CVE-2023-6742

Envira Gallery Lite <= 1.8.7.2 - Missing Authorization to Gallery Modification via envira_gallery_insert_images

2024-01-08 00:00
Nex Team

Strategic Overview

Status
Patched in 1.8.7.3
Affected Plugin
Envira Gallery – Image Photo Gallery, Albums, Video Gallery, Slideshows & More
Affected Version
<= 1.8.7.2
CVSS
4.3Medium
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2023-6742
View all Envira Gallery – Image Photo Gallery, Albums, Video Gallery, Slideshows & More vulnerabilities

At a glance

CVE-2023-6742 is a medium-severity Missing Authorization vulnerability in the Envira Gallery WordPress plugin, affecting versions <= 1.8.7.2. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). The root cause is a missing authorization check on a reachable function. The issue is fixed in version 1.8.7.3; sites on affected versions should update now. Disclosed January 2024, reported by Nex Team.

Vulnerability Overview

The Gallery Plugin for WordPress – Envira Photo Gallery plugin for WordPress is vulnerable to unauthorized modification of data due to an improper capability check on the 'envira_gallery_insert_images' function in all versions up to, and including, 1.8.7.1. This makes it possible for authenticated attackers, with contributor access and above, to modify galleries on other users' posts.

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.

CWE-862: Missing Authorization

Envira Gallery <= 1.8.7.2 carries this weakness at envira_gallery_insert_images, and reaching it 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 Envira Gallery the fix is 1.8.7.3: builds <= 1.8.7.2 are affected, anything from 1.8.7.3 onward is not.

Remediation

Update to version 1.8.7.3, 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: Envira Gallery 1.8.7.3 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-6742https://www.wordfence.com/threat-intel/vulnerabilities/id/40655278-6915-4a76-ac2d-bb161d3cee92https://nvd.nist.gov/vuln/detail/CVE-2023-6742

Related records

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