[CVE-2013-6234] XSS File Upload in SpagoBI v4.0

Type securityvulns
Reporter Securityvulns
Modified 2014-05-05T00:00:00


  1. Advisory Information

Title: XSS File Upload Date published: 2014-03-01 Date of last update: 2014-03-01 Vendors contacted: Engineering Group Discovered by: Christian Catalano Severity: Medium

  1. Vulnerability Information

CVE reference: CVE-2013-6234 CVSS v2 Base Score: 4 CVSS v2 Vector: (AV:N/AC:L/Au:S/C:N/I:P/A:N) Component/s: SpagoBI Class: Input Manipulation

  1. Introduction

SpagoBI[1] is an Open Source Business Intelligence suite, belonging to the free/open source SpagoWorld initiative, founded and supported by Engineering Group[2]. It offers a large range of analytical functions, a highly functional semantic layer often absent in other open source platforms and projects, and a respectable set of advanced data visualization features including geospatial analytics. [3]SpagoBI is released under the Mozilla Public License, allowing its commercial use. SpagoBI is hosted on OW2 Forge[4] managed by OW2 Consortium, an independent open-source software community.

[1] - http://www.spagobi.org [2] - http://www.eng.it [3] - http://www.spagoworld.org/xwiki/bin/view/SpagoBI/PressRoom?id=SpagoBI-ForresterWave-July2012 [4] - http://forge.ow2.org/projects/spagobi

  1. Vulnerability Description

SpagoBI contains a flaw that may allow a remote attacker to execute arbitrary code. This flaw exists because the application does not restrict uploading for specific file types from Worksheet designer function. This may allow a remote attacker to upload arbitrary files (e.g. .html for XSS) that would execute arbitrary script code in a user's browser within the trust relationship between their browser and the server or more easily conduct more serious attacks.

  1. Technical Description / Proof of Concept Code

An attacker (a SpagoBI malicious user with a restricted account) can upload a file from Worksheet designer function.

To reproduce the vulnerability follow the provided information and steps below:

  • Using a browser log on to SpagoBI with restricted account (e.g. Business User Account)
  • Go on: Worksheet designer function
  • Click on: Image and Choose image
  • Upload malicious file and save it

XSS Malicious File Upload Attack has been successfully completed!

More details about SpagoBI Worksheet Engine and Worksheet designer http://wiki.spagobi.org/xwiki/bin/view/spagobi_server/Worksheet#HWorksheetoverview

(e.g. Malicious File: xss.html)

<!DOCTYPE html> <html> <head> <script> function myFunction() {alert("XSS");} </script> </head> <body> <input type="button" onclick="myFunction()" value="Show alert box"> </body> </html>

  1. Business Impact

Exploitation of the vulnerability requires low privileged application user account but low or medium user interaction. Successful exploitation of the vulnerability results in session hijacking, client-side phishing, client-side external redirects or malware loads and client-side manipulation of the vulnerable module context.

  1. Systems Affected

This vulnerability was tested against: SpagoBI 4.0 Older versions are probably affected too, but they were not checked.

  1. Vendor Information, Solutions and Workarounds

This issue is fixed in SpagoBI v4.1, which can be downloaded from: http://forge.ow2.org/project/showfiles.php?group_id=204

Fixed by vendor [verified]

  1. Credits

This vulnerability has been discovered by: Christian Catalano aka wastasy ch(dot)catalano(at)gmail(dot)com

  1. Vulnerability History

October 09th, 2013: Vulnerability identification October 22th, 2013: Vendor notification to [SpagoBI Team] November 05th, 2013: Vendor Response/Feedback from [SpagoBI Team] December 16th, 2013: Vendor Fix/Patch [SpagoBI Team] January 16th, 2014: Fix/Patch Verified March 01st, 2014: Vulnerability disclosure

  1. Disclaimer

The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. I accept no responsibility for any damage caused by the use or misuse of this information.