CVE-2023-5089

Defender Security <= 4.0.2 - Hide Login Page Feature Protection Bypass

2023-09-06 00:00

Strategic Overview

Status: Patched in 4.1.0
Affected Plugin: Defender Security – Malware Scanner, Login Security & Firewall
Affected Version: <= 4.0.2
CVSS: 5.3Medium
Weakness type: CWE-693 · Protection Mechanism Failure
CVE: CVE-2023-5089

View all Defender Security – Malware Scanner, Login Security & Firewall vulnerabilities

At a glance

CVE-2023-5089 is a medium-severity Protection Mechanism Failure vulnerability in the Defender Security WordPress plugin, affecting versions <= 4.0.2. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 4.1.0; sites on affected versions should update now. Disclosed September 2023, reported by Juan Pablo Gomez Postigo.

Vulnerability Overview

The Defender Security plugin for WordPress is vulnerable to protection bypass in versions up to, and including, 4.0.2. This is due to the plugin failing to prevent redirects via the auth_redirect WordPress function. This makes it possible for unauthenticated attackers to bypass the 'Hide Login Page' security feature.

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.

CWE-693: Protection Mechanism Failure

The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

Remediation

Update to version 4.1.0, or a newer patched version

How does WordSec protect against this?

The fix is the thing that ends this: Defender Security 4.1.0 closes this, and updating the plugin is the step that ends it.

Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-5089 https://www.wordfence.com/threat-intel/vulnerabilities/id/08dee232-7373-4da4-9c2c-c3aa52f9b588 https://nvd.nist.gov/vuln/detail/CVE-2023-5089

Related records

Same weakness class

Other vulnerabilities in Defender Security – Malware Scanner, Login Security & Firewall

CVSS Vector

5.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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