WordPress security changelog
HIGH CVE-2023-4153 Modified

BAN Users: Privilege escalation or authentication bypass

BAN Users is affected by privilege escalation or authentication bypass. Exploitation requires an authenticated WordPress account. A successful request can grant permissions or access that the caller should not possess.

CVE / CNA score 8.8 CVSS 3.1 · security@wordfence.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
BAN Users
Plugin slug
ban-users
Affected
See vendor advisory
Safe version
See mitigation notes
Published
Sep 13, 2023
Weakness
CWE-266 — Incorrect Privilege Assignment

This CVE was published Sep 13, 2023 and is one of 1 known issue for this plugin.

What to do

Update, patch or deactivate.

Update BAN Users to a release outside the affected range, or disable and remove it until a fixed version is available.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

The BAN Users plugin for WordPress is vulnerable to privilege escalation in versions up to, and including, 1.5.3 due to a missing capability check on the 'w3dev_save_ban_user_settings_callback' function. This makes it possible for authenticated attackers, with minimal permissions such as a subscriber, to modify the plugin settings to access the ban and unban functionality and set the role of the unbanned user.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Primary and upstream sources