WordPress Plugin Form Maker 1.12.20 - CSV Injection

2018-04-3000:00:00

Sairam Jetty

www.exploit-db.com

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

0.001 Low

EPSS

Percentile

46.6%

JSON

# Exploit Title: Wordpress Plugin Form Maker version 1.12.20 vulnerable to to Formula Injection (CSV Injection)
# Google Dork: N/A
# Date: 27-04-2018
################################
# Exploit Author: Jetty Sairam
################################
# Software Link: https://wordpress.org/plugins/form-maker/
# Affected Version: 1.12.20 and before
#Category: Plugins and Extensions
# Tested on: WiN7_x64
# CVE : CVE-2018-10504

1. Application Description:
Form Maker provides a framework to build custom forms for Joomla users.
2. Technical Description:
Custom Forms version 1.12.20 is affected by the vulnerability Remote Command Execution using CSV Injection. This allows a public user to inject commands as a part of form fields and when a user with higher privilege exports the form data in CSV opens the file on their machine, the command is executed.
3. Proof Of Concept:
Enter the payload @SUM(1+1)*cmd|' /C calc'!A0 in the form fields and submit.
When high privileged user logs into the application to export form data in CSV and opens the file.
Formula gets executed and calculator will get popped in his machine.
4. Solution:
Upgrade to version 1.12.24
https://wordpress.org/plugins/form-maker/
5. Reference:
https://wordpress.org/plugins/form-maker/#developers