PT-2023-12516 · WordPress · Event Espresso 4 Decaf

Jerome Bruandet · Published 2023-07-01 · Updated 2023-07-08 · CVE-2021-4404

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 Event Espresso 4 Decaf plugin for WordPress versions up to, and including, 4.10.11

Description The issue is due to missing or incorrect nonce validation on the ajaxHandler() function, making it possible for unauthenticated attackers to opt into notifications 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, 4.10.11, consider disabling the ajaxHandler() function until a patch is available to prevent exploitation. Restrict access to the affected plugin to minimize the risk of exploitation. Avoid using the plugin until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

CVE-2021-4404

Affected Products

Event Espresso 4 Decaf

References · 12

• https://plugins.trac.wordpress.org/changeset/2554360/event-espresso-decaf/trunk/core/domain/services/pue/Stats.php · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-4404 · Security Note
• https://osv.dev/vulnerability/CVE-2021-4404 · Vendor Advisory
• https://wordfence.com/threat-intel/vulnerabilities/id/89d3a9da-2496-4f75-ad8f-65629f198fe5?source=cve · 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://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4 · Note
• https://t.me/cvenotify/53521 · Telegram Post
• 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