PT-2023-12508 · WordPress · Rucy

Jerome Bruandet · Published 2023-07-01 · Updated 2023-07-07 · CVE-2021-4396

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Rucy plugin for WordPress versions up to, and including, 0.4.4

Description The issue is related to Cross-Site Request Forgery due to missing or incorrect nonce validation on the save rc post meta() function. This allows unauthenticated attackers to save post meta via a forged request if they can trick a site administrator into performing an action, such as clicking on a link.

Recommendations For Rucy plugin for WordPress versions up to, and including, 0.4.4, update to a version higher than 0.4.4 to resolve the issue. As a temporary workaround, consider disabling the save rc post meta() function until a patch is available.

Fix

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

CVE-2021-4396

Affected Products

Rucy

References · 12

• https://plugins.trac.wordpress.org/browser/rucy/trunk/inc/class-rucy-editor.php#L237 · Patch
• https://osv.dev/vulnerability/CVE-2021-4396 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-4396 · Security Note
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1 · Note
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2 · Note
• https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks · Note
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3 · Note
• https://t.me/cvenotify/53531 · Telegram Post
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/595d0401-55b9-418e-8b99-48b23e9a2662?source=cve · Note
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5 · Note
• https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks · Note