Envo Extra <= 1.8.3 - Cross-Site Request Forgery

2023-10-17 00:00
Anonymous

Strategic Overview

Status
Patched in 1.8.4
Affected Plugin
Envo Extra
Affected Version
< 1.8.4
CVSS
4.3Medium
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE pending
View all Envo Extra vulnerabilities

At a glance

This record tracks a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Envo Extra WordPress plugin, affecting versions < 1.8.4. 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 1.8.4; sites on affected versions should update now. Disclosed October 2023.

Vulnerability Overview

The Envo Extra plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.8.3. This is due to missing or incorrect nonce validation on the ajax_required_plugins_activate function. This makes it possible for unauthenticated attackers to activate plugins required by Envo Extra 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 Envo Extra < 1.8.4 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 Envo Extra the fix is 1.8.4: builds < 1.8.4 are affected, anything from 1.8.4 onward is not.

Remediation

Update to version 1.8.4, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Envo Extra: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Envo Extra 1.8.4 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.wordfence.com/threat-intel/vulnerabilities/id/f709fca2-b7b6-4567-8055-1156f510d1ca

Related records

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