BitRaider Streaming Client 1.3.3.4098 – Local Privilege Escalation
BitRaider Streaming Client 1.3.3.4098 Local Privilege Escalation Vulnerability Vendor: BitRaider, LLC Product web page: http://www.bitraider.com Affected version: 1.3.3.4098 Summary: BitRaider is a video game streaming and download service. Desc: BitRaider contains a flaw that leads to unauthorized privileges being gained. The issue is due to the program granting improper permissions with the 'F' flag for the 'Users' group, which makes the entire 'BitRaider' directory and its sub directories and files world-writable. This may allow a local attacker to change an executable file with a binary file and gain elevated privileges. List of executables affected: o====================================================================================================o | Binary/location | Description | | | | |=============================================================== ====================================| | C:\ProgramData\BitRaider\BRSptStub.exe | BitRaider Support Stub | |---------------------------------------------------------------|------------------------------------| | C:\ProgramData\BitRaider\common\BRException.exe | BitRaider Exception Handler | |---------------------------------------------------------------|------------------------------------| | C:\ProgramData\BitRaider\common\brwc.exe | BitRaider Distribution Web Client | |---------------------------------------------------------------|------------------------------------| | C:\ProgramData\BitRaider\support\1.3.3\E02B25FC\BRSptSvc.exe | BitRaider Support Service Core | o====================================================================================================o Tested on: Microsoft Windows 7 Professional SP1 (EN) Vulnerability discovered by Gjoko 'LiquidWorm' Krstic @zeroscience Advisory ID: ZSL-2014-5217 Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2014-5217.php 17.12.2014 ---- C:\Users\user>sc qc BRSptStub [SC] QueryServiceConfig SUCCESS SERVICE_NAME: BRSptStub TYPE : 10 WIN32_OWN_PROCESS START_TYPE : 3 DEMAND_START ERROR_CONTROL : 0 IGNORE BINARY_PATH_NAME : "C:\ProgramData\BitRaider\BRSptStub.exe" LOAD_ORDER_GROUP : TAG : 0 DISPLAY_NAME : BitRaider Mini-Support Service Stub Loader DEPENDENCIES : SERVICE_START_NAME : LocalSystem C:\Users\user>icacls "C:\ProgramData\BitRaider\BRSptStub.exe" C:\ProgramData\BitRaider\BRSptStub.exe BUILTIN\Users:(F) <-------------------------- NT AUTHORITY\SYSTEM:(F) NT AUTHORITY\Authenticated Users:(F) <------- BUILTIN\Administrators:(F) NT AUTHORITY\INTERACTIVE:(F) <--------------- NT AUTHORITY\SERVICE:(F) BUILTIN\Guests:(RX) BUILTIN\Users:(I)(F) <----------------------- NT AUTHORITY\SYSTEM:(I)(F) NT AUTHORITY\Authenticated Users:(I)(F) <---- BUILTIN\Administrators:(I)(F) NT AUTHORITY\INTERACTIVE:(I)(F) <------------ NT AUTHORITY\SERVICE:(I)(F) BUILTIN\Guests:(I)(RX) Successfully processed 1 files; Failed processing 0 files C:\Users\user> |