Kodi 17.6 Cross Site Scripting

`=============================================  
MGC ALERT 2018-003  
- Original release date: March 19, 2018  
- Last revised: April 16, 2018  
- Discovered by: Manuel Garcia Cardenas  
- Severity: 4,8/10 (CVSS Base Score)  
- CVE-ID: CVE-2018-8831  
=============================================  
  
I. VULNERABILITY  
-------------------------  
Kodi <= 17.6 - Persistent Cross-Site Scripting  
  
II. BACKGROUND  
-------------------------  
Kodi (formerly XBMC) is a free and open-source media player software  
application developed by the XBMC Foundation, a non-profit technology  
consortium. Kodi is available for multiple operating systems and hardware  
platforms, with a software 10-foot user interface for use with televisions  
and remote controls.  
  
III. DESCRIPTION  
-------------------------  
Has been detected a Persistent XSS vulnerability in the web interface of  
Kodi, that allows the execution of arbitrary HTML/script code to be  
executed in the context of the victim user's browser.  
  
IV. PROOF OF CONCEPT  
-------------------------  
Go to: Playlist -> Create  
  
Create a playlist injecting javascript code:  
  
<img src=x onerror=alert(1)>  
  
The XSS is executed, in the victim browser.  
  
V. BUSINESS IMPACT  
-------------------------  
An attacker can execute arbitrary HTML or script code in a targeted user's  
browser, this can leverage to steal sensitive information as user  
credentials, personal data, etc.  
  
VI. SYSTEMS AFFECTED  
-------------------------  
Kodi <= 17.6  
  
VII. SOLUTION  
-------------------------  
Vendor include the fix:  
https://trac.kodi.tv/ticket/17814  
  
VIII. REFERENCES  
-------------------------  
https://kodi.tv/  
  
IX. CREDITS  
-------------------------  
This vulnerability has been discovered and reported  
by Manuel Garcia Cardenas (advidsec (at) gmail (dot) com).  
  
X. REVISION HISTORY  
-------------------------  
March 19, 2018 1: Initial release  
April 16, 2018 2: Last revision  
  
XI. DISCLOSURE TIMELINE  
-------------------------  
March 19, 2018 1: Vulnerability acquired by Manuel Garcia Cardenas  
March 19, 2018 2: Send to vendor  
March 30, 2018 3: Vendo fix  
April 16, 2018 4: Sent to lists  
  
XII. LEGAL NOTICES  
-------------------------  
The information contained within this advisory is supplied "as-is" with no  
warranties or guarantees of fitness of use or otherwise.  
  
XIII. ABOUT  
-------------------------  
Manuel Garcia Cardenas  
Pentester  
  
  
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