SB2019062902 - CSRF in Widget Logic plugin for WordPress

Description

This security bulletin contains information about 1 vulnerability.

1) Cross-site request forgery (CVE-ID: CVE-2019-12826)

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

CVSSv4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick a logged-in administrator to visit a specially crafted webpage and create administrative user account or inject malicious PHP code into custom sidebar widgets registered with "wp_register_sidebar_widgettrick".

Successful exploitation of the vulnerability may allow an attacker to gain full access to the website.

Remediation

Install update from vendor's website.

References

• https://dannewitz.ninja/posts/widget-logic-csrf-to-rce
• https://plugins.trac.wordpress.org/changeset/2112753/widget-logic