CVE-2024-4010

Email Subscribers by Icegram Express <= 5.7.19 - Missing Authorization in handle_ajax_request

2024-05-14 00:00
Arkadiusz Hydzik

Strategic Overview

Status
Patched in 5.7.20
Affected Plugin
Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress
Affected Version
<= 5.7.19
CVSS
8.8High
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2024-4010
View all Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress vulnerabilities

At a glance

CVE-2024-4010 is a high-severity Missing Authorization vulnerability in the Email Subscribers & Newsletters WordPress plugin, affecting versions <= 5.7.19. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). The root cause is a missing authorization check on a reachable function. The issue is fixed in version 5.7.20; sites on affected versions should update now. Disclosed May 2024, reported by Arkadiusz Hydzik.

Vulnerability Overview

The Email Subscribers by Icegram Express plugin for WordPress is vulnerable to unauthorized access of data, modification of data, and loss of data due to a missing capability check on the handle_ajax_request function in all versions up to, and including, 5.7.19. This makes it possible for authenticated attackers, with subscriber-level access and above, to cause a loss of confidentiality, integrity, and availability, by performing multiple unauthorized actions. Some of these actions could also be leveraged to conduct PHP Object Injection and SQL Injection attacks.

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 interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-862: Missing Authorization

Reaching this weakness in Email Subscribers & Newsletters <= 5.7.19 takes a caller who can reach the endpoint. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Email Subscribers & Newsletters the fix is 5.7.20: builds <= 5.7.19 are affected, anything from 5.7.20 onward is not.

Remediation

Update to version 5.7.20, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Email Subscribers & Newsletters 5.7.20 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-4010https://www.wordfence.com/threat-intel/vulnerabilities/id/23bfcdd1-b99d-47eb-9f88-96f9ecc53b32https://nvd.nist.gov/vuln/detail/CVE-2024-4010

Related records

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