SB2023091432 - Server-Side Request Forgery (SSRF) in Crayon Syntax Highlighter plugin for WordPress

Description

This security bulletin contains information about 1 vulnerability.

1) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2023-4893)

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input in the "crayon" shortcode. A remote user can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• https://www.wordfence.com/threat-intel/vulnerabilities/id/527f75f1-6361-4e16-8ae4-d38ca4589811?source=cve
• https://plugins.trac.wordpress.org/browser/crayon-syntax-highlighter/trunk/crayon_highlighter.class.php#L83