CVE-2020-5768

Icegram Email Subscribers & Newsletters <= 4.5.0 - Authenticated SQL Injection

2020-07-16 00:00
Alex Peña

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
4.9Medium
Weakness type
CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CVE
CVE-2020-5768
View all Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress vulnerabilities

At a glance

CVE-2020-5768 is a medium-severity Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in the Email Subscribers & Newsletters WordPress plugin, affecting versions < 4.5.1. It carries a CVSS score of 4.9 (reachable over the network; low attack complexity; high confidentiality impact). Exploitation requires an authenticated account. The issue is fixed in version 4.5.1; sites on affected versions should update now. Disclosed July 2020, reported by Alex Peña.

Vulnerability Overview

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') in Icegram Email Subscribers & Newsletters Plugin for WordPress v4.4.8 allows a remote, authenticated attacker to determine the value of database fields.

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.

CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Reaching this weakness in Email Subscribers & Newsletters < 4.5.1 takes any authenticated account. SQL injection happens when request data is concatenated into a query instead of being bound as a parameter, letting an attacker change the structure of the statement rather than just its values.

A working injection can read any table the database user can see, which on a WordPress install means user records, password hashes and session or API secrets stored in options. 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-2020-5768https://www.wordfence.com/threat-intel/vulnerabilities/id/61b28b8c-4588-4b4e-85e8-d3d37b791f3dhttps://nvd.nist.gov/vuln/detail/CVE-2020-5768

Related records

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