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Background Intelligent Transfer Service Arbitrary File Move Privilege Elevation Vulnerability

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Background Intelligent Transfer Service Arbitrary File Move Privilege Elevation Vulnerability

Disclosed
03/10/2020
Created
06/11/2020

Description

This module exploits CVE-2020-0787, an arbitrary file move vulnerability in outdated versions of the Background Intelligent Transfer Service (BITS), to overwrite C:\Windows\System32\WindowsCoreDeviceInfo.dll with a malicious DLL containing the attacker's payload. To achieve code execution as the SYSTEM user, the Update Session Orchestrator service is then started, which will result in the malicious WindowsCoreDeviceInfo.dll being run with SYSTEM privileges due to a DLL hijacking issue within the Update Session Orchestrator Service. Note that presently this module only works on Windows 10 and Windows Server 2016 and later as the Update Session Orchestrator Service was only introduced in Windows 10. Note that only Windows 10 has been tested, so your mileage may vary on Windows Server 2016 and later.

Author(s)

  • itm4n
  • gwillcox-r7

Platform

Windows

Architectures

x86, x64

Development

Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':

msf > use exploit/windows/local/cve_2020_0787_bits_arbitrary_file_move
msf exploit(cve_2020_0787_bits_arbitrary_file_move) > show targets
    ...targets...
msf exploit(cve_2020_0787_bits_arbitrary_file_move) > set TARGET < target-id >
msf exploit(cve_2020_0787_bits_arbitrary_file_move) > show options
    ...show and set options...
msf exploit(cve_2020_0787_bits_arbitrary_file_move) > exploit

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