module
Windows Server 2012 SrClient DLL hijacking
Disclosed |
---|
Feb 19, 2021 |
Disclosed
Feb 19, 2021
Description
All editions of Windows Server 2012 (but not 2012 R2) are vulnerable to DLL
hijacking due to the way TiWorker.exe will try to call the non-existent
`SrClient.dll` file when Windows Update checks for updates. This issue can be
leveraged for privilege escalation if %PATH% includes directories that are
writable by low-privileged users. The attack can be triggered by any
low-privileged user and does not require a system reboot.
This module has been successfully tested on Windows Server 2012 (x64).
hijacking due to the way TiWorker.exe will try to call the non-existent
`SrClient.dll` file when Windows Update checks for updates. This issue can be
leveraged for privilege escalation if %PATH% includes directories that are
writable by low-privileged users. The attack can be triggered by any
low-privileged user and does not require a system reboot.
This module has been successfully tested on Windows Server 2012 (x64).

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