CVE-2024-31237

s2Member <= 240315 - Limited Privilege Escalation

2024-04-05 00:00

Strategic Overview

Status: Patched in 240325
Affected Plugin: s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions
Affected Version: <= 240315
CVSS: 9.1Critical
Weakness type: CWE-266 · Incorrect Privilege Assignment
CVE: CVE-2024-31237

View all s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions vulnerabilities

At a glance

CVE-2024-31237 is a critical-severity Incorrect Privilege Assignment vulnerability in the s2Member WordPress plugin, affecting versions <= 240315. It carries a CVSS score of 9.1 (reachable over the network; low attack complexity; high confidentiality, integrity impact). Exploitation requires no authentication. The issue is fixed in version 240325; sites on affected versions should update now. Disclosed April 2024, reported by Ngô Thiên An (ancorn_).

Vulnerability Overview

The s2Member plugin for WordPress is vulnerable to limited privilege escalation in versions up to, and including, 240315. This is due to insufficient controls during user registration. This makes it possible for unauthenticated attackers to register with higher than the default permissions.

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 privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity.

CWE-266: Incorrect Privilege Assignment

A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.

Remediation

Update to version 240325, 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: s2Member 240325 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-31237 https://www.wordfence.com/threat-intel/vulnerabilities/id/26e7dd3f-5bdd-47d2-a013-82db72b4eae6 https://nvd.nist.gov/vuln/detail/CVE-2024-31237

Related records

Other vulnerabilities in s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions

CVSS Vector

9.1

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone

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