CVE-2023-6991 Explained : Impact and Mitigation

This CVE record pertains to a vulnerability in the JSM file_get_contents() Shortcode WordPress plugin before version 2.7.1, allowing users with contributor role and above to execute Server-Side Request Forgery (SSRF) attacks.

Understanding CVE-2023-6991

This section will delve into what CVE-2023-6991 entails, discussing its impact, technical details, and mitigation strategies.

What is CVE-2023-6991?

CVE-2023-6991 involves a security flaw in the JSM file_get_contents() Shortcode WordPress plugin versions prior to 2.7.1. It lacks validation for one of its shortcode parameters, opening the door for SSRF attacks by authorized users.

The Impact of CVE-2023-6991

The vulnerability allows individuals with contributor-level access or higher to manipulate the plugin's shortcode parameters, potentially leading to unauthorized SSRF attacks. This could enable attackers to make unauthorized requests to internal systems and services.

Technical Details of CVE-2023-6991

To better understand CVE-2023-6991, let's explore the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The JSM file_get_contents() Shortcode WordPress plugin fails to properly validate one of its shortcode parameters. This oversight facilitates SSRF attacks, putting sensitive data and resources at risk.

Affected Systems and Versions

The vulnerability impacts versions of the JSM file_get_contents() Shortcode plugin prior to 2.7.1. Users utilizing affected versions are at risk of exploitation by contributors and higher user roles.

Exploitation Mechanism

By manipulating the plugin's shortcode parameters, authorized users can craft malicious requests to internal resources, potentially extracting sensitive data or compromising system integrity.

Mitigation and Prevention

In response to CVE-2023-6991, it is crucial to implement immediate steps to mitigate risks, establish long-term security practices, and ensure prompt patching and updates.

Immediate Steps to Take

Site administrators are advised to update the JSM file_get_contents() Shortcode plugin to version 2.7.1 or later to address the vulnerability. Additionally, limiting contributor and above roles can help minimize the risk of SSRF attacks.

Long-Term Security Practices

To enhance overall security posture, organizations should conduct regular security audits, educate users on best practices, and monitor plugin vulnerabilities diligently. Implementing proper input validation and access controls is essential in preventing SSRF incidents.

Patching and Updates

Staying vigilant with plugin updates is key to addressing known vulnerabilities promptly. Regularly checking for security patches and applying them in a timely manner can significantly reduce the attack surface and protect against emerging threats.