CVE-2021-24371 Explained : Impact and Mitigation

A high privilege user of the RSVPMaker WordPress plugin before version 8.7.3 could exploit an SSRF vulnerability to scan the internal network. Find out more about this authenticated SSRF vulnerability and its impact.

Understanding CVE-2021-24371

This CVE details an authenticated SSRF vulnerability in RSVPMaker WordPress plugin versions below 8.7.3.

What is CVE-2021-24371?

The Import feature of RSVPMaker plugin allowed an attacker to perform Server-Side Request Forgery (SSRF) attacks, potentially compromising the internal network.

The Impact of CVE-2021-24371

A user with high privileges could abuse the Import feature to launch SSRF attacks, enabling them to scan the internal network and access sensitive information.

Technical Details of CVE-2021-24371

This section covers specific technical information about the vulnerability.

Vulnerability Description

The vulnerability in the Import feature of RSVPMaker plugin allowed high privilege users to execute SSRF attacks by inputting URLs directly without proper validation, leading to unauthorized network scans.

Affected Systems and Versions

RSVPMaker versions prior to 8.7.3 are impacted by this vulnerability, exposing them to potential SSRF attacks.

Exploitation Mechanism

By abusing the Import feature, an authenticated attacker could input malicious URLs, triggering SSRF attacks to probe the internal network.

Mitigation and Prevention

Learn how to protect your systems against CVE-2021-24371 and prevent similar vulnerabilities in the future.

Immediate Steps to Take

It is recommended to update the RSVPMaker plugin to version 8.7.3 or later to mitigate the SSRF vulnerability.

Long-Term Security Practices

Ensure all user inputs are validated, practice the principle of least privilege, and regularly monitor and patch security vulnerabilities.

Patching and Updates

Stay informed about security updates for RSVPMaker and promptly apply patches to address any known vulnerabilities.