PT-2023-12519 · WordPress · Custom Banners

Jerome Bruandet · Published 2023-07-12 · Updated 2023-07-19 · CVE-2021-4407

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 Custom Banners plugin for WordPress versions up to and including 3.2.2

Description The issue is related to Cross-Site Request Forgery due to missing or incorrect nonce validation on the saveCustomFields() function. This allows unauthenticated attackers to save custom fields via a forged request if they can trick a site administrator into performing a specific action.

Recommendations For Custom Banners plugin for WordPress versions up to and including 3.2.2, consider disabling the saveCustomFields() function until a patch is available to prevent exploitation.

Fix

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

CVE-2021-4407

Affected Products

Custom Banners

References · 11

• https://nvd.nist.gov/vuln/detail/CVE-2021-4407 · Security Note
• https://osv.dev/vulnerability/CVE-2021-4407 · Vendor Advisory
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2473385%40custom-banners&new=2473385%40custom-banners&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://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/8f4c086d-8209-4212-9d91-67238c1a9143?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