The C:\Program Files (x86)\Splashtop\Splashtop Software Updater\uninst.exe process creates a folder at C:\Windows\Temp~nsu.tmp and copies…
Google·CWE-379·Published 2024-01-25
The C:\Program Files (x86)\Splashtop\Splashtop Software Updater\uninst.exe process creates a folder at C:\Windows\Temp~nsu.tmp and copies itself to it as Au_.exe. The C:\Windows\Temp~nsu.tmp\Au_.exe file is automatically launched as SYSTEM when the system reboots or when a standard user runs an MSI repair using Splashtop Streamer’s Windows Installer. Since the C:\Windows\Temp~nsu.tmp folder inherits permissions from C:\Windows\Temp and Au_.exe is susceptible to DLL hijacking, standard users can write a malicious DLL to it and elevate their privileges.
The C:\Program Files (x86)\Splashtop\Splashtop Software Updater\uninst.exe process creates a folder at C:\Windows\Temp~nsu.tmp and copies itself to it as Au_.exe. The C:\Windows\Temp~nsu.tmp\Au_.exe file is automatically launched as SYSTEM when the system reboots or when a standard user runs an MSI repair using Splashtop Streamer’s Windows Installer. Since the C:\Windows\Temp~nsu.tmp folder inherits permissions from C:\Windows\Temp and Au_.exe is susceptible to DLL hijacking, standard users can write a malicious DLL to it and elevate their privileges.
El proceso C:\Program Files (x86)\Splashtop\Splashtop Software Updater\uninst.exe crea una carpeta en C:\Windows\Temp~nsu.tmp y se copia en ella como Au_.exe. El archivo C:\Windows\Temp~nsu.tmp\Au_.exe se inicia automáticamente como SISTEMA cuando el sistema se reinicia o cuando un usuario estándar ejecuta una reparación de MSI utilizando el instalador de Windows de Splashtop Streamer. Dado que la carpeta C:\Windows\Temp~nsu.tmp hereda permisos de C:\Windows\Temp y Au_.exe es susceptible al secuestro de DLL, los usuarios estándar pueden escribirle una DLL maliciosa y elevar sus privilegios.
| Version | Type | Source | Base | Exp | Impact | Vector |
|---|---|---|---|---|---|---|
| 3.1 | Primary | NVD | 7.8 | 1.8 | 5.9 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | Primary | cve.org | 7.8 | — | — | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | Secondary | NVD | 7.8 | 1.8 | 5.9 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |