CVE-2020-5767

Icegram Email Subscribers & Newsletters Plugin for WordPress <= 4.5.0 - Cross-Site Request Forgery

2020-07-13 00:00
Tenable

Strategic Overview

Status
Patched in 4.5.1
Affected Plugin
Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress
Affected Version
< 4.5.1
CVSS
8.8High
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2020-5767
View all Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress vulnerabilities

At a glance

CVE-2020-5767 is a high-severity Cross-Site Request Forgery (CSRF) vulnerability in the Email Subscribers & Newsletters WordPress plugin, affecting versions < 4.5.1. 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 4.5.1; sites on affected versions should update now. Disclosed July 2020, reported by Tenable.

Vulnerability Overview

Cross-site request forgery in Icegram Email Subscribers & Newsletters Plugin for WordPress v4.5.0 allows a remote attacker to send forged emails by tricking legitimate users into clicking a crafted 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 Email Subscribers & Newsletters < 4.5.1 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 Email Subscribers & Newsletters the fix is 4.5.1: builds < 4.5.1 are affected, anything from 4.5.1 onward is not.

Remediation

Update to version 4.5.1, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Email Subscribers & Newsletters: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Email Subscribers & Newsletters 4.5.1 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2020-5767https://www.wordfence.com/threat-intel/vulnerabilities/id/fd154b26-985b-4e72-976f-1858a783c667https://nvd.nist.gov/vuln/detail/CVE-2020-5767

Related records

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