PDF Generator for Wordpress <= 1.1.1 - Reflected Cross-Site Scripting
Strategic Overview
- Status
- Patched in 1.1.2
- Affected Plugin
- PDF Generator for WordPress
- Affected Version
<= 1.1.1- CVSS
- 6.1Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2022-4321
At a glance
CVE-2022-4321 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the PDF Generator for WordPress WordPress plugin, affecting versions <= 1.1.1. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.1.2; sites on affected versions should update now. Disclosed January 2023, reported by cydave.
Vulnerability Overview
The PDF Generator for Wordpress plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via vendored example files that employ various parameters (such as ‘city’) in versions up to, and including, 1.1.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
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.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
PDF Generator for WordPress <= 1.1.1 carries this weakness at city, and reaching it takes a caller who can reach the endpoint. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.
Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For PDF Generator for WordPress the fix is 1.1.2: builds <= 1.1.1 are affected, anything from 1.1.2 onward is not.
Remediation
Update to version 1.1.2, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to PDF Generator for WordPress: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: PDF Generator for WordPress 1.1.2 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Other vulnerabilities in PDF Generator for WordPress
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