AppXSvc Hard Link Privilege Escalation
Description
There exists a privilege escalation vulnerability for Windows 10 builds prior to build 17763. Due to the AppXSvc's improper handling of hard links, a user can gain full privileges over a SYSTEM-owned file. The user can then utilize the new file to execute code as SYSTEM. This module employs a technique using the Diagnostics Hub Standard Collector Service (DiagHub) which was discovered by James Forshaw to load and execute a DLL as SYSTEM.
Author(s)
- Nabeel Ahmed
- James Forshaw
- Shelby Pace
Platform
Windows
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/appxsvc_hard_link_privesc
msf exploit(appxsvc_hard_link_privesc) > show targets
...targets...
msf exploit(appxsvc_hard_link_privesc) > set TARGET < target-id >
msf exploit(appxsvc_hard_link_privesc) > show options
...show and set options...
msf exploit(appxsvc_hard_link_privesc) > exploit
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