CVE-2023-6733

WP-Members Membership Plugin <= 3.4.8 - Missing Authorization to Sensitive Information Exposure

2024-01-03 00:00
Francesco Carlucci

Strategic Overview

Status
Patched in 3.4.9
Affected Plugin
WP-Members Membership Plugin
Affected Version
<= 3.4.8
CVSS
6.5Medium
Weakness type
CWE-284 · Improper Access Control
CVE
CVE-2023-6733
View all WP-Members Membership Plugin vulnerabilities

At a glance

CVE-2023-6733 is a medium-severity Improper Access Control vulnerability in the WP-Members Membership Plugin WordPress plugin, affecting versions <= 3.4.8. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high confidentiality impact). The root cause is a missing authorization check on a reachable function. The issue is fixed in version 3.4.9; sites on affected versions should update now. Disclosed January 2024, reported by Francesco Carlucci.

Vulnerability Overview

The WP-Members Membership Plugin plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.4.8 via the wpmem_field shortcode. This makes it possible for authenticated attackers, with contributor access and above, to extract sensitive data including user emails, password hashes, usernames, and more.

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-284: Improper Access Control

Reaching this weakness in WP-Members Membership Plugin <= 3.4.8 takes a caller who can reach the endpoint. Improper access control means the code decides what a caller may do using something other than their actual permissions, so the decision can be wrong without any check appearing to be missing.

Whoever can shape the request decides the answer, so the protected action runs for callers the code never meant to allow. For WP-Members Membership Plugin the fix is 3.4.9: builds <= 3.4.8 are affected, anything from 3.4.9 onward is not.

Remediation

Update to version 3.4.9, 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: WP-Members Membership Plugin 3.4.9 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-6733https://www.wordfence.com/threat-intel/vulnerabilities/id/46c61f38-553e-43b2-a666-b160db40e66dhttps://nvd.nist.gov/vuln/detail/CVE-2023-6733

Related records

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