Get URL Cron <= 1.4.7 - Cross-Site Request Forgery via geturlcron_action_handle

2023-02-15 00:00
Rio Darmawan

Strategic Overview

Status
Patched in 1.4.8
Affected Version
<= 1.4.7
CVSS
4.3Medium
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE pending
View all Cron Setup and Monitor – Get URL Cron vulnerabilities

At a glance

This record tracks a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Cron Setup and Monitor WordPress plugin, affecting versions <= 1.4.7. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.4.8; sites on affected versions should update now. Disclosed February 2023, reported by Rio Darmawan.

Vulnerability Overview

The Get URL Cron plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.4.7. This is due to missing or incorrect nonce validation on the geturlcron_action_handle function called via an init hook. This makes it possible for unauthenticated attackers to modify many of the plugin's settings and create cron jobs, 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.

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

Reaching this weakness in Cron Setup and Monitor <= 1.4.7 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 Cron Setup and Monitor the fix is 1.4.8: builds <= 1.4.7 are affected, anything from 1.4.8 onward is not.

Remediation

Update to version 1.4.8, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Cron Setup and Monitor: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Cron Setup and Monitor 1.4.8 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

Related records

Other vulnerabilities in Cron Setup and Monitor – Get URL Cron

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C