SpagoBI 4.0 Privilege Escalation

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01. ### Advisory Information ###  
  
Title: Remote Privilege Escalation in SpagoBI  
Date published: 2013-02-28  
Date of last update: 2013-02-28  
Vendors contacted: Engineering Group  
Discovered by: Christian Catalano  
Severity: High  
  
  
02. ### Vulnerability Information ###  
  
CVE reference: CVE-2013-6231  
CVSS v2 Base Score: 9  
CVSS v2 Vector: (AV:N/AC:L/Au:S/C:C/I:C/A:C)  
Component/s: SpagoBI  
Class: Input Manipulation  
  
  
03. ### 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  
  
  
04. ### Vulnerability Description ###  
  
SpagoBI contains a flaw that leads to unauthorized privileges being   
gained. The issue is triggered when the servlet (action):   
AdapterHTTP?ACTION_NAME=MANAGE_USER_ACTION is executed with specifically   
crafted input, and may allow a remote attacker to gain Administrator   
role privileges.  
  
  
05. ### Technical Description / Proof of Concept Code ###  
  
An attacker (a SpagoBI malicious Business User with RSM role ) can   
invoke via URL the servlet (action):  
  
AdapterHTTP?ACTION_NAME=MANAGE_USER_ACTION  
  
to gain SpagoBI Administrator privilege.  
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)  
  
- Execute:  
https://localhost/SpagoBI/servlet/AdapterHTTP?ACTION_NAME=MANAGE_USER_ACTION  
  
- Select your account from Users List  
  
- Select Administrator Role from Roles tab and save it  
  
Remote Privilege Escalation Attack has been successfully completed!  
  
  
06. ### Business Impact ###  
  
Successful exploitation of the vulnerability may allow a remote,   
authenticated attacker to elevate privileges and obtain full access to   
the affected system.  
The attacker could exploit the vulnerability to become administrator   
and retrieve or publish any kind of data.  
  
  
07. ### Systems Affected ###  
  
This vulnerability was tested against: SpagoBI 4.0  
Older versions are probably affected too, but they were not checked.  
  
  
08. ### 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]  
  
  
09. ### Credits ###  
  
This vulnerability has been discovered by:  
Christian Catalano aka wastasy ch(dot)catalano(at)gmail(dot)com  
  
  
10. ### Vulnerability History ###  
  
October 08th, 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  
February 28th, 2014: Vulnerability disclosure  
  
  
11. ### 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.  
  
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