WooCommerce Affiliate Plugin – Coupon Affiliates < 4.11.3.4 - Cross-Site Request Forgery

2021-10-11 00:00
WPScanTeam

Strategic Overview

Status
Patched in 4.11.3.4
Affected Plugin
Coupon Affiliates – Affiliate Plugin for WooCommerce
Affected Version
< 4.11.3.4
CVSS
8.8High
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE pending
View all Coupon Affiliates – Affiliate Plugin for WooCommerce vulnerabilities

At a glance

This record tracks a high-severity Cross-Site Request Forgery (CSRF) vulnerability in the Coupon Affiliates WordPress plugin, affecting versions < 4.11.3.4. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 4.11.3.4; sites on affected versions should update now. Disclosed October 2021, reported by WPScanTeam.

Vulnerability Overview

The WooCommerce Affiliate Plugin – Coupon Affiliates plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions before 4.11.3.4. This is due to missing or incorrect nonce validation on the delete_click_entry function. This makes it possible for unauthenticated attackers to arbitrarily delete referral visits 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 confidentiality, integrity, availability — full site compromise territory.

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

Reaching this weakness in Coupon Affiliates < 4.11.3.4 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 Coupon Affiliates the fix is 4.11.3.4: builds < 4.11.3.4 are affected, anything from 4.11.3.4 onward is not.

Remediation

Update to version 4.11.3.4, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Coupon Affiliates: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Coupon Affiliates 4.11.3.4 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.wordfence.com/threat-intel/vulnerabilities/id/2657aa8a-b2de-4cb4-b9f8-e7fb0c887a7a

Related records

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