OptinMonster <= 2.12.1 - Authenticated (Subscriber+) Sensitive Information Disclosure via Shortcode
Strategic Overview
- Status
- Patched in 2.12.2
- Affected Plugin
- Popup Builder & Popup Maker for WordPress – OptinMonster Email Marketing and Lead Generation
- Affected Version
<= 2.12.1- CVSS
- 4.3Medium
- Weakness type
- CWE-639 · Authorization Bypass Through User-Controlled Key
- CVE
CVE-2023-0772
At a glance
CVE-2023-0772 is a medium-severity Authorization Bypass Through User-Controlled Key vulnerability in the Popup Builder & Popup Maker for WordPress WordPress plugin, affecting versions <= 2.12.1. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 2.12.2; sites on affected versions should update now. Disclosed March 2023, reported by Erwan LR.
Vulnerability Overview
The OptinMonster plugin for WordPress is vulnerable to unauthorized access of data due to insufficient post type validation on the 'prepare_campaign' function in versions up to 2.12.1. This makes it possible for authenticated attackers with subscriber-level access, and above, to access potentially sensitive information due to lack of protections and information restrictions that let campaign information or even private post and content information to be leaked.
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.
CWE-639: Authorization Bypass Through User-Controlled Key
Popup Builder & Popup Maker for WordPress <= 2.12.1 carries this weakness at prepare_campaign, and reaching it takes an account at Subscriber level or above. Authorization bypass through a user-controlled key, often called insecure direct object reference, means the application looks up a record by an identifier from the request without checking that the caller owns it.
Changing a number in the request is enough to read or modify other users' records, which on commerce and membership sites means customer data. For Popup Builder & Popup Maker for WordPress the fix is 2.12.2: builds <= 2.12.1 are affected, anything from 2.12.2 onward is not.
Remediation
Update to version 2.12.2, 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: Popup Builder & Popup Maker for WordPress 2.12.2 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Other vulnerabilities in Popup Builder & Popup Maker for WordPress – OptinMonster Email Marketing and Lead Generation
- 8.2CVE-2021-39341: OptinMonster <= 2.6.4 Unprotected REST-API Endpoints
CVE-2021-39341 - 6.4CVE-2024-4045: Popup Builder by OptinMonster Stored XSS
CVE-2024-4045 - 6.1CVE-2021-39325: OptinMonster <= 2.6.0 Reflected Cross-Site Scripting
CVE-2021-39325 - 5.3CVE-2016-10996: Popup Builder by OptinMonster <= 1.1.4.5 RCE
CVE-2016-10996 - 4.3CVE-2024-33691: Popup Builder by OptinMonster CSRF to Notice Dismissal
CVE-2024-33691
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