Easy Digital Downloads <= 3.1.1.4.2 - Cross-Site Request Forgery via edd_trigger_upgrades

2023-06-07 00:00
Anonymous

Strategic Overview

Status
Patched in 3.1.2
Affected Plugin
Easy Digital Downloads – eCommerce Payments and Subscriptions made easy
Affected Version
< 3.1.2
CVSS
4.3Medium
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE pending
View all Easy Digital Downloads – eCommerce Payments and Subscriptions made easy vulnerabilities

At a glance

This record tracks a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Easy Digital Downloads WordPress plugin, affecting versions < 3.1.2. 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 3.1.2; sites on affected versions should update now. Disclosed June 2023.

Vulnerability Overview

The Easy Digital Downloads plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 3.1.1.4.2. This is due to missing or incorrect nonce validation on the edd_trigger_upgrades function. This makes it possible for unauthenticated attackers to trigger plugin upgrades 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 Easy Digital Downloads < 3.1.2 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 Easy Digital Downloads the fix is 3.1.2: builds < 3.1.2 are affected, anything from 3.1.2 onward is not.

Remediation

Update to version 3.1.2, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Easy Digital Downloads: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Easy Digital Downloads 3.1.2 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.wordfence.com/threat-intel/vulnerabilities/id/e3adcb85-efc5-429c-8a06-9bfb472d668f

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