CVE-2020-12462

Ninja Forms Contact Form <= 3.4.24.1 - Cross-Site Request Forgery leading to Stored Cross-Site Scripting

2020-04-28 00:00

Strategic Overview

Status: Patched in 3.4.24.2
Affected Plugin: Ninja Forms – The Contact Form Builder That Grows With You
Affected Version: < 3.4.24.2
CVSS: 6.1Medium
Weakness type: CWE-352 · Cross-Site Request Forgery (CSRF)
CVE: CVE-2020-12462

View all Ninja Forms – The Contact Form Builder That Grows With You vulnerabilities

At a glance

CVE-2020-12462 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Ninja Forms WordPress plugin, affecting versions < 3.4.24.2. 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 3.4.24.2; sites on affected versions should update now. Disclosed April 2020, reported by Ram.

Vulnerability Overview

The Ninja Forms plugin before 3.4.24.2 for WordPress allows CSRF with resultant XSS.

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-352: Cross-Site Request Forgery (CSRF)

Reaching this weakness in Ninja Forms < 3.4.24.2 takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.

An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For Ninja Forms the fix is 3.4.24.2: builds < 3.4.24.2 are affected, anything from 3.4.24.2 onward is not.

Remediation

Update to version 3.4.24.2, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Ninja Forms: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Ninja Forms 3.4.24.2 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2020-12462 https://www.wordfence.com/threat-intel/vulnerabilities/id/d97df193-28ed-4961-9d71-00098c0bec45 https://nvd.nist.gov/vuln/detail/CVE-2020-12462

Related records

Same weakness class

Other vulnerabilities in Ninja Forms – The Contact Form Builder That Grows With You

CVSS Vector

6.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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