Electronic Arts Origin Client 9.5.5 Privilege Escalation

2015-02-27T00:00:00
ID PACKETSTORM:130568
Type packetstorm
Reporter LiquidWorm
Modified 2015-02-27T00:00:00

Description

                                        
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Electronic Arts Origin Client 9.5.5 Multiple Privilege Escalation Vulnerabilities  
  
  
Vendor: Electronic Arts Inc.  
Product web page: https://www.origin.com  
Affected version: 9.5.5.2850 (353317)  
9.5.3.636 (350385)  
9.5.2.2829 (348065)  
  
Summary: Origin (formerly EA Download Manager (EADM)) is digital distribution  
software from Electronic Arts that allows users to purchase games on the internet  
for PC and mobile platforms, and download them with the Origin client (formerly  
EA Download Manager, EA Downloader and EA Link).  
  
Desc#1: The application is vulnerable to an elevation of privileges vulnerability  
which can be used by a simple user that can change the executable file with a  
binary of choice. The vulnerability exist due to the improper permissions,  
with the 'F' flag (full) for the 'Everyone' and 'Users' group, for the  
'OriginClientService.exe' binary file, and for all the files in the 'Origin'  
directory. The service is installed by default to start on system boot with  
LocalSystem privileges. Attackers can replace the binary with their rootkit,  
and on reboot they get SYSTEM privileges.  
  
Desc#2: Origin client service also suffers from an unquoted search path issue  
impacting the 'Origin Client Service' service for Windows deployed as part of  
the Origin Thin Setup bundle. This could potentially allow an authorized but  
non-privileged local user to execute arbitrary code with elevated privileges  
on the system. A successful attempt would require the local user to be able to  
insert their code in the system root path undetected by the OS or other security  
applications where it could potentially be executed during application startup  
or reboot. If successful, the local user’s code would execute with the elevated  
privileges of the application.  
  
Tested on: Microsoft Windows 7 Professional SP1 (EN)  
Microsoft Windows 7 Ultimate SP1 (EN)  
  
  
Vulnerabilities discovered by Gjoko 'LiquidWorm' Krstic  
@zeroscience  
  
  
Advisory ID: ZSL-2015-5231  
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2015-5231.php  
  
  
14.12.2014  
  
  
  
**************************************************************************  
C:\>sc qc "Origin Client Service"  
[SC] QueryServiceConfig SUCCESS  
  
SERVICE_NAME: Origin Client Service  
TYPE : 10 WIN32_OWN_PROCESS  
START_TYPE : 3 DEMAND_START  
ERROR_CONTROL : 1 NORMAL  
BINARY_PATH_NAME : C:\Program Files (x86)\Origin\OriginClientService.exe <-----< Unquoted path  
LOAD_ORDER_GROUP :  
TAG : 0  
DISPLAY_NAME : Origin Client Service  
DEPENDENCIES :  
SERVICE_START_NAME : LocalSystem  
  
C:\>cacls "C:\Program Files (x86)\Origin\OriginClientService.exe"  
c:\Program Files (x86)\Origin\OriginClientService.exe Everyone:(ID)F <-----< Full control  
BUILTIN\Users:(ID)F <-----< Full control  
NT AUTHORITY\SYSTEM:(ID)F  
BUILTIN\Administrators:(ID)F  
  
  
C:\>  
**************************************************************************  
  
**************************************************************************  
C:\>cscript XCACLS.vbs "C:\Program Files (x86)\Origin\*.exe"  
Microsoft (R) Windows Script Host Version 5.8  
Copyright (C) Microsoft Corporation. All rights reserved.  
  
Starting XCACLS.VBS (Version: 5.2) Script at 15.12.2014 19:46:41  
  
Startup directory:  
"C:\"  
  
Arguments Used:  
Filename = "C:\Program Files (x86)\Origin\*.exe"  
  
  
  
**************************************************************************  
File: C:\Program Files (x86)\Origin\EAProxyInstaller.exe  
  
Permissions:  
Type Username Permissions Inheritance  
  
Allowed \Everyone Full Control This Folder Only  
Allowed BUILTIN\Users Full Control This Folder Only  
Allowed NT AUTHORITY\SYSTEM Full Control This Folder Only  
Allowed BUILTIN\Administrators Full Control This Folder Only  
  
No Auditing set  
  
Owner: BUILTIN\Administrators  
**************************************************************************  
  
**************************************************************************  
File: C:\Program Files (x86)\Origin\igoproxy64.exe  
  
