PT-2023-12515 · WordPress · Remove Schema Plugin

Jerome Bruandet · Published 2023-07-01 · Updated 2023-07-08 · CVE-2021-4403

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 Remove Schema plugin for WordPress versions up to, and including, 1.5

Description The issue is due to missing or incorrect nonce validation on the validate() function, making it possible for unauthenticated attackers to modify the plugin's settings via a forged request. This can happen if an attacker can trick a site administrator into performing an action, such as clicking on a link.

Recommendations For versions up to, and including, 1.5, consider disabling the validate() function until a patch is available to prevent exploitation. Restrict access to the plugin's settings to minimize the risk of unauthorized modifications.

Fix

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

CVE-2021-4403

Affected Products

Remove Schema Plugin

References · 12

• https://nvd.nist.gov/vuln/detail/CVE-2021-4403 · Security Note
• https://osv.dev/vulnerability/CVE-2021-4403 · Vendor Advisory
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2548575%40remove-schema&new=2548575%40remove-schema&sfp_email=&sfph_mail= · Patch
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2 · Note
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1 · Note
• https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks · Note
• https://t.me/cvenotify/53522 · Telegram Post
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3 · Note
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/89635463-966d-4f7d-995d-ad83a502d95b?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