module
Microsoft Windows ALPC Task Scheduler Local Privilege Elevation
| Disclosed |
|---|
| Aug 27, 2018 |
Disclosed
Aug 27, 2018
Description
On vulnerable versions of Windows the alpc endpoint method SchRpcSetSecurity implemented
by the task scheduler service can be used to write arbitrary DACLs to `.job` files located
in `c:\windows\tasks` because the scheduler does not use impersonation when checking this
location. Since users can create files in the `c:\windows\tasks` folder, a hardlink can be
created to a file the user has read access to. After creating a hardlink, the vulnerability
can be triggered to set the DACL on the linked file.
WARNING:
The PrintConfig.dll (%windir%\system32\driverstor\filerepository\prnms003*) on the target host
will be overwritten when the exploit runs.
This module has been tested against Windows 10 Pro x64.
by the task scheduler service can be used to write arbitrary DACLs to `.job` files located
in `c:\windows\tasks` because the scheduler does not use impersonation when checking this
location. Since users can create files in the `c:\windows\tasks` folder, a hardlink can be
created to a file the user has read access to. After creating a hardlink, the vulnerability
can be triggered to set the DACL on the linked file.
WARNING:
The PrintConfig.dll (%windir%\system32\driverstor\filerepository\prnms003*) on the target host
will be overwritten when the exploit runs.
This module has been tested against Windows 10 Pro x64.
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.