Permissions:  
Type Username Permissions Inheritance  
  
Allowed \Everyone Full Control This Folder Only  
Allowed BUILTIN\Users Full Control This Folder Only  
Allowed NT AUTHORITY\SYSTEM Full Control This Folder Only  
Allowed BUILTIN\Administrators Full Control This Folder Only  
  
No Auditing set  
  
Owner: BUILTIN\Administrators  
**************************************************************************  
  
**************************************************************************  
File: C:\Program Files (x86)\Origin\Origin.exe  
  
Permissions:  
Type Username Permissions Inheritance  
  
Allowed \Everyone Full Control This Folder Only  
Allowed BUILTIN\Users Full Control This Folder Only  
Allowed NT AUTHORITY\SYSTEM Full Control This Folder Only  
Allowed BUILTIN\Administrators Full Control This Folder Only  
  
No Auditing set  
  
Owner: BUILTIN\Administrators  
**************************************************************************  
  
**************************************************************************  
File: C:\Program Files (x86)\Origin\OriginClientService.exe  
  
Permissions:  
Type Username Permissions Inheritance  
  
Allowed \Everyone Full Control This Folder Only  
Allowed BUILTIN\Users Full Control This Folder Only  
Allowed NT AUTHORITY\SYSTEM Full Control This Folder Only  
Allowed BUILTIN\Administrators Full Control This Folder Only  
  
No Auditing set  
  
Owner: BUILTIN\Administrators  
**************************************************************************  
  
**************************************************************************  
File: C:\Program Files (x86)\Origin\OriginCrashReporter.exe  
  
Permissions:  
Type Username Permissions Inheritance  
  
Allowed \Everyone Full Control This Folder Only  
Allowed BUILTIN\Users Full Control This Folder Only  
Allowed NT AUTHORITY\SYSTEM Full Control This Folder Only  
Allowed BUILTIN\Administrators Full Control This Folder Only  
  
No Auditing set  
  
Owner: BUILTIN\Administrators  
**************************************************************************  
  
**************************************************************************  
File: C:\Program Files (x86)\Origin\OriginER.exe  
  
Permissions:  
Type Username Permissions Inheritance  
  
Allowed \Everyone Full Control This Folder Only  
Allowed BUILTIN\Users Full Control This Folder Only  
Allowed NT AUTHORITY\SYSTEM Full Control This Folder Only  
Allowed BUILTIN\Administrators Full Control This Folder Only  
  
No Auditing set  
  
Owner: BUILTIN\Administrators  
**************************************************************************  
  
**************************************************************************  
File: C:\Program Files (x86)\Origin\OriginUninstall.exe  
  
Permissions:  
Type Username Permissions Inheritance  
  
Allowed \Everyone Full Control This Folder Only  
Allowed BUILTIN\Users Full Control This Folder Only  
Allowed NT AUTHORITY\SYSTEM Full Control This Folder Only  
Allowed BUILTIN\Administrators Full Control This Folder Only  
  
No Auditing set  
  
Owner: BUILTIN\Administrators  
**************************************************************************  
  
  
Operation Complete  
Elapsed Time: 0,1796875 seconds.  
  
Ending Script at 15.12.2014 19:46:41  
  
  
  
C:\>  
**************************************************************************  
  
--  
  
**************************************************************************  
Changed permissions and service binary path name (vendor fix):  
--------------------------------------------------------------  
  
C:\>sc qc "Origin Client Service"  
[SC] QueryServiceConfig SUCCESS  
  
SERVICE_NAME: Origin Client Service  
TYPE : 10 WIN32_OWN_PROCESS  
START_TYPE : 3 DEMAND_START  
ERROR_CONTROL : 1 NORMAL  
BINARY_PATH_NAME : "C:\Program Files (x86)\Origin\OriginClientService.exe" <-----< Quoted path  
LOAD_ORDER_GROUP :  
TAG : 0  
DISPLAY_NAME : Origin Client Service  
DEPENDENCIES :  
SERVICE_START_NAME : LocalSystem  
  
C:\>icacls "C:\Program Files (x86)\Origin\OriginClientService.exe"  
C:\Program Files (x86)\Origin\OriginClientService.exe NT AUTHORITY\SYSTEM:(I)(F)  
BUILTIN\Administrators:(I)(F)  
BUILTIN\Users:(I)(RX) <-----< Read and execute  
  
Successfully processed 1 files; Failed processing 0 files  
  
C:\>  
**************************************************************************  
`