what3words Address Field <= 4.0.0 - Authenticated (Administrator+) Sensitive Information Exposure in class-w3w-autosuggest-public.php
Strategic Overview
- Status
- Patched in 4.0.1
- Affected Plugin
- what3words Address Field
- Affected Version
<= 4.0.0- CVSS
- 5.3Medium
- Weakness type
- CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
- CVE
CVE-2021-4428
At a glance
CVE-2021-4428 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the what3words Address Field WordPress plugin, affecting versions <= 4.0.0. 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 4.0.1; sites on affected versions should update now. Disclosed July 2023.
Vulnerability Overview
The what3words Address Field plugin for WordPress is vulnerable to Sensitive Information Exposure in versions up to, and including, 4.0.0 in class-w3w-autosuggest-public.php. This can allow authenticated attackers, with administrator-level privileges and above, to extract sensitive 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-200: Exposure of Sensitive Information to an Unauthorized Actor
Reaching this weakness in what3words Address Field <= 4.0.0 takes an account at Administrator level or above. Sensitive information exposure means data the application intended to keep internal is returned to a caller who should not be able to see it.
The disclosed data — credentials, tokens, customer records or internal paths — is usually worth more as material for a follow-up attack than as an end in itself. For what3words Address Field the fix is 4.0.1: builds <= 4.0.0 are affected, anything from 4.0.1 onward is not.
Remediation
Update to version 4.0.1, or a newer patched version
How does WordSec protect against this?
The fix is the thing that ends this: what3words Address Field 4.0.1 closes this, and updating the plugin is the step that ends it.
- Alerts
External References
Related records
Other vulnerabilities in what3words Address Field
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