CVE-2024-1596

Ninja Forms File Uploads <= 3.3.16 - Unauthenticated Stored Cross-Site Scripting via File Upload

2024-09-06 00:00
wesley (wcraft)

Strategic Overview

Status
Patched in 3.3.18
Affected Plugin
Ninja Forms - File Uploads
Affected Version
<= 3.3.16
CVSS
7.2High
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2024-1596
View all Ninja Forms - File Uploads vulnerabilities

At a glance

CVE-2024-1596 is a high-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Ninja Forms - File Uploads WordPress plugin, affecting versions <= 3.3.16. It carries a CVSS score of 7.2 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 3.3.18; sites on affected versions should update now. Disclosed September 2024, reported by wesley (wcraft).

Vulnerability Overview

The Ninja Forms - File Uploads plugin for WordPress is vulnerable to Stored Cross-Site Scripting via an uploaded file (e.g. RTX file) in all versions up to, and including, 3.3.16 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Reaching this weakness in Ninja Forms - File Uploads <= 3.3.16 takes no account at all. 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 Ninja Forms - File Uploads the fix is 3.3.18: builds <= 3.3.16 are affected, anything from 3.3.18 onward is not.

Remediation

Update to version 3.3.18, or a newer patched version

How does WordSec protect against this?

Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Ninja Forms - File Uploads 3.3.18 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-1596https://www.wordfence.com/threat-intel/vulnerabilities/id/499a1892-12b7-49d5-b65f-4f53a968a23ahttps://nvd.nist.gov/vuln/detail/CVE-2024-1596

Related records

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