter in the Newsletter plugin.

Affected Systems and Versions

Affected Versions: Newsletter plugin before 6.8.2

Exploitation Mechanism

Attackers can exploit this vulnerability by utilizing the tpnc_render AJAX action to inject malicious PHP objects.

Mitigation and Prevention

Protecting systems from CVE-2020-35932 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the Newsletter plugin to version 6.8.2 or newer.
Monitor for any unauthorized access or unusual activities.

Long-Term Security Practices

Regularly update all plugins and themes to the latest versions.
Implement least privilege access controls to limit the impact of potential vulnerabilities.
Conduct security audits to identify and address any security gaps.

Patching and Updates

Ensure timely patching of software and plugins to mitigate the risk of exploitation.