CVE-2019-17671 Scanner

WordPress is a widely used open-source content management system that powers millions of websites globally. Developed primarily for building blogs and websites, it is embraced by individuals, small businesses, and large enterprises. Offering a wide range of plugins and themes, WordPress allows extensive customization to meet various user needs. Its user-friendly interface and strong community support make it accessible to non-technical users, facilitating easy website creation and management. WordPress is also known for its frequent updates, which aim to enhance functionality and security. However, its popularity also makes it a common target for security vulnerabilities and attacks.

The CVE-2019-17671 vulnerability is an information disclosure flaw found in WordPress versions prior to 5.2.4. This vulnerability allows unauthenticated users to view private or draft posts on a website. It arises due to the mishandling of the static query property, which inadvertently exposes restricted content. As a result, sensitive information could be disclosed without proper authorization, posing a risk to the confidentiality of website data. Exploiting this vulnerability requires no special privileges or user interaction, making it accessible to anyone with internet access.

Technical details about this vulnerability include the exploitation of a static query mishandling in WordPress. The flaw affects the core function responsible for managing post visibility and access control. Specifically, the vulnerability allows unauthorized access to view post titles and content marked as private or draft. The affected endpoints could include URLs or web forms where the static query parameter is used. Successful exploitation is confirmed by examining HTTP responses, particularly looking for specific status codes and patterns in the response body that indicate draft or private post visibility.

When exploited, malicious actors can view restricted content, which may include sensitive or confidential information intended only for authorized users or administrators. This can lead to various security issues, including privacy violations and reputational damage to affected websites. Additionally, exposed data might be used for further attacks, such as social engineering or targeted phishing. Organizations relying on WordPress for confidential communication or sensitive data exchange should be particularly vigilant to avoid data leaks.

REFERENCES

• https://blog.wpscan.com/wordpress/security/release/2019/10/15/wordpress-523-security-and-maintenance-release.html
• https://core.trac.wordpress.org/changeset/46474
• https://nvd.nist.gov/vuln/detail/CVE-2019-17671
• https://seclists.org/bugtraq/2020/Jan/8