Bit Form <= 1.8.1 - Unauthenticated Arbitrary File Upload to Remote Code Execution

2023-04-19 00:00

Felipe Restrepo Rodriguez (pfelilpe)

Strategic Overview

Status

Patched in 1.9

Affected PluginBit Form – Contact Form, Payment Forms, Multi Step Forms, Calculator & Custom Form Builder

Affected Version<= 1.8.1

CVSS9.8Critical

CVECVE-2022-4774

View all Bit Form – Contact Form, Payment Forms, Multi Step Forms, Calculator & Custom Form Builder vulnerabilities

Vulnerability Overview

The Bit Form plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the saveFormEntry function in versions up to, and including, 1.8.1. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

Technical Analysis

REMEDIATION: Update to version 1.9, or a newer patched version --- IDENTIFIER: CWE-434 (Unrestricted Upload of File with Dangerous Type) The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

External References

https://www.cve.org/CVERecord?id=CVE-2022-4774 https://www.wordfence.com/threat-intel/vulnerabilities/id/faa3f6ab-43d6-4874-b16e-93abbb4ba72e

CVSS Vector

9.8

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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