CVE-2023-6244

EventON - WordPress Virtual Event Calendar Plugin <= 4.5.4 (Pro) & <= 2.2.8 (Free) - Cross-Site Request Forgery via save_virtual_event_settings

2024-01-09 00:00
Francesco Carlucci

Strategic Overview

Status
Patched in 2.2.9
Affected Plugin
EventON – Events Calendar
Affected Version
<= 2.2.8
CVSS
6.5Medium
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2023-6244
View all EventON – Events Calendar vulnerabilities

At a glance

CVE-2023-6244 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the EventON WordPress plugin, affecting versions <= 2.2.8. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high integrity impact). Exploitation requires no authentication. The issue is fixed in version 2.2.9; sites on affected versions should update now. Disclosed January 2024, reported by Francesco Carlucci.

Vulnerability Overview

The EventON - WordPress Virtual Event Calendar Plugin plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 4.5.4 (Pro) & 2.2.8 (Free). This is due to missing or incorrect nonce validation on the save_virtual_event_settings function. This makes it possible for unauthenticated attackers to modify virtual event settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site. A successful exploit has high impact on integrity.

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

Reaching this weakness in EventON <= 2.2.8 takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.

An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For EventON the fix is 2.2.9: builds <= 2.2.8 are affected, anything from 2.2.9 onward is not.

Remediation

Update to version 2.2.9, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to EventON: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: EventON 2.2.9 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-6244https://www.wordfence.com/threat-intel/vulnerabilities/id/6fcc3a82-f116-446e-9e5f-4f074e20403bhttps://nvd.nist.gov/vuln/detail/CVE-2023-6244

Related records

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