CVE-2023-3213

WP Mail SMTP Pro <= 3.8.0 - Missing Authorization to Information Dislcosure via is_print_page

2023-10-03 00:00

Strategic Overview

Status: Patched in 3.8.1
Affected Plugin: WP Mail SMTP Pro
Affected Version: <= 3.8.0
CVSS: 5.3Medium
Weakness type: CWE-862 · Missing Authorization
CVE: CVE-2023-3213

View all WP Mail SMTP Pro vulnerabilities

At a glance

CVE-2023-3213 is a medium-severity Missing Authorization vulnerability in the WP Mail SMTP Pro WordPress plugin, affecting versions <= 3.8.0. 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 3.8.1; sites on affected versions should update now. Disclosed October 2023, reported by Alex Thomas.

Vulnerability Overview

The WP Mail SMTP Pro plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the is_print_page function in versions up to, and including, 3.8.0. This makes it possible for unauthenticated attackers to disclose potentially sensitive email information.

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

Reaching this weakness in WP Mail SMTP Pro <= 3.8.0 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 WP Mail SMTP Pro the fix is 3.8.1: builds <= 3.8.0 are affected, anything from 3.8.1 onward is not.

Remediation

Update to version 3.8.1, 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 Mail SMTP Pro 3.8.1 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-3213 https://www.wordfence.com/threat-intel/vulnerabilities/id/a813251b-a4c1-4b23-ad03-dcc1f4f19eb9 https://nvd.nist.gov/vuln/detail/CVE-2023-3213

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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