Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Splashtop | Mirroring360 Receiver | < 2.4.0.1 |
| Splashtop | Mirroring360 Sender | < 1.3.0.0 |
| Splashtop | Splashtop | < 3.5.6.0 |
| Splashtop | Splashtop For Rmm | < 3.5.8.0 |
| Splashtop | Streamer | < 3.5.6.0 |
| Microsoft | Windows | - |
Related Weaknesses (CWE)
References
- https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2023/MNDT-2023Third Party Advisory
- https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2023/MNDT-2023Third Party Advisory
FAQ
What is CVE-2023-3181?
CVE-2023-3181 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 f...
How severe is CVE-2023-3181?
CVE-2023-3181 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-3181?
Check the references section above for vendor advisories and patch information. Affected products include: Splashtop Mirroring360 Receiver, Splashtop Mirroring360 Sender, Splashtop Splashtop, Splashtop Splashtop For Rmm, Splashtop Streamer.