CVE-2023-39920

Redirection for Contact Form 7 <= 2.9.2 - Missing Authorization

2023-10-03 00:00

Strategic Overview

Status: Patched in 3.0.0
Affected Plugin: Redirection for Contact Form 7
Affected Version: <= 2.9.2
CVSS: 5.3Medium
Weakness type: CWE-862 · Missing Authorization
CVE: CVE-2023-39920

View all Redirection for Contact Form 7 vulnerabilities

At a glance

CVE-2023-39920 is a medium-severity Missing Authorization vulnerability in the Redirection for Contact Form 7 WordPress plugin, affecting versions <= 2.9.2. 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 3.0.0; sites on affected versions should update now. Disclosed October 2023, reported by Nguyen Anh Tien.

Vulnerability Overview

The Redirection for Contact Form 7 plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the export_current_filtered_view() function hooked via admin_init in versions up to, and including, 2.9.2. This makes it possible for unauthenticated attackers to export lead data.

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-862: Missing Authorization

Redirection for Contact Form 7 <= 2.9.2 carries this weakness at export_current_filtered_view(), 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 Redirection for Contact Form 7 the fix is 3.0.0: builds <= 2.9.2 are affected, anything from 3.0.0 onward is not.

Remediation

Update to version 3.0.0, 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: Redirection for Contact Form 7 3.0.0 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-39920 https://www.wordfence.com/threat-intel/vulnerabilities/id/9cf17c08-25b7-450d-acd9-963a1f79e495 https://nvd.nist.gov/vuln/detail/CVE-2023-39920

Related records

Same weakness class

Other vulnerabilities in Redirection for Contact Form 7

CVSS Vector

5.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityNone

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