CVE-2022-3463

Contact Form Plugin by FluentForm <= 4.3.12 - CSV Injection

2022-10-17 00:00

Strategic Overview

Status: Patched in 4.3.13
Affected Plugin: Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder
Affected Version: <= 4.3.12
CVSS: 8.3High
Weakness type: CWE-1236 · Improper Neutralization of Formula Elements in a CSV File
CVE: CVE-2022-3463

View all Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder vulnerabilities

At a glance

CVE-2022-3463 is a high-severity Improper Neutralization of Formula Elements in a CSV File vulnerability in the Fluent Forms WordPress plugin, affecting versions <= 4.3.12. It carries a CVSS score of 8.3 (reachable over the network; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 4.3.13; sites on affected versions should update now. Disclosed October 2022, reported by Francesco Carlucci.

Vulnerability Overview

The Contact Form Plugin by FluentForm plugin for WordPress is vulnerable to CSV Injection in versions up to, and including, 4.3.12. This allows attackers to embed untrusted input into exported CSV files, which can result in code execution when these files are downloaded and opened on a local system with a vulnerable configuration.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, and no privileges on the target site. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-1236: Improper Neutralization of Formula Elements in a CSV File

The product saves user-provided information into a Comma-Separated Value (CSV) file, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as a command when the file is opened by a spreadsheet product.

Remediation

Update to version 4.3.13, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Fluent Forms: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Fluent Forms 4.3.13 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-3463 https://www.wordfence.com/threat-intel/vulnerabilities/id/9e6a1af3-d53c-4e23-95d2-3b799bc10827 https://nvd.nist.gov/vuln/detail/CVE-2022-3463

Related records

Other vulnerabilities in Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder

CVSS Vector

8.3

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

Base

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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